4. Which location (a, b, or c) would have the highest temperature?
5. Which location(a, b, or c) would have the lowest temperature?
6. Give reasoning to explain how and why the latitude of a place on Earth affects its average temperature.

answer fast worth 100 POINTS AND WILL MARK BRAINLEST

Answer:

the molar mass of mgo is 40.3

Answer:

A. 10 km/h

its the answer.......................................

Answer:

They have different DNA and different physical appearance

Explanation:

Because if the sperms fertilize two different eggs the DNA will be different too and if the sperms are different the physical appearance will be different also

Answer:

drowsiness

Explanation:

Considering the reaction stoichiometry, the mass of H₂O that is produced when 11.9 moles of HNO₃ react is 107.1 grams.

The balanced reaction is:

3 Cu + 8 HNO₃ → 3 Cu(NO₃)₂ + 2 NO + 4 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:  

The molar mass of the compounds present in the reaction is:

Then, by reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of mass of each compound participate in the reaction:  

Cu: 3 moles ×63.54 g/mole= 190.62 grams

HNO₃: 8 moles ×63 g/mole= 504 grams

Cu(NO₃)₂: 3 moles ×187.54 g/mole= 562.62 grams

NO: 2 moles ×30 g/mole= 60 grams

H₂O: 4 moles ×18 g/mole= 72 grams

It is possible to determine the the amount of mass of H₂O produced by a rule of three: if by stoichiometry 8 moles of HNO₃ produce 72 grams of H₂O, if 11.9 moles of HNO₃ react how much mass of H₂O will be formed?

[tex]mass of H_{2}O=\frac{11.9 moles of HNO_{3} x72 grams of H_{2}O}{8 moles of HNO_{3}}[/tex]

mass of H₂O= 107.1 grams

In summary, the mass of H₂O that is produced when 11.9 moles of HNO₃ react is 107.1 grams.

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Answer:

Melting- The process by which a substance changes from its solid state to its liquid state.

evaporation- turning liquid into vapor.

Freezing- The process by which a substance changes from its liquid state into its solid state.

condensation- water which collects as droplets on a cold surface when humid air is in contact with it

sublimation- a solid deposit of a substance which has sublimed.

Explanation:

What is the empirical formula for ribose (C5H10O5)?

C. CH20

Answer:

Pressure and volume

Answer:

Rule 1. The element with the lower group number is written first in the name; the element with the higher group number is written second in the name. Exception: when the compound contains oxygen and a halogen, the name of the halogen is the first word in the name.

Explanation:

When naming binary covalent compounds, the element listed first will be the one that is lower in group number.

Covalent compounds versus ionic compounds are the two groups into which chemical compounds are often divided. Ionic compounds are composed of atoms or molecules that have gained or lost electrons, causing them to become electrically charged.

Covalent or molecular compounds often emerge from the interaction of two nonmetals. By sharing electrons, the elements combine to create a compound, producing and electrically neutral molecule. When naming binary covalent compounds, the element listed first will be the one that is lower in group number.

Therefore, when naming binary covalent compounds, the element listed first will be the one that is lower in group number.

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[tex]\\ \tt\hookrightarrow 4NH_3+3O_2\longrightarrow 2NO+6H_2O[/tex]

#1

We can solve through ammonia or oxygen .Lets go through ammonia

Moles of Ammonia

[tex]\\ \tt\hookrightarrow \dfrac{12}{17}=0.7mol[/tex]

Moles of NO

[tex]\\ \tt\hookrightarrow 0.7(0.5)=0.35mol[/tex]

Mass of NO

#2

NH_3 is excess reagent and O_2 is limiting reagent .

#3

We need ∆n

Answer: Fe3(PO4)2

Explanation:

If this helps give me brainliest please

Answer:

This is what we're given:

P (pressure), which is 1.95 atm

V(volume), which is 11.30 L.

n(number of moles), which is 0.554 moles of helium gas.

