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
fgiga [73]
2 years ago
12

Which choice correctly describes the subatomic particles in the isotope 44ca?

Chemistry
1 answer:
Ksenya-84 [330]2 years ago
7 0

Answer:

20 protons, 20 electrons and 24 neutrons

Explanation:

In isotopes, the number of neutrons change, changing the mass number (of the atom)

You might be interested in
A state of matter in which the electrons temporarily separate from the protons. Group of answer choices gas plasma liquid Bose-E
8090 [49]

Answer:

Plasma.

Explanation:

In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states. The three (3) classical states of matter are;

I. Solid.

II. Liquid.

III. Gas

Plasma can be defined as a state of matter in which the electrons temporarily separate from the protons and as a result, it is generally referred to as the fourth (4th) state of matter due to its superheated nature.

8 0
3 years ago
What is the final concentration when 5 ml of a 2.5M copper sulphate solution is diluted to 750 ml?
Firdavs [7]

Answer: The final concentration when 5 ml of a 2.5M copper sulphate solution is diluted to 750 ml is 0.017 M

Explanation:

According to the dilution law,

M_1V_1=M_2V_2

where,  

M_1 = molarity of stock CuSO_4 solution = 2.5 M

V_1 = volume of stock CuSO_4solution = 5 ml  

M_1 = molarity of diluted CuSO_4 solution = ?

V_1 = volume of diluted CuSO_4 solution = 750 ml

Putting in the values we get:

2.5\times 5=M_2\times 750

M_2=0.017

Therefore the final concentration when 5 ml of a 2.5M copper sulphate solution is diluted to 750 ml is 0.017 M

6 0
3 years ago
Select all that are true statements for RNA*
Kitty [74]

Answer
RNA is single stranded
6 0
3 years ago
Read 2 more answers
How many electrons are in a ion that has 16 protons and 59 neutrons if it has negative 2 charge? ​
GalinKa [24]
Hi there I believe it’s 18 please let me know if I’m wrong :)
6 0
1 year ago
I need help ASAP
vova2212 [387]

Answer:

1.4 g/cm3

Explanation:

Density = Mass/Volume

Mass = 21g

Volume = 15cm3

Density = 21/15 = 1.4

8 0
3 years ago
Other questions:
  • How much of the rock cycle can be observed directly? How much must be inferred? Think about both how long things take to happen
    9·1 answer
  • a radioactive substance has a half-life of 10 years.if you start with 30 grams of the substance, how much will remain after 30 y
    13·1 answer
  • If 1 gram of calcium chloride is dissolved in 100 mL of pure water, what temperature change will be observed
    12·1 answer
  • How many grams of fluorine are required to produce 10.0 g of XeF6?
    6·1 answer
  • If 1.0 mol of Mg is mixed with 2.0 mol of Br2, and 0.42 mol of MgBr2 is obtained, what is the percent yield for the reaction?
    7·1 answer
  • Bicarbonate is a solution present in human blood. Bicarbonate helps to maintain our bodies pH and resists pH change. Bicarbonate
    10·2 answers
  • Select all that apply. Which equations are correct?
    14·2 answers
  • If I mix two chemicals in a test tube and notice after a few seconds that there are ice crystals forming on the outside of the t
    6·1 answer
  • Write a balanced equation for the following:
    7·1 answer
  • I have a homework and I need help please.​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!