3- AR 385-63/MCO 3570.1C is used in conjunction with

1 answer:

8 0

AR 385-63/MCO 3570.1C is used in conjunction with DA PAM 385-63.
AR 385-63/MCO 3570.1C is the regulation or order which provides revised range safety policy for the Army and Marine Corps.
This order/regulation applies on the Active Army or the Army National Guard of the United states.

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Explanation:

A group of two or more smaller molecules is the correct answer

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What is the mass of 8.12 × 10^23 molecules of CO2 gas? (Atomic mass of carbon = 12.011 u; oxygen = 15.999 u.)

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Answer:

$m=59.3gCO_2$

Explanation:

Hello,

In this case, the first step is to compute the molar mass of carbon dioxide as shown below, considering it has one carbon atom and two oxygen atoms:

$M=12.011g/mol+2*15.999g/mol\\\\M=44.009g/mol$

It is important to notice it is the mass in one mole of such compound. Afterwards, we need to use the Avogadro's number to compute the how many moles are in the given molecules of carbon dioxide as shown below:

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$m=1.35mol*\frac{44.009g}{1mol} \\\\m=59.3gCO_2$

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What is the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen

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Carbon(C):
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=65.5/12
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Hydrogen(H):
number of moles=mass/molar mass (Mr)
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Oxygen (O):
number of moles = mass/molar mass (Mr)
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So,
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