We have to find T, or temperature. To do this, we'll need to use the Ideal Gas Law, which is:

[tex]PV = nRT[/tex]

Rearranging this equation to get temperature on one side, we get:\\ [tex]T =\frac{PV}{nR}\\ \\

Pressure \: is \: in \: atm \: and \\ volume \: is \: in \: L . \: This \: tells \\ \: us \: that \: we'll \: need \: to \: \\ use \: the \: value \: of \: 0.08206 L atm/K \: mol \: for \: R \: the \: ideal \: gas \: constant.\\ \\ Plugging in all of the values, we can solve for temperature:

[tex]T =\frac{PV}{nR}\\ \\

T = (1.95 atm × 12.30 L) ÷

(0.654 mol × 0.0820575LatmK−1)

mol

[tex]T =\frac{PV}{nR} \\ \\

T =

\frac{ (1.95 atm × 12.30 L)}{(0.654 mol × 0.0820575LatmK−1)} [/tex]

[tex]T = 447 K [/tex]

Boyle’s Law (PV law)

a. Volume of a GIVEN MASS OF GAS (mass is fixed) is inversely proportional to the Absolute pressure of the gas at constant Temperature.

b. Absolute pressure means pressure that is measured relative to Vacuum. Vacuum = 0 pressure. Thus, absolute pressure is measured relative to absolute 0.

c. Another way : PV = Constant. Thus, if you measure the Pressure and Volume at 3 different times, then P1 V1 = P2 V2 = P3 V3. In order to keep the product as a constant, whenever Pressure increases, the Volume will decrease.

Charle’s Law (VT Law)

a. Volume of a GIVEN MASS OF GAS (mass is fixed) is directly proportional to the Absolute Temperature at constant pressure.

b. When you measure the Temperature of a body on a scale in which 0 corresponds to Absolute 0, then the measured temperature is Absolute Temperature. Put simply, this refers to the Kelvin scale.

c. Absolute 0 is the temperature at which objects are at their lowest possible energy (Since Temperature is a measurement of the Kinetic energy of the atoms).

Gay Lussac Law (PT Law)

a. Pressure of a GIVEN AMOUNT OF MASS (mass is fixed) at constant volume is directly proportional to the absolute Temperature (that is, Kelvin Temperature).

b. Another way : P / T = Constant. P1 / T1 = P2 / T2 = P3 / T3.

Avogadro’s law (Vn law)

a. All the above laws were talking about relationships at fixed mass. So we needed a law which would relate mass with other quantities. This is Avogadro’s law.

b. It is a very straight forward law, if the amount of gas in a Container increases (that is, if the amount of matter increases), then the Volume of the gas increases which is very straight forward.

c. Volume is directly proportional to n (number of moles) or V/n = Constant.

Considering the Ideal Gas Law, at 485.05 °K 0.554 moles of helium gas will occupy 11.30 liters at 1.95 atmospheres.

On the other side, the 4 gas laws are Gay Lussac's law, Boyle's law, Charles' Law and Avogadro's law.

Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:

P×V = n×R×T

where:

In this case, you know:

Replacing in the Ideal Gas Law:

1.95 atm×11.30 L = 0.554 moles× 0.082 [tex]\frac{atm L}{mol K}[/tex]× T

Solving:

T= (1.95 atm×11.30 L) ÷ (0.554 moles× 0.082 [tex]\frac{atm L}{mol K}[/tex])  

T= 485.05 K

Finally, at 485.05 °K 0.554 moles of helium gas will occupy 11.30 liters at 1.95 atmospheres.

Gay Lussac's law states that the pressure of the gas is directly proportional to its temperature: when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, gas pressure decreases.

Boyle's law says that volume is inversely proportional to pressure: if pressure increases, volume decreases; while if the pressure decreases, the volume increases.

Charles' Law that the volume is directly proportional to the temperature of the gas: if the temperature increases, the volume of the gas increases; while if the temperature of the gas decreases, the volume decreases.

