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3 years ago

A. List three things that your body strives to keep constant. (example metabolism)

Chemistry

1 answer:

Triss [41]3 years ago

6 0

b would be the best none of the rest make any sense.

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Suppose two 200.0-L tanks are to be filled separately with the gases helium and hydrogen. What mass of each gas is needed to pro

Aneli [31]

Answer:

Mass of helium = 4426.9524 g

Mass of hydrogen gas = 2213.4762 g

Explanation:

Pressure = 135 atm

Temperature = 24 °C

Volume = 200 L

Number of moles = ?

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15

So,

T₁ = (24 + 273.15) K = 297.15 K

Using ideal gas equation as:

PV=nRT

where,

P is the pressure

V is the volume

n is the number of moles

T is the temperature

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

135 atm × 200 L = n × 0.0821 L.atm/K.mol × 297.15 K

⇒n = 1106.7381 moles

For helium gas:

Molar mass = 4 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$1106.7381= \frac{Mass}{4}$

$Mass= 4426.9524\ g$

For hydrogen gas:

Molar mass = 2 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$1106.7381= \frac{Mass}{2}$

$Mass= 2213.4762\ g$

4 0

4 years ago

Complete and balance the equation for this single-displacement reaction. Phases are optional. Li+NaOH-->

sdas [7]

The complete and balanced equation for this single-displacement reaction would be written as follows:

Li+NaOH--> LiOH + Na

In this reaction, lithium replace sodium in the compound sodium hydroxide forming lithium hydroxide and sodium metal as products. Hope this answers the question.

6 0

4 years ago

Read 2 more answers

In relation to the reactants of a chemical reaction, the products are

Sav [38]

In a chemical reaction, the products should always be equal to the reactants (in this case you would answer “the same as the reactants”) since we can neither create nor destroy matter (law of conservation!)

Hope this helps! :)

8 0

3 years ago

Read 2 more answers

_____ is the most abundant gas in th Earths atmosphere?

ollegr [7]

The answer to the question would be B since Nitrogen is the most abundant gas in our atmosphere

5 0

3 years ago

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Help asap for brainlist

-Dominant- [34]

Answer: