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4 years ago

How many grams nh3 are equivalent to 9.3 x 1023 molecules nh3?

1 answer:

4 0

To solve this, we need the Avogadros number to convert to moles then multiply with molar mass to convert to mass in grams.

moles = 9.3 x 10^23 molecules * (1 mol / 6.022 x 10^23 molecules)

moles = 1.54 moles

Molar mass of NH3 is 17 g/mol:

mass = 1.54 moles * 17 g/mol

mass = 26.25 g

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If I have 0.725 moles of gas at a temperature of 105 K and a pressure of 3.75 atmospheres, what is the volume of the gas?

iVinArrow [24]

If I have 0.725 moles of gas at a temperature of 105 K and a pressure of 3.75 atmospheres the volume of the gas 1.66 litres.

Explanation:

Data given:

number of moles of the gas = 0.725

temperature = 105 K

pressure = 3.75 atm

volume of the gas =?

R = 0.08206 Latm/mole Kelvin

Applying the ideal gas law to calculate the volume of the given gas:

PV = nRT

rearranging the equation to calculate volume:

V = $\frac{nRT}{P}$

putting the values in the equation:

V = $\frac{0.08206 X 0.725 X 105}{3.75}$

V = 1.66 Litres.

At a temperature of 105 K and pressure of 3.75 atm, 0.725 moles of gas occupy 1.66 litres of volume.

6 0

3 years ago

Which of these statements about heating up land and water is true?

Oduvanchick [21]

Answer:

the land is heated through radiant energy,

Explanation:

7 0

2 years ago

Balance the equation: Ca + ....... H2O->Ca(OH)2 + H2

Mnenie [13.5K]

$\large\boxed{{Ca+ \bold{2}H_2O \to Ca(OH)_2+H_{2}}}$

7 0

4 years ago

How are different natural disasters related? What different causes and effects of natural disasters do you know about?

pantera1 [17]

Answer: The disasters are different according to their occurrence. For example, the causes of an earthquake cannot be the same as that of forest-fire. Natural disasters are caused due to different reasons like soil erosion, seismic activity, tectonic movements, air pressure, and ocean currents etc.

Explanation: Have a great day,

8 0

2 years ago

Read 2 more answers

According to the following reaction, how many grams of iron(II) chloride will be formed upon the complete reaction of 21.6 grams

velikii [3]

Answer:

37.58 g of FeCl₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

Fe + 2HCl —> FeCl₂ + H₂

Next, we shall determine the mass of HCl that reacted and the mass of FeCl₂ produced from the balanced equation. This is can be obtained as follow:

Molar mass of HCl = 1 + 35.5 = 36.5 g/mol

Mass of HCl from the balanced equation = 2 × 36.5 = 73 g

Molar mass of FeCl₂ = 56 + (2×35.5)

= 56 + 71

= 127 g/mol

Mass of FeCl₂ from the balanced equation = 1 × 127 = 127 g

SUMMARY:

From the balanced equation above,

73 g of HCl reacted to produced 127 g of FeCl₂.

Finally, we shall determine the mass of FeCl₂ produced by the reaction of 21.6 g of HCl. This can be obtained as follow:

From the balanced equation above,

73 g of HCl reacted to produced 127 g of FeCl₂.

Therefore, 21.6 g of HCl will react to produce = (21.6 × 127)/73 = 37.58 g of FeCl₂.

Thus, 37.58 g of FeCl₂ were obtained from the reaction.

4 0

3 years ago