Avogadro's law states that the volume is directly proportional to the amount of gas: if the amount of gas increases, the volume will increase, while if the amount of gas decreases, the volume will decrease.

In summary, the 4 gas laws are Gay Lussac's law, Boyle's law, Charles' Law and Avogadro's law.

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Taking into account the reaction stoichiometry and ideal gas law, 0.48144 grams of KClO₃ was decomposed.

In first place, the balanced reaction is:

2 KClO₃  → 2 KCl + 3 O₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:

P×V = n×R×T

where:

165 mL of oxygen is produced at 30.0 °C and 90.0 kPa. This is, you know:

Replacing in the ideal gas law:

0.888231 atm× 0.165 L = n× 0.082 [tex]\frac{atmL}{molK}[/tex]× 303 K

Solving:

n= (0.888231 atm× 0.165 L)÷ (0.082 [tex]\frac{atmL}{molK}[/tex]× 303 K)

n= 0.0059 moles

Finally, 0.0059 moles of oxygen is produced at 30 °C and 90 kPa.

The following rule of three can be applied: If by stoichiometry of the reaction 3 moles of O₂ are produced by 244.8 grams of KClO₃, 0.0059 moles of O₂ are produced by how much mass of KClO₃?

[tex]mass of KClO_{3}= \frac{0.0059 moles of O_{2}x 244.8 grams of KClO_{3}}{3 moles of O_{2}}[/tex]

mass of KClO₃= 0.48144 grams

Finally, 0.48144 grams of KClO₃ was decomposed.

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the reaction stoichiometry:

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ideal gas law:

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Gas is a state of matter that have loosely moving particles. The closeness of the gas and intermolecular forces deviates from the ideal equation.

The gas consists of particles that may be too close resulting in lowering the speed that let intermolecular forces become significant at low-temperature and high pressure.

The intermolecular forces present in the gases differs from obeying the ideal gas conditions and contradicting the ideal gas rule of no collision and inter-molecular attraction with other gases.

Therefore, option A. intermolecular forces and option C. closeness of the particles are the reasons for the deviation.

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Answer:

answer in  picture

Explanation:

Answer:

A is the answer

Explanation:

Just guessing.

The error source is metals were heated to 100 degrees celsius, they were cooled before water addition, a thermometer was not submerged properly, and the calorimeter was not sealed properly.

To raise the temperature by one degree of the one gram substance the heat required is called specific heat.  The heat given by the system gets absorbed by the surrounding environment.

As the calorimeter was not sealed properly the heat from the system got escaped to the outer environment and the metals of the experiment were not heated till the specific temperature required.

The heat got transferred from the hotter to the cooler environment even before water addition. While taking the readings for the experiment the thermometer was not completely dipped and the values of the specific heat differed.

Therefore, errors during the measuring and estimation vary the calculation.

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A combination of two or more elements or compound combine each other is called as molecules.

.

.

.

Gud mrng sis

[tex]\huge\fbox{Answer ☘}[/tex]

Chemists use the mole unit to represent 6.022 × 10 23 things, whether the things are atoms of elements or molecules of compounds. This number, called Avogadro's number, is important because this number of atoms or molecules has the same mass in grams as one atom or molecule has in atomic mass units.

hope helpful~

Answer:

the answer is liquid.

Explanation:

The pair of elements which are non-metals and at the same time; gases at room temperature and normal atmospheric pressure are as follows:

N2, O2, He, Ar

An element is a substance which cannot be split into simpler units by any ordinary process.

