What is the dropped down number in a chemical formula that tells the number of atoms of a particular element? *

Chemistry

2 answers:

SIZIF [17.4K]3 years ago

4 0

Answer:

Subscript

Explanation:

The subscript represents how many atoms ther are of that element.

densk [106]3 years ago

3 0

The lack of a number preceding the carbon symbol C and the compound formula CO2 shows that there is one carbon atom and one carbon dioxide molecule. Subscript numbers in chemical formulas represent the number of atoms or molecules immediately preceding the subscript.

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Sixty liters of a gas were collected over water when the barometer read 663 mmhg , and the temperature was 20∘c. what volume wou

lesya [120]

First, let's compute the number of moles in the system assuming ideal gas behavior.

PV = nRT
(663 mmHg)(1atm/760 mmHg)(60 L) = n(0.0821 L-atm/mol-K)(20+273 K)
Solving for n,
n = 2.176 moles

At standard conditions, the standard molar volume is 22.4 L/mol. Thus,

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3 0

4 years ago

Name 5 things that the periodic table includes about 1 atom for each element:

olganol [36]

Answer:

They are listed below

Explanation:

The 5 things that the periodic table includes are;

1. Name of the element

2. The symbol of the element

3. Atomic number of the element

4. Relative atomic mass