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2 years ago

N2 (g) + __ H2 (g) --> _NH3 When the reaction above is completely

Chemistry

1 answer:

Advocard [28]2 years ago

7 0

Answer:

Explanation:

left side has 2 N so right side must have a 2 which means 6 H on right side so to get 6 on left you have a coef. of 3 to make 6 H

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You determine the volume of your plastic bag (simulated human stomach) is 1.08 L. How many grams of NaHCO3 (s) are required to f

dsp73

Answer:

3.636 grams of sodium bicarbonate is required.

Explanation:

Using ideal gas equation:

PV = nRT

where,

P = Pressure of gas = 753.5 mmHg = 0.9914 atm

( $1 atm = 760 mmHg$ )

V = Volume of gas = 1.08 L

n = number of moles of gas = ?

R = Gas constant = 0.0821 L.atm/mol.K

T = Temperature of gas = 24.5 °C= 297.65 K

Putting values in above equation, we get:

$(0.9914 atm)\times 1.08 L=n\times (0.0821L.atm/mol.K)\times 297.65K\\\\n=0.0438 mole$

Percentage recovery of carbon dioxide gas = 49.4%

Actual moles of carbon dioxide formed: 49.4% of 0.0438 mole

$\frac{49.4}{100}\times 0.0438 mol=0.02164 mol$

$2NaHCO_3\righarrow Na_2CO_3+H_2O+CO_2$

According to reaction ,1 mol is obtained from 2 moles of sodium bicarbonate.

Then 0.02164 moles f carbon dioxide will be obtained from:

$\frac{2}{1}\times 0.02164 mol=0.04328 mol$

Mass of 0.04328 moles pf sodium bicarbonate:

0.04328 mol × 84 g/mol = 3.636 g

3.636 grams of sodium bicarbonate is required.

5 0

3 years ago

what gas was given off when hydrogen peroxide is broken down? recall that the formula for hydrogen peroxide is h2o2?

Anna35 [415]

When hydrogen peroxide is broken down the gas released or given off is Oxygen.

5 0

3 years ago

An object that has a height of 0.4 meter is placed at a distance of 0.7 meter from a concave spherical mirror. An image is forme

julia-pushkina [17]

Answer: B. 0.6125 m

For spherical concave mirror:

Height of the object, $h_o=0.4\hspace{1mm}m$

Height of the image, $h_i=0.35\hspace{1mm}m$

Object distance, u=-0.7 m

we need to find the distance of the image, v.

These are related by the following formula:

$\frac{h_i}{h_o}=-\frac{v}{u}\\ \Rightarrow v=u\times\frac{h_i}{h_o}$

Insert the values:

$v=-(-0.7\times\frac{0.35}{0.4})=0.6125\hspace{1mm}m$

Hence, option B is the correct.

8 0

3 years ago

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Put the moon phases in order from first to last phase.

ivolga24 [154]

It is b or a check with someone else

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3 years ago

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What amount of energy is required to change a spherical drop of water with a diameter of 1.60 mm to five smaller spherical drops

Elan Coil [88]

72.0 ok hope this helps

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3 years ago