Some few examples of elements include:

Hydrogen

Helium

Lithium

Beryllium

Boron

Carbon

Nitrogen

Oxygen

Fluorine

Learn more about elements:

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Answer:

5.399772727e22 atoms/particles or 5.39 x 10^22 atoms/particles

Explanation:

so to convert you’re going to convert grams to moles and moles to atoms/particles:

grams to moles:

23g CF4 x 1 mol

———— = 0.26136 mol

88g (molar mass of CF4)

moles to atoms/particles:

[2.066 • 10^23 is avogadro's number and is always used to convert to atoms/particles]

0.26136 mol x 2.066 • 10^23

———————

1 mol

this gives you 5.399772727e22 atoms/particles

so 5.399772727e22 atoms/particles or 5.39 x 10^22 atoms/particles for scientific notation

hope this helps :)

The mass of an atom of the second bromine isotope is 80.9amu

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Now given that

Plugging in values, we have that

79.9= (50.3×78.9)+(49.7× ?) /100

79.9x 100= (50.3×78.9)+(49.7× ?) /100

7990= 3968.7+(49.7x)

7990- 3968.7=49.7x

4021.3= 49.7x

x=4021.3/49.7

x=80.9amu

Therefore, the  mass of an atom of the second bromine isotope is 80.9amu.

See related question on finding mass of an isotope here: https://brainly.com/question/19533439

Answer:

its b i remember learning this

Explanation:

The law which this student is thinking of is the law of conservation of mass (LOCOM).

LOCOM is an abbreviation for the law of conservation of mass and it states that mass is neither created nor destroyed in any chemical reaction.

This ultimately implies that, the mass of any substance in a balanced chemical equation or chemical reaction would remain the same at the end.

According to the law of conservation of mass (LOCOM), the mass of all the reacting chemical elements of any substance must be equal (remain the same) to the mass of the product formed during a chemical reaction.

Read more on LOCOM here: https://brainly.com/question/24783543

Answer:

The person above me is correct

Explanation:

have a wonderful day!

Atoms are the smallest division of the element. The potassium atoms present in the 235 gm of the compound is [tex]2.57 \times 10^{24}[/tex] atoms.

Given,

Calculate the number of moles as:

[tex]\begin{aligned}\rm Moles (n) &= \dfrac{\rm mass}{\rm molar\;\rm mass}\\\\&= \dfrac{235}{110.26}\\\\&=2.13\;\rm mol\end{aligned}[/tex]

In the given compound [tex]\rm K_{2}S[/tex], there are two atoms of potassium and one atom of sulphur.

If, 1 mole = [tex]2 \times 6.022 \times 10^{23}[/tex] atoms of potassium

Then, 2.13 moles = X atoms

Solving for X:

[tex]2.13 \times 2 \times 6.022 \times 10^{23} = 2.57 \times 10^{24}[/tex]

Therefore, option c. [tex]2.57 \times 10^{24}[/tex] is correct.

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The sun has more thermal energy than the bath tub full of hot water, because the sun has more heat than the bathe tub full of hot water.

The energy present in a system that determines its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is a whole field of physics that studies how heat is transmitted across various systems and how work is performed in the process.

The object with the higher temperature has more thermal energy with two things have the same mass. A thermometer is used to determine temperature. Heat is the thermal energy that is transferred between things when their temperatures differ.

Undoubtedly, a colder item can possess more thermal energy than a warmer one. Here's one illustration, Thermal energy will be far more in a bathtub full of 100°F water than in a thimble full of 110°F water.

Thus, The sun has more thermal energy than the bath tub full of hot water.

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Answer:

1. curious

2. curious

3. creative

4. Ethical

Explanation:

I am not sure but I hope they are correct! :)

Answer:

Curious.)
Andrew asks questions about how the volcanoes in Hawaii were formed.

Skeptical.)
Robyn sees a magazine for kids at the grocery store with an article about a new fossil discovery. So, she searches scientific journals that support the content of the article.

Creative.)

Maggie uses her knowledge of physics to create a simple machine for a science fair project.

Ethical.)

Shaun is testing a new medication on animal subjects. He is sure to follow all guidelines for appropriate care and testing.




Explanation:

Have a great rest of your day
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