BRAINLIEST PLUS 25 POINTS
The particles of a substance stay close together but slide past one another as they move. When thermal energy is removed from the substance, the particles are forced into fixed positions by their attraction to one another. What change in state has occurred?
A: Gas to solid
B: Liquid to solid
C: Gas to liquid
D: Solid to liquid

Answer:If you are sedentary (little or no exercise) : Calorie-Calculation = BMR x 1.2.

If you are lightly active (light exercise/sports 1-3 days/week) : Calorie-Calculation = BMR x 1.375.

Explanation:

In Period 3 and Group 16, Sulfur is present and has the element symbol is ''S''.

Sulfur is a chemical element having the symbol S and its atomic number 16 and belongs to group 16. It is abundant around the world and nonmetallic under normal conditions. Sulfur element is used in the vulcanization of black rubber such as a fungicide and black gunpowder. Most element of sulfur is used in the production of acid known as sulfuric acid, which is the most important chemical produced by civilizations of the west.

Element of sulfur is lowly toxic to people but ingesting too much sulfur may cause a burning effect or diarrhea. Breathing in sulfur dust can damage the airways or cause coughing. It can irritate to the skin and eyes of a person.

So we can conclude that Sulfur is the element that is located in Period 3 and Group 16.

Learn more about element here: https://brainly.com/question/11660396

#SPJ1

The statement the most abundant isotope of Hydrogen has a mass of 1 amu is wrong.

The average atomic mass could be obtained as the sum of the products of the percentage abundance of each of the hydrogen isotopes and the mass of the isotope.

We know that every element has isotopes. In every sample of the atom, there are various isotopes of the element. Thus the average atomic mass must take into account the masses of all these isotopes.

As such, the statement the most abundant isotope of Hydrogen has a mass of 1 amu is wrong.

Learn ore about atomic mass:https://brainly.com/question/17067547

#SPJ1

Explanation:

Functional groups containing nitrogen are amines and amides.

The general formula for amines is:

RNH₂, where R = longer hydrocarbon chain.

The general formula for amides is:

RCONH₂, where R = longer hydrocarbon chain.

See attached diagram for general structural formula.

To learn more about amines and amides:

https://brainly.com/question/30401860

Answer:

66 grams of ice would have to melt to lower the temperature of 352 mL of water from 15 °C to 0 °C.

Explanation:

To calculate the amount of ice that would have to melt to lower the temperature of 352 mL of water from 15 °C to 0 °C, we need to use the formula:

Q = m_water * c_water * ΔT_water + m_ice * Lf

where,
Q = the amount of heat transferred,
m_water = the mass of water, c_water is the specific heat capacity of water,
ΔT_water = the change in temperature of water, m_ice = the mass of ice,
Lf = the specific latent heat of fusion of ice.

First, let's calculate the amount of heat transferred to the water:

Q = m_water * c_water * ΔT_water
Q = 352 g * 1.0 cal/(g*°C) * (15-0) °C
Q = 5,280 cal

Next, we can use the specific latent heat of fusion of ice, which is 80 cal/g, to calculate the amount of heat required to melt the ice:

Q = m_ice * Lf
Q = m_ice * 80 cal/g
m_ice = Q / Lf
m_ice = 5,280 cal / 80 cal/g
m_ice = 66 g

Answer:

g = 9

Explanation:

5.22 = 2.61(g - 7)  ==> solve for g

5.22 / 2.61 = 2.61(g - 7) / 2.61  ==> divide both sides by 2.61 to isolate g

2 = g - 7  ==> simplify

9 = g  ==> add 7 on both sides

g = 9

Answer: 1 mol of carbonate to 2 mol of acid

Explanation:

To calculate the number of moles for given molarity, we use the equation:

\(\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution in ml}}\)  

a) \(\text{Moles of carbonate}=\frac{0.2moldm^{-3}\times 25cm^3}{1000}=0.005mol\)

b) \(\text{Moles of acid}=\frac{0.5moldm^{-3}\times 20cm^3}{1000}=0.01mol\)

Thus the mole ratio of carbonate to acid is = \(\frac{0.005}{0.01}=\frac{1}{2}\)

The heat in KG needed to warm up 1.25 pounds of ice from -5.00 Fahrenheit to 135 Fahrenheit specific heat for water 1.00 cal/g C is 347.1 kJ

First, we need to convert the given values to the metric system, which is the standard system for scientific calculations:

1.25 pounds = 0.567 kilograms (1 pound = 0.453592 kilograms)

-5.00 Fahrenheit = -20.56 Celsius (using the formula (°F - 32) x 5/9 = °C)

135 Fahrenheit = 57.22 Celsius

Next, we need to calculate the amount of heat required to warm up the ice from -20.56 °C to 0 °C (the melting point of ice) and then to warm up the resulting water from 0 °C to 57.22 °C:

Heating ice from -20.56 °C to 0 °C:

Heat required = mass x specific heat x

= 23,464.27 J

Melting ice to water at 0 °C:

Heat required = mass x heat of fusion of ice

Heat required = 0.567 kg x 334,000 J/kg

Heat required = 189,678 J

Heating water from 0 °C to 57.22 °C:

Heat required = mass x specific heat x temperature change

Heat required = 0.567 kg x 4.184 J/g°C x (57.22 - 0)

Heat required = 133,951.13 J

The total heat required to warm up 1.25 pounds of ice from -5.00 Fahrenheit to 135 Fahrenheit is the sum of the heat required in each step:

Total heat required = 23,464.27 J + 189,678 J + 133,951.13 J

Total heat required = 347,093.4 J

Finally, we can convert the result to kilojoules (kJ) by dividing by 1000:

Total heat required = 347.0934 kJ

Therefore, approximately 347.1 kJ of heat is needed to warm up 1.25 pounds of ice from -5.00 Fahrenheit to 135 Fahrenheit.

Learn more about heat below.

https://brainly.com/question/27991746

#SPJ1

Answer:

1. Because a Francium atom is deeper down the alkali metals, it is much easier to lose a valence electron.

2. A fluorine atom can easily gain a valence electron, but it could not easily lose a valence electron because it is one electron away from filling the outer shell

Explanation:

The answer is the explanation

The pH of the solution, determined by the hydrogen electrode coupled with the saturated calomel electrode, is approximately 9.53.

To find the pH of the solution using a hydrogen electrode coupled with a saturated calomel electrode, we can utilize the Nernst equation, which relates the measured cell potential to the concentration of hydrogen ions in the solution. The Nernst equation is given by:

E = E° - (0.0592/n) * log[H+]

Where E is the measured cell potential, E° is the standard cell potential, n is the number of electrons transferred in the half-reaction (which is 2 for the hydrogen electrode), and [H+] is the concentration of hydrogen ions.

In this case, the emf of the combined cell is given as 0.523 V. Since the saturated calomel electrode (SCE) is the reference electrode, we can consider its standard cell potential (E°) to be 0.241 V at 25 degrees Celsius.

0.523 V = 0.241 V - (0.0592/2) * log[H+]

Simplifying the equation:

0.523 V - 0.241 V = -0.0296 * log[H+]

0.282 V = -0.0296 * log[H+]

Dividing both sides by -0.0296:

log[H+] = -0.282 V / -0.0296

log[H+] ≈ 9.53

Taking the antilog (base 10) of both sides:

[H+] ≈ 10^9.53

[H+] ≈ 3.2 × 10^9 M

Therefore, the pH of the solution, determined by the hydrogen electrode coupled with the saturated calomel electrode, is approximately 9.53.

for more questions on pH

https://brainly.com/question/12609985
#SPJ8

Answer:

C

Explanation:

Warm water is heated by the Gulf Stream, a warm air current that originates in the Gulf of Mexico. As the warm water moves north, it forces cooler water to sink and move south.

the reason of which I do not believe it is a Rip Tide is because rip tides have been found in both several rivers and oceans, if not all.

They appear as the trait over a recessive allele. Statement C) is true about the dominant alleles.

Dominant alleles are genetic variants that, when present in an individual's genotype, are expressed phenotypically, meaning they determine the visible or observable traits. Dominant alleles are represented by capital letters, while recessive alleles are represented by lowercase letters in genetics.

In terms of inheritance, if an individual has at least one copy of the dominant allele, it will be expressed in the phenotype, regardless of the presence of a recessive allele. This is because dominant alleles exert their influence over recessive alleles, thus "dominating" their expression.

To illustrate this, let's consider a specific example using a trait controlled by a single gene with two possible alleles: dominant (A) and recessive (a). If an individual is homozygous dominant (AA), meaning they possess two copies of the dominant allele, the dominant trait will be expressed.

However, if an individual is homozygous recessive (aa), with two copies of the recessive allele, the recessive trait will be expressed since there are no dominant alleles to override it.

Therefore, dominant alleles appear as the trait over recessive alleles, regardless of the presence or absence of a recessive allele. The presence of even a single copy of the dominant allele is sufficient for its expression in the phenotype. Option C

For more such questions on  recessive allele visit:

https://brainly.com/question/16048928

#SPJ8

The volume of the liquid = 8.7 ml

Graduated cylinder is a laboratory tool used to measure the volume of liquid

Also called a measuring cylinder

Each line (marked line) on this cylinder shows a scale that shows the total volume of water.

