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]
3 years ago
7

The number 0.000402 expressed in exponential notation is

Chemistry
1 answer:
Mashutka [201]3 years ago
8 0

Answer:

4.02 multiply by 10^4

Explanation:

You might be interested in
Which of the following is an electron configuration for an electrically neutral atom of neon?
Wewaii [24]
1s2 2s2 3p6 is the answer!
5 0
4 years ago
Read 2 more answers
There are three known forms of hydrogen. These forms are called (ions/copies/isotopes) of each other. Each of these forms will h
liraira [26]
Answers by order. 
Isotopes.
Protons.
Neutrons. 
7 0
3 years ago
Read 2 more answers
An atom of gold (Au) has 79 electrons. How many protons must it have if it has a net charge of 0?
Varvara68 [4.7K]
In order to balance out the Electrons, and give it a net charge of 0, you would need 79 Protons.
6 0
3 years ago
Read 2 more answers
What mass of oxygen is needed to burn 4g of hydrogen, given the equation below
aleksandrvk [35]

32g of oxygen is required to burn 4g of hydrogen.

Define molecular mass.

A specific molecule's mass is expressed in daltons and is known as the molecular mass (m) (Da or u). Due to the varying isotopes of an element that they contain, multiple molecules of the same substance can have distinct molecular weights.

The total atomic mass of every atom in a molecule, calculated using a scale with hydrogen, carbon, nitrogen, and oxygen having atomic masses of 1, 12, 14, and 16, respectively. For instance, water has a molecular mass of 18 (2 + 16), which consists of two hydrogen atoms and one oxygen atom. known also as molecular weight.

In ,2H2+O2-----> 2H2O

H 2 molecules have a mass of 2 g/mol.

The molecular weight of oxygen is 32 g/mol.

When the chemical equation is balanced,

To totally react, 32 g of oxygen are needed for every 22=4 g of hydrogen.

To know more about molecular mass use link below:

brainly.com/question/21334167

#SPJ1

7 0
1 year ago
Can anyone give me the formula to Carbon dioxide please?
kifflom [539]
Co2 is the fornula to carbon dioxide
8 0
3 years ago
Other questions:
  • According to the kinetic theory of motion everything is made of particles and all particles are?
    6·1 answer
  • What forces typically hold separate molecules together?
    14·1 answer
  • Which of these statements is not true about chemical reaction rates
    7·2 answers
  • Complete the electron-dot structure of s-allylcysteine, showing all lone-pair electrons.
    15·1 answer
  • lanets formed from ____ left over from the formation of the Sun at the center of the cloud. a. gravel c. solar wind b. gas, ice,
    10·2 answers
  • Complete combustion of 3.60 g of a hydrocarbon produced 11.1 g of co2 and 5.11 g of h2o. what is the empirical formula for the h
    8·1 answer
  • In what type of organism and what location in that organism does photosynthesis generally occur?
    13·1 answer
  • How do you convert the measured mass of a substance to moles?
    9·2 answers
  • The particles of a gas inside a balloon are experiencing an increase in the average kinetic energy and the number of collisions
    11·1 answer
  • Which rock layer is the youngest?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!