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horsena [70]
3 years ago
12

Which chemical equation shows that the total mass during a chemical reaction stays the same?

Chemistry
1 answer:
Nataliya [291]3 years ago
4 0
All chemical equations show that the total mass of the reaction stays the same.  
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What happens to the particles of a gas when the gas turns to a liquid
vovangra [49]
Pacticles of gas are more compact, but still have the ability to move.
6 0
3 years ago
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How many moles are present in 54.8 mL of mercury if the density of mercury is 13.6 g/mL?​
lesya692 [45]

Answer:

3.72 mol Hg

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
  • Density = Mass over Volume

Explanation:

<u>Step 1: Define</u>

D = 13.6 g/mL

54.8 mL Hg

<u>Step 2: Identify Conversions</u>

Molar Mass of Hg - 200.59 g/mol

<u>Step 3: Find</u>

13.6 g/mL = x g / 54.8 mL

x = 745.28 g Hg

<u>Step 4: Convert</u>

<u />745.28 \ g \ Hg(\frac{1 \ mol \ Hg}{200.59 \ g \ Hg} ) = 3.71544 mol Hg

<u>Step 5: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

3.71544 mol Hg ≈ 3.72 mol Hg

8 0
3 years ago
What is the function of tendons?
nika2105 [10]

Answer:

A tendon is a fibrous connective tissue that attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure.

Explanation:

3 0
2 years ago
If the mass of a cube with a length of 9.0 cm3 is 12.2 g what is its density
Anvisha [2.4K]

Answer:

The density is 1,35 g/cm3

Explanation:

We use the formula for calculate the density

δ =m/V =12,2g / 9,0 cm3=  1,35 g/cm3

7 0
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Does anybody know the answer if so explain
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Answer:

synthesis

Explanation:

I believe answer is d a synthesis reaction

5 0
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