The reading is based on a curve of the fluid formed called the meniscus. Read the measurement of the amount of fluid at the bottom of the meniscus (the position of our eyes is parallel to the level of the meniscus and the cylinder is located in a flat (not tilted) place

If we look at the picture (attached), the meniscus is located between the scale / line 8.6 and 8.8(interval 0.2 ml), so the volume of the liquid shows the number 8.7 ml

positron emission and electron capture both occur in specific radioactive decays and are associated with unstable nuclei. They play a crucial role in balancing the ratio of protons to neutrons in a nucleus, leading to more stable configurations.

Positrons and electrons are both subatomic particles with opposite charges. Positrons have a positive charge (+1), while electrons have a negative charge (-1). They have the same mass, which is approximately 9.1 x 10^-31 kilograms.

However, positrons and electrons differ in their origins. Positrons are the antiparticles of electrons, meaning they have the same mass but opposite charge. Positrons are typically produced in certain radioactive decays, while electrons are ubiquitous in atoms and play a fundamental role in chemical reactions.

Positron emission occurs when a proton inside an unstable nucleus is converted into a neutron, releasing a positron and a neutrino. This process reduces the atomic number by one while maintaining the mass number. The positron is ejected from the nucleus, carrying away the positive charge.

The positron can cause transmutations by colliding with an electron in the vicinity. The collision results in the annihilation of both particles, converting their masses into energy in the form of gamma rays. This annihilation process contributes to medical imaging techniques like PET scans.

Electron capture happens when an unstable nucleus captures an electron from its electron cloud. The captured electron combines with a proton in the nucleus, resulting in the formation of a neutron and a neutrino. This process also reduces the atomic number by one while preserving the mass number.

Electron capture causes transmutations by changing the composition of the nucleus. By capturing an electron, the number of protons decreases, transforming the element into another one with a lower atomic number.

Positron emissions and electron capture both result in the reduction of atomic number by one. However, positron emission involves the release of a positron from the nucleus, while electron capture involves the capture of an electron by the nucleus. The overall effect is the same—a decrease in atomic number.

Furthermore, positron emission and electron capture both occur in specific radioactive decays and are associated with unstable nuclei. They play a crucial role in balancing the ratio of protons to neutrons in a nucleus, leading to more stable configurations.

For more question on protons

https://brainly.com/question/1481324

#SPJ8

Answer:

c

Explanation:

CI or O

Carla Vista Company has the following information available for September 2020.

Unit selling price of video game consoles $410

Unit variable costs $328

Total fixed costs $36,900

Units sold 600

Compute the unit contribution margin.

Unit contribution margin enter the unit contribution margin

Prepare a CVP income statement that shows both total and per unit amounts.

Compute Carla Vista’ break-even point in units.

Break-even point in units enter Break-even point in units units

Prepare a CVP income statement for the break-even point that shows both total and per unit amounts.

The more metallic element  pair is Cl or O. Therefore, option C is correct.

Except for hydrogen, which is a nonmetal, the elements are arranged in a triangle with the metals to the left, the nonmetals to the right, and the metalloids to the immediate right of the triangle.

Metal atoms are bound together by metallic bonds to form solids known as metallic solids. Metal solids include things like copper, gold, and zinc, for instance. Since cesium is the last naturally occurring alkali metal, it has the most metallic characteristics.

The non-metal components, like as rock and rubbish, are subsequently removed from the ore during processing. The subsequent melting and combining of various metal components yields metal alloys. A solid metal alloy substance is produced when the freshly combined metal compound has cooled.

Thus, option C is correct.

To learn more about metallic element, follow the link;

https://brainly.com/question/24309770

#SPJ2

Answer:

D

Explanation:

i learned this in elementary

Answer:

rsghkm vumm

Explanation:

el correo de confirmación con la que se ha enviado desde correo ok recibido gracias saludos María del Ca

Answer:

K2SO4, NH3, HOCI, HCI, CH3NH2,  SiCl4, CO2, CH20

Explanation:

Substances are soluble in water when they are ionic or polar covalent substances.

If we look at the substances listed, K2SO4 is ionic while  NH3, HOCI, HCI, CH3NH2,  SiCl4, CO2, CH20 all contain polar covalent bonds which accounts for their water solubility.

Hence ionic and polar covalent substances are soluble in a polar solvent such as water.

Answer:

B

Explanation:

Answer:

One of the organelles in eukaryotic cells that carry out digestion and waste removal.

Answer:

It's X

Explanation:

Taking into account the Brønsted-Lowry acid-base theory, the conjugate acid of HCO₂⁻ is H₂CO₂.

The Brønsted-Lowry acid-base theory (or the Brønsted-Lowry theory) identifies acids and bases based on whether the species accepts or donates protons or H⁺.

According to this theory, acids are proton donors while bases are proton acceptors. That is, an acid is a species that donates an H⁺ proton while a base is a chemical species that accepts an H⁺ proton from the acid.

