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aleksandr82 [10.1K]
3 years ago
11

Density is given in ____. a. Pa/cm3 c. g/s2 b. N/m2 d. g/cm3 Please select the best answer from the choices provided A B C D

Chemistry
2 answers:
Ray Of Light [21]3 years ago
7 0
Density is given in Mass/Volume so the answer is D
serg [7]3 years ago
7 0
Indeed Density (d) is in fact given in
g \div {cm}^{3}
Answer [D].

Since density (d) is a measurement of a substance's mass per volume, or d = m/v, we can see that units would be in g, kg, etc for mass and mL, L, etc for volume. And then where does
{cm}^{3}
come from?? Well 1 mL of water occupies a cylindrical space of 1 cubic cm.
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Look at the questions below and decide which is declarative.
Yuliya22 [10]
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3 years ago
What is the percent yield if 107.50 g NH3 reacts with excess O2 according to the
Maksim231197 [3]

Answer:

81.59%

Explanation:

  • 4NH₃ + 5O₂ → 4NO + 6H₂O

First we <u>convert 107.50 g of NH₃ into moles</u>, using its <em>molar mass</em>:

  • 107.50 g NH₃ ÷ 17 g/mol = 6.32 mol NH₃

Now we <u>calculate how many moles of NO would have been formed by the complete reaction of 6.32 moles of NH₃</u>:

  • 6.32 mol NH₃ * \frac{4molNO}{4molNH_3} = 6.32 mol NO

Then we <u>convert 6.32 moles of NO to grams</u>, using its <em>molar mass</em>:

  • 6.32 mol NO * 30 g/mol = 189.60 g NO

Finally we <u>calculate the percent yield</u>:

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8 0
3 years ago
How many moles of gold atoms do 4.05×1024 gold atoms constitute?
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6 0
3 years ago
Which statement applies to electronegativity?
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<u>Answer:</u> The correct answer is Option A.

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This property increases as we move from left to right across a period because the number of charge on the nucleus gets increased and electrons are attracted more towards the nucleus.

This property decreases as we move from top to bottom in a group because the electrons get add up in the new shells which make them further away from the nucleus.

Thus, the correct answer is Option A.

7 0
2 years ago
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