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
xeze [42]
2 years ago
7

How many significant figures are in the number 420,000 mi?

Chemistry
1 answer:
Mnenie [13.5K]2 years ago
3 0

Answer:

2

Explanation:

zeros are not considered sig figs

You might be interested in
Using the reaction C12H22O11 + 12 O2 ->12CO2 + 11H2O (e). How many grams of carbon dioxide can be produced from 456.7g sucros
klio [65]

Answer:

704.6 g CO2

Explanation:

MM sucrose = 342.3 g/mol

MM CO2 = 44.01 g/mol

g CO2 = 456.7 g sucrose x (1 mol sucrose/MM sucrose) x (12 moles CO2/1 mol sucrose) x (MM CO2/1mol CO2) = 704.6 g CO2

7 0
2 years ago
In terms of electrons, what happens when Cations bond with anions?
Black_prince [1.1K]

Answer:

when an atom, typically a metal, loses an electron or electrons, and becomes a positive ion, or cation. Another atom, typically a non-metal, is able to acquire the electron(s) to become a negative ion, or anion.

Explanation:

4 0
2 years ago
Describe and explain how petrol is separated from the mixture of hydrocarbons in crude oil?
leonid [27]
It's an exciting and interesting process but those 5 points aren't worth a decent answer. The whole process is called fractioned distillation where different temperatures are reached, transforming the crude oil in gas. After being hit by a cold source it colds becoming different hydrocarbons depending on the temperatures.
6 0
3 years ago
Please help y’all I don’t understand
VashaNatasha [74]

Answer:

D.

Explanation:

You try to get 8 electron on the outermost "shell" so you have no left over or "valence" electrons.

6 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!
sergeinik [125]
It gains 2 electrons from a metal
7 0
2 years ago
Other questions:
  • Which statement explains why carbon dioxide (CO2) is a gas at room temperature? A. There are constant interactions between the C
    8·1 answer
  • [Gradpoint-Question AK-3] Acid is added to a beaker containing crushed marble. What effect does stirring this mixture have on th
    9·2 answers
  • What is the total number of moles of hydrogen gas contained in 9.03 x 10^23 molecules
    5·2 answers
  • How many grams of Fe2O3 will be produced from 10.0 g of Fe and 7.00 g of O2?
    12·2 answers
  • What’s the difference between nonrenewable and renewable energy sources? Is biomass a renewable energy source?
    12·1 answer
  • Ammonia is an important ingredient in many fertilizers. The main process by which ammonia is made is the Haber process. In this
    7·2 answers
  • At 1 atm, how much energy is required to heat 39.0 g of h2o(s at –24.0 °c to h2o(g at 121.0 °c?
    13·1 answer
  • A 500 mL piston has a gas mixture inside at a pressure of 15.0 atm. What volume would the piston have if the pressure increased
    10·1 answer
  • What is water made from <br> (Just a fast answer no detail needed i am just giving points)
    10·1 answer
  • Write the chemical equation for this reaction. Use the picture I provide!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!