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
fomenos
3 years ago
10

The number 0.000402 expressed in scientific notation is

Chemistry
1 answer:
goldfiish [28.3K]3 years ago
3 0

Answer:

hope its help you

Explanation:

4.02 x 10-4

You might be interested in
Which is a FALSE statement about compounds?
rewona [7]

Answer:  D. Made of only one kind of atom

Explanation:A compound forms whenever two or more atoms form chemical bonds with each other.

3 0
3 years ago
Read 2 more answers
N__________ is the study of atoms.
AlekseyPX
I think the answer might be nuclear physics
3 0
3 years ago
Read 2 more answers
Consider two different ions. The anion has a valence of -2. The cation has a valence of +2. The two ions are separated by a dist
strojnjashka [21]

Answer:

Force of attraction = 35.96 \times 10^{27}N

Explanation:

Given: charge on anion = -2

Charge on cation = +2

Distance = 1 nm = 10^{-9} m

To calculate: Force of attraction.

Solution: The force of attraction is calculated by using equation,

F = \dfrac{k \times q_1 q_2}{ \r^2} ---(1)

where, q represents the charge and the subscripts 1 and 2 represents cation and anion.

k = 8.99 \times 10^9 \ Nm^{2}C^{-2}

F = force of attraction

r = distance between ions.

Substituting all the values in the equation (1) the equation becomes

F = \dfrac{8.99 \times 10^9 \times 2 \times 2}{ \left ( 10^-9 \right )^2 }

Force of attraction = 35.96 \times 10^{27}N

6 0
2 years ago
When substances are evenly spread throughout a mixture, it is called ____________________?
harina [27]
The answer is _Dissolving_.

Hope tis helps

5 0
2 years ago
Can you think of any practical reasons why you might want to know if there is carbon dioxide in air mixtures? please help
san4es73 [151]
Yes.  carbon dioxide is deadly and i want to get away from it fast.
8 0
3 years ago
Other questions:
  • A concentration cell is built based on the following half reactions by using two pieces of zinc as electrodes, two Zn2+ solution
    14·1 answer
  • According to the equation for this chemical reaction, what does the 2 in front of 2Ag tell us?
    12·2 answers
  • When was copper discovered?​
    9·1 answer
  • When dissolved in water, which compound is generally considered to be Arrhenius acid
    14·1 answer
  • Which reaction occurs at the cathode of a lead-storage battery that is being recharged?
    8·1 answer
  • Why are protons in an atom so important? Question 5 options: A. Protons determine the atoms' identity (type of element) and wher
    14·2 answers
  • Match the appropriate name for each chemical reaction description provided.
    6·2 answers
  • The density of cadmium is 8.65 g/mL, what is the volume of a 33.4 g object made of pure cadmium?
    9·1 answer
  • How do you calculate the number of neutrons???? please help
    9·1 answer
  • How many moles are equal to 89.23 g of calcium nitrate?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!