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myrzilka [38]
4 years ago
5

Only 2 of them are correct.

Chemistry
1 answer:
Evgen [1.6K]4 years ago
4 0

Is B and C ...........
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Given a force of 88 N and an acceleration of 4 m/s2, what is the mass? *
pantera1 [17]
22. Mass=Force/acceleration or M=F/a. So the force of this equation would be 88N and the acceleration would be 4m/s^2 so the mass in the problem would be 22.
7 0
3 years ago
4 Al + 3O2 → 2Al2O3 If 14.6 grams Al are reacted, how many liters of O2 at STP would be required?
melomori [17]

Answer: 9.08 L

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}\times{\text{Molar Mass}}    

\text{Moles of} Al=\frac{14.6g}{27g/mol}=0.54moles

4Al+3O_2\rightarrow 2Al_2O_3

According to stoichiometry :

4 moles of Al require  = 3 moles of O_2

Thus 0.54 moles of Al will require=\frac{3}{4}\times 0.54=0.405moles  of O_2

Standard condition of temperature (STP)  is 273 K and atmospheric pressure is 1 atm respectively.

According to the ideal gas equation:

PV=nRT

P = Pressure of the gas = 1 atm

V= Volume of the gas = ?

T= Temperature of the gas = 273 K      

R= Gas constant = 0.0821 atmL/K mol

n=  moles of gas= 0.405

V=\frac{nRT}{P}=\frac{0.405\times 0.0821\times 273}{1}=9.08L

Thus 9.08 L of O_2 at STP would be required

6 0
3 years ago
4. The only two elements in alkanes, alkenes and alkynes are...
Elanso [62]
Carbon and hydrogen

Hope that helps!
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3 years ago
The specific heat of asphalt is 920 J/kg °C. How much heat energy is required to raise the temperature of 113 kilograms of aspha
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C BECUSSE THE X AND Y
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Consider the balanced equation below.
Leokris [45]

The mole ratio is 4:2

7 0
3 years ago
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