1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
prohojiy [21]
3 years ago
11

How many protons and neutrons are in an atom with this representation:

Chemistry
2 answers:
Alik [6]3 years ago
6 0

Answer:

Explanation:

There isn't any set number of isotopes an atom can have. As the number of neutrons in an atom increases or decreases, the isotopes tend to become more and more unstable until they get to the point where they decay faster than neutrons can change. According to the International Atomic Energy Agency, Mercury currently has the most at 45 identified isotopes.

natima [27]3 years ago
3 0

Answer:

1. 17 protons / 10 neutrons

2. Scandium

3. Negative

Explanation:

1. The bottom number is the same as the atomic number on top of the abbreviation. To find the # of neutrons, subtract the mass number with the number of protons

2. The bottom number (21) is the number of protons AND the atomic number (the a.n & # of pro. are always going to be the same)

3. Always think about this: if you add electrons, you take away charge - if you take away electrons, you add charge

*Idek if these were the correct correct answers but I tried my best*

You might be interested in
A gas occupies 4.31 liters at a pressure of 0.755 atm. Determine the Temperature
kakasveta [241]

A gas that occupies 4.31 litres at a pressure of 0.755 atm will have a temperature of 39.58°C. Details about temperature can be found below.

<h3>How to calculate temperature?</h3>

The temperature of a gas can be calculated using the following formula:

PV = nRT

Where;

  • P = pressure
  • V = volume
  • n = number of moles
  • R = gas law constant
  • T = temperature

0.755 × 4.31 = 1 × 0.0821 × T

3.25 = 0.0821T

T = 3.25 ÷ 0.0821

T = 39.58°C

Therefore, a gas that occupies 4.31 litres at a pressure of 0.755 atm will have a temperature of 39.58°C.

Learn more about temperature at: brainly.com/question/11464844

#SPJ1

4 0
2 years ago
onsider the reaction, NO2(g) + CO(g) → NO(g) + CO2(g), for which the rate law has been determined to be: Rate = k[NO2]2[CO]. Whi
nlexa [21]

Answer:

The correct answer is option D.

Explanation:

Rate of the reaction is a change in the concentration of any one of the reactant or product per unit time.

NO_2(g) + CO(g)\rightarrow NO(g) + CO_2(g)

Rate of the reaction:

R=-\frac{1}{1}\times \frac{d[NO_2]}{dt}=-\frac{1}{1}\times \frac{d[CO]}{dt}

Rate of decrease in nitrogen dioxide concentration is equal to the rate of decrease in carbon monoxide.

Given rate expression of the reaction:

R = k[NO2]^2[CO]

Rate of the reaction on doubling concentration of nitrogen dioxide and carbon monoxide : R'

R'=k(2\times [NO_2])^2(2\times [CO])=8\times k[NO2]^2[CO]=8R

Doubling the concentrations of nitrogen dioxide and carbon monoxide simultaneously will increase the rate of the reaction by a factor of eight.

Hence, none of the given statements are true.

6 0
3 years ago
Read 2 more answers
An isotope will lose nucleons,protons,or neutrons in order to become more
Debora [2.8K]
Many atoms if they are radioactive isotopes will loss protons and neutrons as radiation in order to gain and become more stable 

hope that helps
8 0
4 years ago
Read 2 more answers
Which is a similarity between alcohol fermentation and aerobic respiration?<br>​
Alexus [3.1K]

I found this information:

Anaerobic respiration begins the same way as fermentation. The first step is still glycolysis, and it still creates 2 ATP from one carbohydrate molecule. However, instead of ending with glycolysis, as fermentation does, anaerobic respiration creates pyruvate and then continues on the same path as aerobic respiration.

After making a molecule called acetyl coenzyme A, it continues to the citric acid cycle. More electron carriers are made and then everything ends up at the electron transport chain. The electron carriers deposit the electrons at the beginning of the chain and then, through a process called chemiosmosis, produce many ATP. For the electron transport chain to continue working, there must be a final electron acceptor. If that acceptor is oxygen, the process is considered aerobic respiration.

Scientists believe that fermentation and anaerobic respiration are older processes than aerobic respiration.

I hope this help. :)

have a good day!

3 0
4 years ago
Read 2 more answers
Is the process of bananas ripening a chemical change or a physical change? explain?
Rom4ik [11]
Bananas ripening is a chemical change. First, there is a change in color of peel from green to yellow then to brown. Second, there is a change in taste. You will notice a change in taste as the bananas ripen. They become sweeter and sweeter as they begin to ripen.
7 0
3 years ago
Other questions:
  • In the following reaction, what are the reactants? NaCl + KBr --&gt; NaBr + KCI *
    11·1 answer
  • What happens to the rate of dissolution as the temperature is increased in a gas solution?
    6·1 answer
  • What is the ratio of NH3 to H3PO4?
    5·1 answer
  • Suppose you have an Internet friend who study chemistry just like you are your friend claims the change from liquid water to wat
    7·1 answer
  • 2. What is the name of the following compound? *
    14·1 answer
  • 8. Which of the following is an example of a phase?
    8·2 answers
  • How many of the planets have an orbital period of less than one Earth year?
    11·1 answer
  • What is the mol ratio between A and D in the following reaction?<br> 4A + 5B → 2C + 3D
    7·1 answer
  • Indique el nombre que recibirían los siguientes compuestos de acuerdo a la
    10·1 answer
  • PLS HELP ILL GIVE BRAINLIEST
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!