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Anettt [7]
2 years ago
9

What is the role of an electron in an atom?

Chemistry
1 answer:
tigry1 [53]2 years ago
8 0

Answer

Electrons live inside the nucleus and carry a neutral charge.

Explanation:

You might be interested in
What is the concentration of a solution formed by mixing 89.94 grams of cobalt (II)
bezimeni [28]

Answer:

0.47 M

Explanation:

The concentration of the solution can be calculated using the following equation:

C = \frac{\eta}{V} = \frac{m}{M*V}

<u>Where:</u>

V: is the volume of the solution = 68.6x10⁻² L

η: is the moles of cobalt (II)  sulfate

m: is the mass of cobalt (II)  sulfate = 89.94 g

M: is the molar mass of cobalt (II)  sulfate = 281.103 g/mol

The concentration of cobalt (II)  sulfate is:

C = \frac{m}{M*V} = \frac{89.94 g}{281.103 g/mol*68.6 \cdot 10^{-2} L} = 0.47 mol/L

We used the molar mass of the cobalt (II)  sulfate heptahydrate (281.103 g/mol) since it is one of the most common salts of cobalt.

Therefore, the concentration of a solution of cobalt (II)  sulfate is 0.47 M (assuming that the cobalt (II)  sulfate is heptahydrate).

I hope it helps you!

3 0
3 years ago
Read 2 more answers
Which two terns describe this type of data? First to answer (correct) gets brainlist
Nina [5.8K]

Answer:

The is B. and D.

Explanation:

5 0
3 years ago
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. In
Scorpion4ik [409]

Answer:

The net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide is -470.4 kJ/mol.

Explanation:

Step 1 : Calcium carbide and water react to form acetylene and calcium hydroxide

CaC_2(s)+2H_2O(g)\rightarrow

             C_2H_2(g)+Ca(OH)_2(s),\Delta H_1=-414 kJ..[1]

Step 2 : Acetylene, carbon dioxide and water react to form acrylic acid

6C_2H_2(g)+3CO_2(g)+4H_2O(g)\rightarrow 5CH_2CHCOOH(g),\Delta H_2=132 kJ..[2]

Using Hess's law:

[1] × 6 + [2]

6CaC_2(s)+16H_2O(g)+3CO_2\rightarrow 5CH_2CHCOOH(g)+6Ca(OH)_2(s),\Delta H_3=?

\Delta H_3=6\times \Delta H_1+\Delta H_2

\Delta H_3=6\times (-414 kJ)+132 kJ=-2352 kJ

The energy released on formation of 5 moles of acrylic acid = -2352 kJ

The energy released on formation of 1 moles of acrylic acid :

=\frac{-2352 kJ}{5 mol}=-470.4 kJ/mol

Hence, the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide is -470.4 kJ/mol.

5 0
2 years ago
What mass of chlorine gas is contained in a 10.0 L tank at 31.0° C and 3.50 atm?
jeyben [28]
You need to use the ideal gas law (PV=nRT) and solve for n. ((3.50atm•10.0L)/(0.0821(L•atm/mol•K)•304K) = n = 1.40 moles. 1 mole of Cl2 = 70.9 gm/mole. The mass would be 99.43 gm
8 0
3 years ago
Consider the reaction and its equilibrium constant at 25.0 ∘C :
olga55 [171]

Since Qp>Kp , the reaction is not at equilibrium.

<h3>What is the equilibrium constant?</h3>

The equilibrium constant shows the extent to which reactants are converted into products.

Now we have to obtain the Qp as follows;

Qp =[CH3OH]/[CO] [H2]^2

Qp = 0.265/(0.265) (0.265)^2

Qp = 14.2

Now we know that Kp = 6.09×10−3, Since Qp>Kp , the reaction is not at equilibrium.

Learn more about equilibrium constant:brainly.com/question/10038290

#SPJ1

5 0
1 year ago
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