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bixtya [17]
3 years ago
15

I need help answering this question

Chemistry
2 answers:
Nataly [62]3 years ago
7 0
The answer is b and d because the number of protons and neutrons are together if you count on em
Gemiola [76]3 years ago
6 0

Answer:

b,d

Explanation:

An ion is an atom with a difference in the amount of protons and elektrons.

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How are bones important to the lymphatic system?
Marianna [84]
Our bone marrow continuously makes new red and white blood cells. The lymphatic system consists of the bone marrow, the spleen, the thymus (in young people), and lymph nodes.
7 0
3 years ago
Radium decays to form radon. Which equation correctly describes this decay? Superscript 226 Subscript 88 Baseline Upper R a righ
KiRa [710]

Answer: 226 Subscript 88 Baseline Upper R a right arrow Superscript 222 Subscript 86 Baseline Upper R n + Superscript 4 Subscript 2 Baseline Upper H e

Explanation:

Alpha decay : When a larger nuclei decays into smaller nuclei by releasing alpha particle. In this process, the mass number and atomic number is reduced by 4 and 2 units respectively.

The general representation of alpha decay reaction is:

^{A}_{Z}\textrm{X}\rightarrow ^{A-4}_{Z-2}\textrm {Rn}+ ^{4}_{2}\textrm{He}

Representation of Radium decays to form Radon

^{226}_{88}\textrm{Ra}\rightarrow ^{222}_{86}\textrm {Rn}+ ^{4}_{2}\textrm{He}

Thus 226 Subscript 88 Baseline Upper R a right arrow Superscript 222 Subscript 86 Baseline Upper R n + Superscript 4 Subscript 2 Baseline Upper H e represents alpha decay.

         

4 0
3 years ago
Chất nào dưới đây không phải là este?<br> A. HCOOC6H5 B. HCOOCH3 C. CH3COOH D. CH3COOCH3
frozen [14]

Answer:

C nhé ! CH3COOH là axit chứ không phải este

8 0
3 years ago
Which answer below correctly identifies the type of change and the explanation for the boiling of water?
Zanzabum

Answer:

It's B

Explanation:

The explanation is basically the answer choice lol. Stay safe!

4 0
3 years ago
Calculate the pH of a 2.0 M H2SO4 solution.
noname [10]
 <span>H2SO4 gives 2 moles oh H+ per mole of acid 

[H2SO4] = 2M so [H+] = 4M 

pH = -log(4) = -.6 

Therefore, the pH </span><span>of a 2.0 M H2SO4 solution is -0.6
</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
5 0
3 years ago
Read 2 more answers
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