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Lynna [10]
3 years ago
14

What is a true statement about the atom's nucleus?

Chemistry
1 answer:
mel-nik [20]3 years ago
8 0
That it’s the power house and only hold protons and neutrons.
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Write the balanced equation for a reaction between aqueous nitric acid (HNO3) and solid lithium metal (this is a single replacem
Lemur [1.5K]

<u>Answer:</u> The equation is given below.

<u>Explanation:</u>

Single replacement reactions are the chemical reactions in which more reactive metal displaces a less reactive metal from its chemical reaction. General equation for these reactions is given by the equation:

A+BC\rightarrow AC+B

Metal A is more reactive than metal B.

The reactivity of metals is judged with the help of reactivity series. In this series, the metals lying above are more reactive than the metals which lie below in the series.

For the reaction of solid lithium metal and nitric acid, the equation follows:

3Li(s)+4HNO_3(aq.)\rightarrow 3LiNO_3(aq.)+2H_2O(l)+NO(g)

This is a type of single replacement reaction because Lithium (more reactive metal) is replacing Hydrogen (less reactive metal) from the chemical reaction.

3 0
3 years ago
Which of the following is the correct formula for copper (I) sulfate trihydrate? CuSO4 · 3H2O
PilotLPTM [1.2K]
It is either the 3rd answer or the 4th answer. Both are correct ways to write hydrates, but I was taught the 4th way. Just make sure this answer matches the format of the examples your teacher gave you.
6 0
3 years ago
Read 2 more answers
What is 20 times 200000000
iren [92.7K]

Answer: 4000000000

because 20X200000000=4000000000

4 0
3 years ago
The iron with which they make the houses or bridges is the same as our blood?
Leviafan [203]

Explanation:

yes, they are the same.

"Iron is a mineral that the body needs for growth and development. Your body uses iron to make hemoglobin, a protein in red blood cells that carries oxygen from the lungs to all parts of the body, and myoglobin, a protein that provides oxygen to muscles."

Fun fact:

At 4 grams per person, you'd need at least 2,352 completely drained donors to make a iron longsword out of blood.

3 0
3 years ago
What.could.you.do.to make a chemical reaction proceed faster?
jekas [21]
By adding catalyst e.g. mno2,vanadium oxide
by increasing the temperature if it is an exothermic reaction
by also decreasing if it is an endothermic reaction

6 0
3 years ago
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