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4 years ago

If atoms contain charged particles, why do they not have a charge?

Chemistry

1 answer:

Charra [1.4K]4 years ago

3 0

Answer:

every atom has no overall charge. because they contain equal numbers of positive protons and negative electrons. they cancel each other out making them a neutral atom.

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How many protons and neutrons are in 119_Sn? O a. 50 n and 119 p O b. 50 p and 169 1 O c. 50 p and 69 O d. 50 n and 169 p O e. N

Anastaziya [24]

Answer: The given isotope of tin has 50 protons and 69 neutrons.

Explanation:

Atomic number is defined as the number of protons or number of electrons that are present in neutral atom. It is represented as Z.

Atomic number = Number of protons = Number of electrons

Mass number is defined as the sum of number of protons and number of neutrons. It is represented as A.

Mass number = Number of protons + Number of neutrons

We are given:

An isotope having representation $_{50}^{119}\textrm{Sn}$

Mass number of Sn = 19

Atomic number = 50

Number of neutrons = Mass number - Atomic number = 119 - 50 = 69

Hence, the given isotope of tin has 50 protons and 69 neutrons.

3 0

3 years ago

PLEASE HELP!!!!

shtirl [24]

1) d

2) b because the independent variable is the thing you change/control in an experiment

3) c because the dependent variable is the thing being measured in an experiment

4)hmm it might be d, as c and a are both correct as different sized feeders would make it an unfair test and different types of food would as well

5) c

6) a

7) b obviously because if he activated them at different times then the ones activated last would have an advantage

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4 years ago

how does describing how ideas in science texts are connected help you understand how things work and why things change?

NNADVOKAT [17]

Answer:

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Explanation:

7 0

3 years ago

Calculate the pH of the solution: [OH-] = 1x10^-11M a.11.0 b.12.0 c.2.7 d.3.0

Veronika [31]

p [OH-] = -log[OH-]= -log ( 1x10^-11M) = 11

we know that

p[OH-] + p[H+] = 14

so p[H+] = 14- p[OH-] = 14- 11 = 3

pH = 3, answer

6 0

3 years ago

The process by which molecules of water vapor in the air become liquid water answers

Musya8 [376]

I believe that is condensation

6 0

4 years ago