So, reactions between acids and bases are H⁺ proton transfer reactions.

Then, a conjugate base is an ion or molecule resulting from the acid that loses the proton, while a conjugate acid is an ion or molecule resulting from the base that gains the proton:

acid + base ⇄ conjugate base + conjugate acid

Like a conjugate acid is an ion or molecule resulting from the base that gains the proton, the conjugate acid of HCO₂⁻ is H₂CO₂.

Learn more about the Brønsted-Lowry acid-base theory:

brainly.com/question/12916250?referrer=searchResults

brainly.com/question/1191429?referrer=searchResults

brainly.com/question/4000152?referrer=searchResults

brainly.com/question/12808135?referrer=searchResults

Answer: [Ne] 3s² 3p³

Answer:

Waning Crescent

Explanation:

Hope iT Help

Brainliest please

Answer:

Zero

Explanation:

Hello,

The question require us to calculate the mass of nitrogen present in aluminium carbonate.

This can easily be calculated using Avogadro's number as a constant with some minor calculations but however in this case, we can't because there's no single atom of nitrogen present in aluminium carbonate hence we can't calculate the mass of nitrogen present in it.

Chemical formula of aluminium carbonate = Al₂(CO₃)₃.

From the above chemical formula, we can see that there's no single atom of nitrogen present in the formula hence the mass of nitrogen present in aluminium carbonate that contains 1.23×10²³ carbon atoms is zero.

Answer: calcium is metal and carbon and oxygen is non metal. If you place the chalk in the water there won’t be any chemical reaction

Explanation: Hope my answer is helpful

We use the formula to determine how much heat is needed to warm a substance: m * c * deltaT = q

where q represents the amount of heat in calories, m represents the substance's mass in grammes, c represents its specific heat in calories per gram-degree Celsius, and deltaT represents the temperature change in degrees Celsius.

In this instance, we get:

m = 89.7 g

Initial temperature (which is not supplied to us) - deltaT = 44.1 °C

The specific heat of water is 1 calorie/gram-degree Celsius, albeit c changes depending on the item being heated.

As a result, by applying the formula, we can determine how much heat is needed to warm the substance:

q = (44.1 °C - starting temperature) * (1 calorie/gram-degree Celsius) * (89.7 g)

Without having knowledge of the initial temperature, we cannot fully answer the equation. On the basis of the equation, we can make certain observations, though.

A substance's bulk and the temperature change have a direct relationship with the quantity of heat needed to warm it. This implies that the quantity of heat needed to warm the substance grows as either of these variables increases.

In addition, compared to other materials, water has a comparatively high specific heat, which means that in contrast to other materials, a relatively big quantity of heat is required to raise the temperature of water by a given amount.

In conclusion, without knowledge of the initial temperature, we are unable to calculate the required amount of heat. The specific heat of water is quite high, however the amount of heat needed will depend on the mass of the substance and the temperature change.

For more such question on calories

https://brainly.com/question/11844409

#SPJ11

An airplane flew 3043 km from Houston to Seattle in 5.5 hours. What was the average speed, in m/s rounded to the nearest hundredth, of the airplane from Houston to Seattle?

The answer is 553

Answer:

553

Explanation:i did this question today and it was right!

Answer:

State Function: A system will be said to have a state function when its properties are independent of the path followed to carry out the state and it is fixated on a particular state.

Examples of state function are Pressure, Temperature, Mass, Volume & all the thermodynamics quantity (H, G, A, U, S).

A quantity which depends on the path followed is known as a path function. In thermodynamics, there are only two path functions: work and heat.

Exact differential: The differential of a state function for an infinitesimally small change in its property is called an exact differential.

Mathematically say phi is a function of x and y,

\( \phi \: = f(x, y)\)

The overall change in phi i.e. dΦ will be,

\(d \phi \: = ( \frac{∂ \phi}{∂x})_ydx + ( \frac{∂ \phi}{∂y})_xdy\)

let,

\(( \frac{ ∂\phi}{∂x})_y = m,( \frac{∂ \phi}{∂y})_x = n\)

if Φ is a state function of x and y then,

\(( \frac{ ∂m}{∂y})_x =( \frac{ ∂n}{∂x})_y\)

Cross reciprocality theorem.

substituting the value of m & n,

\([\frac{ ∂}{∂y}( \frac{ ∂\phi}{∂x})_y]_x =[ \frac{ ∂}{∂x}( \frac{ ∂\phi}{∂y})_x]_y\)

Simplifying,

\( \frac{ {∂}^{2} \phi }{∂y \cdot ∂x} = \frac{ {∂}^{2} \phi }{∂x \cdot ∂y}\)

\(\sf \small \pink{Thanks }\: \green{for} \: \blue{joining} \: \orange{brainly } \: \red{community}!\)