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serg [7]
2 years ago
8

23994Pu + 10n → BCBa + 9138Sr + 3 10n

Chemistry
1 answer:
mihalych1998 [28]2 years ago
7 0

Answer:

A

Explanation:

You might be interested in
1)
zaharov [31]

Answer:

B. what happens when iron rusts in the presence of water

Explanation:

Chemistry is a branch of science involving the composition and changes of matter. In other words, a chemist, who is a trained specialist in the science of chemistry, seeks to answer questions related to properties of matter.

In this question, a chemist is most likely to study "what happens when iron rusts in the presence of water" because it involves a change in the chemical properties of a substance (iron) i.e. a chemical change. However, what happens when ice melts to liquid water is a physical change.

3 0
3 years ago
Neutrons are very important to an atom's ________<br> properties
solniwko [45]

Answer:

Intrinsic properties

Explanation:

Neutron affects the mass of an atom and intrinsic properties depend on the mass of the substance

7 0
2 years ago
Givin 11 sodium 23, what is the atomic mass
shutvik [7]
The atomic mass of sodium is 23. i hope that helps!
5 0
3 years ago
Calculate ΔH o rxn for the following: CH4(g) + Cl2(g) → CCl4(l) + HCl(g)[unbalanced] ΔH o f [CH4(g)] = −74.87 kJ/mol ΔH o f [CCl
anzhelika [568]

Answer:  ΔH for the reaction is -277.4 kJ

Explanation:

The balanced chemical reaction is,

CH_4(g)+Cl_2(g)\rightarrow CCl_4(l)+HCl(g)

The expression for enthalpy change is,

\Delta H=\sum [n\times \Delta H(products)]-\sum [n\times \Delta H(reactant)]

\Delta H=[(n_{CCl_4}\times \Delta H_{CCl_4})+(n_{HCl}\times B.E_{HCl}) ]-[(n_{CH_4}\times \Delta H_{CH_4})+n_{Cl_2}\times \Delta H_{Cl_2}]

where,

n = number of moles

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

\Delta H=[(1\times -139)+(1\times -92.31) ]-[(1\times -74.87)+(1\times 121.0]

\Delta H=-277.4kJ

Therefore, the enthalpy change for this reaction is, -277.4 kJ

4 0
2 years ago
All reactions involving a change in temperature are exothermic.<br> a. True<br> b. False
diamong [38]
False. An increase in temperature is an exothermic reaction. However, when a temperature decreases this is known as an endothermic reactionz
8 0
3 years ago
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