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ryzh [129]
3 years ago
15

According to the Energy Information Administration (EIA), oil accounts for what percentage of the U.S. energy mix?

Chemistry
1 answer:
stich3 [128]3 years ago
7 0

Answer: answer is b 29%

Explanation:

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Elemental mercury combines with oxygen to make mercury oxide. write a balanced equation
Ilia_Sergeevich [38]
Hg + O2 --> HgO + O

Note that Mercury has a variable valency. 

6 0
3 years ago
A compound is known to consist solely of carbon, hydrogen, and chlorine. Through elemental
OleMash [197]

Answer:

the empirical (lowest raios) is

C2H4Cl    

Explanation:

A compound is known to consist solely of carbon, hydrogen, and chlorine. Through elemental analysis, it was determined that the compound is composed of 24.27% carbon.

What is the empirical formula of this compound?

the compound has ONLY C, H, and Cl

the % Cl  = 100% - 24.27% -4.03% = 71.7%

in 100 gm, there are 71.7 gm Cl, 24.27 gm C, and 4.03 gm H

the number of moles are Cl=71.7/70.91 =1.01= ~ 1

                                          C = 24.27/12.0 = 2.02 =~ 2

                                           H = 403/1.01 = 3.97 =~   4

so   the empirical (lowest raios) is

C2H4Cl      

                                 

                               

3 0
3 years ago
What new information can you add to your definition of physical change ?
Mamont248 [21]
Its reversible, soluble, <span>mass, density, color, boiling point, temperature, and volume. </span>
7 0
3 years ago
What is the molarity of a solution in which 7.1 g of sodium sulfate is dissolved in enough water to make 100. mL of solution?
Sidana [21]

Answer:

0.50 M

Explanation:

Given data

  • Mass of sodium sulfate (solute): 7.1 g
  • Volume of solution: 100 mL

Step 1: Calculate the moles of the solute

The molar mass of sodium sulfate is 142.04 g/mol. The moles corresponding to 7.1 grams of sodium sulfate are:

7.1g \times \frac{1mol}{142.02g} = 0.050mol

Step 2: Convert the volume of solution to liters

We will use the relation 1 L = 1000 mL.

100mL \times \frac{1L}{1000mL} =0.100L

Step 3: Calculate the molarity of the solution

M = \frac{moles\ of\ solute }{liters\ of\ solution} = \frac{0.050mol}{0.100L} =0.50 M

3 0
3 years ago
Read 2 more answers
An object can become electrically charged if it gains or loses which particles?
Sunny_sXe [5.5K]

Answer:

if it gains or loses neutrons

6 0
3 years ago
Read 2 more answers
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