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
Scilla [17]
2 years ago
8

(5 x 10-21) - (4 x 10-22)​

Chemistry
2 answers:
Alborosie2 years ago
6 0

Answer:

11

Explanation:

5×10-21 = 29

4×10-22 = 18

29 - 18 = 11

Ivanshal [37]2 years ago
5 0

Answer:

29     and      18

Explanation:

You might be interested in
Complete the chart. (Remember to enter a "0" if necessary.)
antoniya [11.8K]
Just remember how many electrons can each sublevel hold.

S=2
P=6
D=10

Since we have 10 for atomic number, we can assume we have 10 electrons

1S2
2S2
2P6
The rest have zero because we already have 10 (2+2+6=10)
3 0
3 years ago
Read 2 more answers
Johanna makes the table below to organize her notes about centripetal forces. Which type of force should she place in the cell m
Valentin [98]

<u>Answer:</u> The correct answer is Option 2.

<u>Explanation:</u>

Centripetal force is defined as the force that acts on a body moving in a circular path and is directed towards the center around which the body is moving.

Mathematically,

F_c=\frac{mv^2}{r}

Where,

F_c = centripetal force

m = mass of the object

v = tangential velocity

r = radius of the path

From the above relation, X corresponds to the radius and Y corresponds to the tangential velocity.

Hence, the correct answer is option C.

3 0
3 years ago
Read 2 more answers
Which type of salt would be most effective for melting ice on roads?
OLga [1]
Calcium Chloride is the salt that is effective for melting ice on roads

3 0
3 years ago
Read 2 more answers
A liquid occupies a volume of 5.0 L has a mass of 6.0 kg. what is the density of a the lights in kg/L
grandymaker [24]

Answer:

Hey there! :

Volume = 5.0 L

mass = 6.0 Kg

Therefore:

Density = mass / Volume

Density = 6.0 / 5.0

Density = 1.2 kg/L

6 0
3 years ago
Which part of the cell does this illustration represent?
amm1812

The answer is B. Mitochondria

It is the powerhouse of the cell

7 0
2 years ago
Read 2 more answers
Other questions:
  • A compound contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen (by mass). calculate the empirical formula.
    5·1 answer
  • Copper (II) oxide reacts with carbon to form Copper metal and carbon dioxide. If 365 grams of Copper (II) oxide were reacted wit
    12·1 answer
  • Please please help:(
    10·1 answer
  • A scientist is studying a sample of matter. The matter has no definite shape or volume, and it can conduct an electric current.
    12·2 answers
  • The following chemical equation is unbalanced. When the equation is balanced, what is the coefficient for pure calcium (Ca)? A.
    9·2 answers
  • GIVE REASON:A gas fills completely the container in which it is kept
    12·2 answers
  • Which one of these three elements conatain the most protons
    8·2 answers
  • To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds sodium hydroxide solution to a sample
    8·1 answer
  • What is the final step in the scientific method
    12·2 answers
  • What are elements and how many elements discovered
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!