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
mylen [45]
3 years ago
14

2K2SO4 <--- how many atoms are there in this formula?

Chemistry
1 answer:
jekas [21]3 years ago
3 0
There are 14 atoms, the 2 at the front times' everything by 2, so there 4Ks, 2Ss and 8Os, altogether 14
You might be interested in
Write the electron configuration, the orbital notation, and the noble gas notation for the following elements:
V125BC [204]

Answer:

See explanation

Explanation:

The electron configuration of an atom means a detailed arrangement of the electrons in the atom in orbitals. It normally begins from the least energetic orbitals to the most energetic orbital.

For each of the elements, their electronic configuration in terms of the nearest noble gas is shown below;

P - [Ne] 3s2 3p3

I- [Kr] 4d10 5s2 5p5

Pb- [Xe] 4f14 5d10 6s2 6p2

F- [He] 2s2 2p5

7 0
3 years ago
Calculate the amount of water required to prepare 500g of 2.5% solution of sugar.
Snowcat [4.5K]

(i) We start by calculating the mass of sugar in the solution:

mass of sugar = concentration × solution mass

mass of sugar = 2.5/100 × 500 = 12.5 g  

Then now we can calculate the amount of water:

solution mass = mass of sugar + mass of water

mass of water =  solution mass - mass of sugar

mass of water = 500 - 12.5 = 487.5 g

(ii) We use the following reasoning:

If       500 g solution contains 12.5 g sugar

Then    X g solution contains 75 g sugar

X=(500×75)/12.5 = 3000 g solution

Now to get the amount of solution in liters we use density (we assume that is equal to 1):

Density = mass / volume

Volume = mass / density

Volume = 3000 / 1 = 3000 liters of sugar solution

8 0
3 years ago
What is the difference between parent material
Naily [24]
I don’t understand the question
4 0
4 years ago
An isotope with a half life of 10 min and a starting sample size of 100 g would have
IgorC [24]

Answer:

12.5 gm left

Explanation:

30 minutes is THREE half lives

   1/2^3 = 1/8th   would be left

100g * 1/8 = 12.5 gm

7 0
2 years ago
In terms of particle movement and energy what occurs when a solid is heated to its melting point
Lelechka [254]
The particles are given more energy and start to vibrate faster. In certain temps the particles vibrate so much that their ordered structure breaks down to the point the solid melts into liquid
4 0
3 years ago
Other questions:
  • How many molecules are in 65.45 moles of oxygen?
    13·1 answer
  • Question 1
    11·1 answer
  • What is the approximate mass of iron
    15·1 answer
  • Characteristic of a chemical compound
    13·1 answer
  • Oxygen (O2) and nitrogen (N2) do not have much greenhouse effect, but several trace gases including carbon dioxide (CO2), methan
    9·1 answer
  • If solid nickel metal were mixed with cobalt ion, what would you expect to see happen?
    9·1 answer
  • If my primary DNA strand is ATACCGCAA <br> a write the complimentary DNA strand
    10·2 answers
  • Which form of energy is associated with the random motion of particles in a gas?
    12·2 answers
  • Someone please help and thank you
    11·1 answer
  • Which best describes what occurs when heating a compound containing a
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!