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ki77a [65]
3 years ago
6

Perform the following calculations and express the answer with the proper significant

Chemistry
2 answers:
Romashka [77]3 years ago
8 0

Answer:

The answer is

210.6+14.57=225.17mm.

Anuta_ua [19.1K]3 years ago
8 0

Answer:

Explanation:

0.15 MG +1.15 MG +2.051 MG

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Do x-rays travel slower than infrared
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No, x-rays do not travel slower than infrared radiation or even the opposite. Both are travelling in vacuum therefore they travel at same speed. They differ in the frequency of the electromagnetic waves.
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The pressure of 6.00 L of gas increases from 1.50 atm to 2.00 atm. What is the final volume of the gas, assuming constant temper
xeze [42]

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first we need to convert everything in SI units

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3 years ago
The "air bags" that are currently installed in automobiles to prevent injuries in the event of a crash are equipped with sodium
stellarik [79]

Answer:

0.0177 L of nitrogen will be produced

Explanation:

The decomposition reaction of sodium azide will be:

2NaN_{3}(s)--->2Na(s)+3N_{2}(g)

As per the balanced equation two moles of sodium azide will give three moles of nitrogen gas

The molecular weight of sodium azide = 65 g/mol

The mass of sodium azide used = 100 g

The moles of sodium azide used = \frac{mass}{molarmass}=\frac{100}{65}=1.54mol

so 1.54 moles of sodium azide will give = \frac{3X1.54}{2}=2.31mol

the volume will be calculated using ideal gas equation

PV=nRT

Where

P = Pressure = 1.00 atm

V = ?

n = moles = 2.31 mol

R = 0.0821 L atm / mol K

T = 25 °C = 298.15 K

Volume = \frac{P}{nRT}=\frac{1}{2.31X0.0821X298.15}=0.0177L

3 0
3 years ago
The density of aluminium is 2830 Kg/M^3. what is the density of aluminum in g/cm^3?​
postnew [5]
<h3>Answer:</h3>

2.83 g/cm³

<h3>Explanation:</h3>
  • Density of a substance is the ratio of mass of the substance to its volume.

Therefore;

  • Density is given by dividing mass of a substance by its volume.
  • It is measure in g/cubic centimeters or kg per cubic meters.

In this case;

Density of Al = 2830 Kg/m³

We are required to convert is to g/cm³

We use the relationship;

1 g/cm³ = 1000 kg/m³

Therefore;

= 2830 kg/m³ ÷ 1000 kg/m³

= 2.83 g/cm³

Hence, 2830 kg/m³ of Aluminium is equivalent to 2.83 g/cm³

4 0
3 years ago
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