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Pie
3 years ago
6

Give the number of significant figures in this number: 40.00

Chemistry
2 answers:
erica [24]3 years ago
5 0

Answer:

4

Explanation:

because the follow digits are part of the answer even though they are following a decimal

Tatiana [17]3 years ago
4 0

A significant figure is every symbol that made the number itself.

In this case, the number 40.00 has four figures but only two of them are significant 40, this is because you haven't got any more decimals than the first zero.

If you have a case with zeros in front, you take to the first non zero digits.

For example, 0.071004 you wold express as 0.071 and those 7, and 1 are the significant ones.

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Determine the volume of 3.30 mol of a gas at 25°C and 0.995 atm.
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Answer:

V = 81.14 L

Explanation:

Given data:

Volume of gas = ?

Number of moles = 3.30 mol

Temperature of gas = 25°C

Pressure of gas = 0.995 atm

Solution:

The given problem will be solve by using general gas equation,

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T = temperature in kelvin

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