2 years ago

Fill in the coefficients that will balance the following reaction:

Chemistry

2 answers:

bulgar [2K]2 years ago

6 0

2Ca + 2CO2 + O2 → 2CaCO3

Hope it helps

romanna [79]2 years ago

4 0

2Ca + 2CO2 + O2 → 2CaCO3

Have a gr8 day ahead

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A student collects 629ml of oxygen at 0.500at, the student collected 0.0337 moles. At what temperature did the student collect t

VashaNatasha [74]

Answer:

114 K

Explanation:

Given data

Volume of oxygen (V): 629 mL = 0.629 L

Pressure of oxygen (P): 0.500 atm

Moles of oxygen (n): 0.0337 mol

Temperature (T): ?

We can calculate the temperature at which the student collected the oxygen using the ideal gas equation.

$P \times V = n \times R \times T\\T = \frac{P \times V}{n \times R} = \frac{0.500atm \times 0.629L}{0.0337mol \times 0.0821atm.L/mol.K} = 114 K$

The oxygen gas was collected at 114 K.

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2 years ago

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10) Calculate the energy change for the formation of LiCl(s) from its elements in their standard states and the following tabula

marissa [1.9K]

Answer:

-400.3 kJ/mol

Explanation:

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3 years ago

a 20ml sample of hcl was titrated with the 0.0220 M Naoh. to reach the endpoint required 23.72 mL of the NaOh. Calculate the mol

Y_Kistochka [10]

Answer:

Molarity of HCl=0.026092M

Explanation:

The equation for the reaction is;

HCl + NaOH ⇒ NaCl + H2O

Using the formular, $\frac{C_{A}V_{A}}{C_{B}V_{B} }=\frac{nA}{nB}$ ..........equ1

where $C_{A}$ is the concentration of Acid,

$V_{A}$ is volume of acid

$C_{B}$ is concentration of the base

$V_{B}$ is volume of the base

nA is the number of moles of Acid

nB is number of moles of base

nA = 1, nB=1 , $V_{A}=20ml$ , $C_{B}=0.022M$ , $V_{B}=23.72mL$

we will input these values into equation1 to solve for $C_{A}$

$\frac{C_{A}*20}{0.022*23.72}=\frac{1}{1}$

$C_{A}*20=0.022*23.72$

$C_{A}=0.026092M$

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2 years ago

What's 1000000000+100000000

spin [16.1K]

Answer:

1100000000

Explanation:

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Indicar que elemento es de transición *

Musya8 [376]

Answer:

c hierro

no se la otra sorry

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2 years ago