how is a compound different from mixtures

Answer:

Amount of oxygen react with 48 g of magnesium = 32 gram

Explanation:

Given:

Amount of oxygen react with 4.8 g of magnesium = 3.2 g

Find:

Amount of oxygen react with 48 g of magnesium

Computation:

Using Law of equal proportion;

Amount of oxygen react with 48 g of magnesium = 48(3.2/4.8)

Amount of oxygen react with 48 g of magnesium = 32 gram

Answer:

Sodium (Na) has more protons than carbon (C).

hope that helps!

Answer:

Calories are used for physical activity.

Explanation:

Calories provide energy for consumers. You may notice when you drink or eat, you gain more energy. This is because calories are stored in our drinks and foods.

Answer:

They are

Explanation:

They are used to make people obese. The government uses calories to make people weak and unhealthy. For example, McDonalds is known to have many calories in their food. I hate the government.

Answer:

has 6 valence electrons as its in group 6

the atom will gain electrons

the charge will be 2- as it will gain 2 electrons to be a full configuration

Answer:

See explanation

Explanation:

A word equation refers to a representation of a chemical process using word rather than appropriate chemical formulae.

Hence, the word equation for photosynthesis is this;

six moles of carbon dioxide + six moles of water -----> one mole of glucose + six moles of oxygen gas

The equation with formulae is;

6CO2 + 6H20 -------> C6H1206 + 6O2

Balanced chemical equation with states;

6CO2(g) + 6H20(l) -------> C6H1206(s) + 6O2(g)

Answer:

Explanation:

1. Mercury’s atmosphere is incredibly thin.

It's thin because the atmosphere is made up of atoms blasted off its surface by the Solar wind and also consist of the stream particles coming from the outer layer of the sun

2. The length of a mercury year is about 1.5 times longer than a mercury a day.

Mercury revolves around the sun very quickly but rotates around its axis very very slowly

3.The temperature range on Mercury is about 590 °C.

During the day, temperatures on Mercury's surface can reach Very High But,  the planet has no atmosphere to retain that heat

Answer:

I'm not to sure I'll ask one of my frens to help

Answer:

Positive: Save fuel and reduces greenhouse gas

Negative: Harmful to human and animal health ( underwater animals), Hurts the food chain

Explanation:

I got it from a video. Hopefully it helps you.

Answer: 5 moles of NaF would be produced when 550 grams of Sodium bromide are used.

Explanation:

From the question, the balanced chemical formula is illustrated below:

2NaBr + CaF2 → 2NaF + CaBr2

From the equation above;

Molecular mass of NaBr = 23 + 80 = 103g/ mol

Molecular mass of CaF2= 40+ (19×2)= 78g/ mol

Molecular mass of NaF = 23+19 = 42g/ mol

From the balanced chemical equation;

2 moles of NaBr reacted with 1mole of CaF to give 2 moles of NaF.

That is, 2 moles of NaBr= 2× 103 = 206g

2moles of NaF = 2×42= 84g

If 206g of NaBr yielded 84g of NaF

Therefore 550g of NaBr will yield Xg of NaF

X= 550×84/206

X= 224.27g of NaF

But 42g = 1 mole of NaF

Therefore 224.27g = X mole of NaF

X= 224.27 ×1/42

X is approximately 5moles.

1 mole of carbon contains 6.02*(10^23) atoms of carbon

Answer:

c. c. c c c c c cçcc. ccccccccc

Explanation:

ccc cc

When solid converts to gas then heat is required to break the intermolecular forces of attraction between the particles. In this process heat increase but temperature remains the same. So option A is correct option.

Phase transition is a process in which transition takes place from one state to another of a medium on changing temperature or pressure.  Phase transition is a physical process as there is no breaking of old bond and forming of new bonds takes place.

During phase transition temperature remain constant as the extra heat that is given to the system that goes into breaking of  intermolecular forces of attraction between the particles. So overall temperature remains same but heat keeps on increasing. Hence option A is correct.

To learn more about phase transition, here:

https://brainly.com/question/3255181

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Answer:

a

Explanation:

a mixture is a material made up of two or more different substances which are not chemically combined. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

Answer:

A digram show mixture

Because mixture is formed by simple mixing of many substances

And figure A shows different substances

Explanation:

Answer:

The answer is in correct

Answer:

Explanation:

The term change of phase means the same thing as the term change of state. ... i.e. during phase change, the energy supplied is used only to separate the molecules ; no part of it is used to increase the kinetic energy of the molecules. So its temperature will not rise, since kinetic energy of molecules remains the same.

