3 years ago

Medical diagnosis and what are common uses of radioactive elements in health care?

Chemistry

1 answer:

Tomtit [17]3 years ago

8 0

Answer:

nuclear medicine

Explanation:

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A gas occupies a volume of 1.00 L at 25.0°C. What volume will the gas occupy at 1.00 x10^2 °C?

Leno4ka [110]

Answer : The volume of gas occupy at $1.00\times 10^2^oC$ is, 1.25 L

Explanation :

Charles' Law : It states that volume of the gas is directly proportional to the temperature of the gas at constant pressure and number of moles.

Mathematically,

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where,

$V_1\text{ and }T_1$ are the initial volume and temperature of the gas.

$V_2\text{ and }T_2$ are the final volume and temperature of the gas.

We are given:

$V_1=1.00L\\T_1=25.0^oC=(25.0+273)K=298K\\V_2=?\\T_2=1.00\times 10^2^oC=((1.00\times 10^2)+273)K=373K$

Putting values in above equation, we get:

$\frac{1.00L}{298K}=\frac{V_2}{373K}\\\\V_2=1.25L$

Therefore, the volume of gas occupy at $1.00\times 10^2^oC$ is, 1.25 L

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3 years ago

Which statement is correct with respect to gross primary productivity

bezimeni [28]

Gross primary production and net primary production. Gross primary production is the amount of chemical energy as biomass that primary producers create in a given length of time.

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3 years ago

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Yes, of course))))))

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Use the chemical reaction: 2Mg + O2 > 2MgO to answer the question below.

Arturiano [62]

10 mols of MgO will form

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how many moles of sodium are present in a sample of sodium having a mass of 137 g? (molar mass is 23.0g)

vivado [14]

Answer:

5.95 moles

Explanation:

No of moles = given mass / molar mass

No of moles = 137/23

= 5.95 moles

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3 years ago