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
mars1129 [50]
3 years ago
6

A atom has 20 electrons, 21 neutrons, and 20 protons. What is the atomic mass of the atom?

Chemistry
1 answer:
UNO [17]3 years ago
5 0

name= calcium

atomic mass= 40.078 atomic mass unit

no of protons= 20

no of electrons=20

You might be interested in
If you had an aqueous mixture that contained Ag+ , K+ , and Pb2+ cations, how many different solids could precipitate if a chlor
SCORPION-xisa [38]

Answer:

Two, KCl and PbCl₂.

Explanation:

Hello!

In this case, since the addition of chloride ions promote the following three ionic reactions:

Ag^+(aq)+Cl^-(aq)\rightleftharpoons AgCl(s)\\\\K^+(aq)+Cl^-(aq)\rightleftharpoons KCl(aq)\\\\Pb^{2+}(aq)+Cl^-(aq)\rightleftharpoons PbCl_2(s)

We can infer that both silver chloride and lead (II) chloride are precipitated products as their Ksp are 6.56x10⁻⁴ and 1.59x10⁻⁵ respectively, which means they are merely soluble in water.

Best regards!

3 0
3 years ago
How is electron movement related to the bonding in sodium chloride?
stepladder [879]
Cl is highly electronegative and will actually pull away 1 electron from sodium, forming an ionic bond. 
5 0
3 years ago
Read 2 more answers
Which is the larger atom kr Or As
nasty-shy [4]

Answer:

I think As is larger

Explanation:

5 0
3 years ago
In a titration experiment, how many moles of naoh will be required to completely neutralize 1 mole of nitric acid?
katrin [286]

Answer:

One mole

Explanation:

The balanced chemical equation is

<u>1</u>NaOH + <u>1</u>HNO₃ ⟶ NaNO₃ + H₂O

<u>1</u> mol       <u>1</u> mol

The coefficients in front of the formulas tell you the amount of something that reacts with an equivalent amount of something else.

In this reaction, 1 mol NaOH reacts with 1 mol HNO₃.

4 0
3 years ago
Read 2 more answers
A balloon (approximate as a sphere) is inflated such that its
Likurg_2 [28]

Answer: 1436 mL

Explanation: 4/3 • 3.14 • 7^3 <— calculate

8 0
3 years ago
Other questions:
  • What is the difference between a chemical process and a physical process in chemistry?
    12·1 answer
  • Explain the difference betweeen mass and volume
    13·1 answer
  • Argon, which comprises almost 1 percent of the atmosphere, is approximately 27 times more abundant than CO2, but does not contri
    11·1 answer
  • How many grams are in 1.22 mol of Tungston
    5·1 answer
  • Calculate the density of a cube of iron that measures 3.50cm, 0.755 cm, 2.25cm on each side and weighs 47.0g?
    7·1 answer
  • 14. Acid + Metal carbonate:?
    8·1 answer
  • In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. How many
    7·1 answer
  • A balloon contains 3.20 L of helium. The pressure is reduced to 59.0 kPa, and the
    13·1 answer
  • What is the OH- ion concentration, in moles per liter, of an aqueous solution with a pH of 7?
    10·1 answer
  • Which metalloids would behave more like metals? Which metalloids would behave more like nonmetals?.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!