Answer:

1. C(2)+H2(1) -> C2H6(1)

2. NH3(2)+O2(3)-> HCN(2)+H2O(3)

I am not sure about the second one.

Answer: 2 moles

Explanation:

AM of Al 27

Answer: The empirical formula is [tex]MgSO_3[/tex]

Explanation:

Mass of Mg= 46.6 g

Mass of S= 61.4 g

Mass of O = 92.0 g

Step 1 : convert given masses into moles.

Moles of Mg =[tex]\frac{\text{ given mass of Mg}}{\text{ molar mass of Mg}}= \frac{46.6g}{24g/mole}=1.942moles[/tex]

Moles of S =[tex]\frac{\text{ given mass of S}}{\text{ molar mass of S}}= \frac{61.4g}{32g/mole}=1.918moles[/tex]

Moles of O =[tex]\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{92.0g}{16g/mole}=5.75moles[/tex]

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For Mg = [tex]\frac{1.942}{1.918}=[/tex]

For S= [tex]\frac{1.918}{1.918}=1[/tex]

For O =[tex]\frac{5.75}{1.918}=3[/tex]

The ratio of Mg: S: O = 1: 1: 3

Hence the empirical formula is [tex]MgSO_3[/tex]

Answer:

D

Explanation:

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Answer:

C. the ice cube and the glass of water have higher heat capacity than the swimming pool

Explanation:

In HCL, one positive atom is given to chlorine from hydrogen so that it can complete it's octate. chlorine take one electron from hydrogen.

In NaCl, Sodium takes one electron from chlorine to complete its orbit with eight electrons. Chlorine gives one electron to sodium.

Answer:

199.7mL

Explanation:

Using Charles law equation as follows:

V1/T1 = V2/T2

Where;

V1 = initial volume (mL)

T1 = initial temperature (°F)

V2 = final volume (mL)

T2 = final temperature (°F)

According to the information provided in this question, V1 = 135mL, V2 = ?, T1 = 67.6°F, T2 = 100°F

Using V1/T1 = V2/T2

135/67.6 = V2/100

Cross multiply

135 × 100 = 67.6 × V2

13500 = 67.6V2

V2 = 13500/67.6

V2 = 199.704

The new volume in the air in the helium ballon is 199.7mL.

Answer:

explain;

math

Answer:volume occupied by 40 grams of argon gas (Ar) at standard conditions = 22.443L

Explanation:

Using the ideal gas law that

PV =nRT  

Where p  =pressure,  

V = volume,  

n = number of moles  

R = gas constant, and  

T= temperature in Kelvin.

Since Argon is at STP( Standard conditions), This means that temperature is   273.15 K  and pressure is  1 atm

Also the  gas constant= 0.08206 L atm/K mol . we  are using this value because its  units match the units of our values to aid easy calculation

So,

Number of moles = Mass/ Molar mass

=40g/39.948 g/mol

Number of moles of Argon=1.0013moles.

Now Bringing

pV= nRT

V= nRT/p

=(1.0013mol x 0.08206 L atm/K mol x 273.15 K  ) /1atm

Volume =22.443L

Answer:

12cm^3

Explanation:

to find the volume you multiply each dimension

1x3x4=12

Answer:

Air in the atmosphere acts as a fluid. The sun's radiation strikes the ground, thus warming the rocks. As the rock's temperature rises due to conduction, heat energy is released into the atmosphere, forming a bubble of air which is warmer than the surrounding air. This bubble of air rises into the atmosphere.

Explanation:

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Answer: nitrogen

Explanation:

Answer:

I2 + 2S2O3^2- --------> S4O6^2- + 2I^-

Explanation:

The correct equation is;

2Na2S2O3 + I2 → Na2S4O6 + 2NaI

Oxidation half equation;

2S2O3^2- --------> S4O6^2- + 2e-

Reduction half equation;

I2 + 2e ----------> 2I^-

Overall balanced redox reaction equation;

I2 + 2S2O3^2- --------> S4O6^2- + 2I^-

Answer:

Streak

Explanation:

The streak of a mineral is the color of the powder produced when it is dragged across an un-weathered surface.