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Neko [114]
3 years ago
11

The formula weight of calcium nitrate (ca(no3)2), rounded to one decimal place, is ________ amu. the formula weight of calcium n

itrate (ca(no3)2), rounded to one decimal place, is ________ amu. 204.2 150.1 116.1 164.0 102.1
Chemistry
1 answer:
murzikaleks [220]3 years ago
3 0
<span>164.0 First we must look up the atomic weight of all elements in calcium nitrate Ca: 40.078 N: 14.0067 O: 15.999 Then we compute the mass of the nitrate polyatomic ion which contains one nitrogen and 3 oxygen atoms. 14.0067+3*15.999 = 62.0037 For the entire molecule we calculate the weight of two nitrates and one calcium 2 * 62.0037 + 40.078 = 164.0152 rounding to the tenths place results in 164.0</span>
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Please help with that problem <br> Important İ have quiz tomorrow
iogann1982 [59]

Answer:

Final pressure of the gas remaining in the first container is 3.5 atm

Explanation:

Since it is given that temperature is constant , we can apply -

PV=constant , where

P = Pressure of the gas

V = Volume of the container in which the gas is contained

Initially,

For container 1 -

P_{i} = 4 atm

V_{1} = 6 L

Finally,

For container 2 -

P_{f,2} = 3 atm

V_{2} = 1 L

For container 1 -

P_{f,1} = ?

V_{1} = 6 L

∴ P_{i}V_{1} = P_{f,1}V_{1} + P_{f,2}V_{2}

∴ 4×6 =  (P_{f,1}×6) +(3×1)

∴ P_{f,1} = 3.5 atm

6 0
2 years ago
Consider the following reaction:
Kitty [74]

Answer : The value of equilibrium constant (Kc) is, 0.0154

Explanation :

The given chemical reaction is:

                        SO_2Cl_2(g)\rightarrow SO_2(g)+Cl_2(g)

Initial conc.    2.4\times 10^{-2}          0             0

At eqm.          (2.4\times 10^{-2}-x)   x              x

As we are given:

Concentration of Cl_2 at equilibrium = 1.3\times 10^{-2}M

That means,

x=1.3\times 10^{-2}M

The expression for equilibrium constant is:

K_c=\frac{[SO_2][Cl_2]}{[SO_2Cl_2]}

Now put all the given values in this expression, we get:

K_c=\frac{(x)\times (x)}{2.4\times 10^{-2}-x}

K_c=\frac{(1.3\times 10^{-2})\times (1.3\times 10^{-2})}{2.4\times 10^{-2}-1.3\times 10^{-2}}

K_c=0.0154

Thus, the value of equilibrium constant (Kc) is, 0.0154

4 0
3 years ago
Why is a relatively large amount of energy required to turn liquid water into water vapor?
bagirrra123 [75]
Water can exist in three states.

1) Solid State: Called Ice.

2) Liquid State: Called Liquid Water.

3) Gas State: Called Steam.

Remember:
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                  If you want to change the state from solid to liquid, or from liquid to gas you will have to provide energy in order to break the interactions between the molecules. Stronger the interactions, the more is energy required to break the interactions.
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3 0
2 years ago
Which is caused by gravity?
MissTica
Mass wasting I think it's done
5 0
3 years ago
59 Q.No. 28 b Hydrogen peroxide can act as oxidizing as well as reducing agent with example. ​
professor190 [17]

Answer:

Hydrogen peroxide can function as an oxidizing agent as well as reducing agent. 

H2O2 act as oxidizing agent in acidic medium.

Explanation:

Example : 2FeSO4 +H2SO4 +H2O2 —>

(ferrous sulphate)

Fe2(SO4)3 +2H2O

(ferric sulphate)

3 0
1 year ago
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