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goldenfox [79]
4 years ago
7

What is a source of energy that is internal to the

Chemistry
1 answer:
MA_775_DIABLO [31]4 years ago
3 0

Answer:

Sun

Explanation:

The earth originates from the sun.

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According to the kinetic-molecular theory, what is one way the three states of matter are all similar?
Delicious77 [7]

The kinetic molecular theory of matter states that:

1. Matter is made up of particles that are constantly moving.

2. A change in phase may occur when the energy of the particles is changed.

3. All particles have energy, but the energy varies depending on the temperature the sample of matter is in. This in turn determines whether the substance exists in the solid, liquid, or gaseous state.

6 0
2 years ago
2. A sample of table sugar (sucrose, C12H22O11) has a mass of 1.202 g.
Snezhnost [94]

Explanation:

Given mass of sugar = 1.202 g

Molar mass of the sugar , C_{12}H_{22}O_{11} = 342.29 g/mol

a) Number of moles of sugar

\text{number of moles}=\frac{\text{given mass of sugar}}{\text{molar mass of sugar}}=\frac{1.202 g}{342.29g/mol}=0.0035 mol

Number of moles of sugar in 1.202 grams is 0.0035 moles

b)Moles of each element in C_{12}H_{22}O_{11}

In a molecular formula of sugar there are 12 carbon, 22 hydrogen and 11 oxygen atoms

Moles of an element in molecule =

number of atoms of that element in a molecular formula × number of moles of compound

Moles of carbon = 12 × 0.0035 = 0.042 moles

Similarly

Moles of hydrogen = 22  × 0.0035 = 0.077 moles

Moles of oxygen =11 × 0.0035 = 0.0385 moles

c) Number of atoms of each type in C_{12}H_{22}O_{11}

\text{Number of atoms}=\text{number of moles of that atom in a molecular formula}\times \text{Avogadro number}

Number of carbon atoms =0.042 mole\times 6.022 \times 10^{23}=2.52\times 10^{22} atoms

Number of hydrogen =0.077mole\times 6.022 \times 10^{23}=4.63\times 10^{22} atoms

Number of oxygen atoms = 0.0385 mole\times 6.022 \times 10^{23}=2.31\times 10^{22} atoms

7 0
3 years ago
Read 2 more answers
The empirical formula for two compounds that have very different properties (one tastes very sour and the other very sweet) is c
DiKsa [7]

I believe that the choices for this question are:

C2H4O2, C4H8O4 <span>
CH2O, C6H12O6 
C3H6O3, C6H12O6 
C2H4O2, C6H12O6 </span>

 

The answer to this based on the molar masses given is:

C2H4O2, C6H12O6 

 

To prove calculate the molar mass:

C2H4O2 = 2*12 + 4*1 + 2*16 = 60

C6H12O6 = 6*12 + 12*1 + 6*16 = 180

3 0
3 years ago
Read 2 more answers
31) give an example of one renewable and one non renewable resource. be sure to state which is renewable and which is nonrenewab
Yakvenalex [24]
31) A renewable resource is qualified as things like, Solar, Wind, Hydro-electric, and thermal.
A non-renewable source can be like coal, trees, Gasoline (oil), and petroleum.

32) I don't know what you mean, sorry.

33) Convection Currents cause the plates to move, sometime these currents cause the plates to collide, therefore creating an ... EARTHQUAKE.
5 0
4 years ago
Which method of separation would be most appropriate for separating a mixture of water and alcohol?(1 point)
Gelneren [198K]

Answer:

fractional distillation  is the correct answer

Explanation:

make me brainlist

8 0
2 years ago
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