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
viktelen [127]
2 years ago
15

How many moles are in 7.8g of CaO?

Chemistry
1 answer:
Bess [88]2 years ago
4 0

This compound is also known as Calcium Oxide. The SI base unit for amount of substance is the mole. 1 grams CaO is equal to 0.017832495800447 mole. Note that rounding errors may occur, so always check the results.

Hope I helped :)

You might be interested in
Reliable results are results that can be...<br> A: communicated<br> B: evaluated<br> C: duplicated
insens350 [35]
Reliable results are results that can be... A: Communicated
4 0
3 years ago
Read 2 more answers
The process in which water changes from a liquid to a vapor is known as __________.
Basile [38]
Hello!
The answer is Evaporation!

When you add enough heat to a liquid, it boils turning into a gas. This is called Evaporation
7 0
3 years ago
Read 2 more answers
How many atoms of iodine are in 12.75g of CaI2? Hint. How many Iodines are there in one CaI2 particle?
xenn [34]

Answer:

5.225x10^{22}atoms\ I

Explanation:

Hello!

In this case, since 12.75 g of calcium iodide has the following number of moles (molar mass = 293.89 g/mol):

n_{CaI_2}=12.75gCaI_2*\frac{1molCaI_2}{293.89gCaI_2}=0.0434molCaI_2

In such a way, since 1 mole of calcium iodide contains 2 moles of atoms of iodine, and one mole of atoms of iodine contains 6.022x10²³ atoms (Avogadro's number), we compute the resulting atoms as shown below:

atoms\ I=0.0434molCaI_2*\frac{2molI}{1molCaI_2} *\frac{6.022x10^{23}atoms\ I}{1molI} \\\\atoms\ I = 5.225x10^{22}atoms\ I

Best regards!

4 0
3 years ago
Washing machines use a large amount of water. A student suggested that old pairs of stained jeans which have to be washed more f
sukhopar [10]

Answer:

C |||| It is not practical because it takes a huge amount of water to produce a new pair of jeans

Explanation:

If you're doing flvs then it's C.

5 0
2 years ago
Read 2 more answers
A reaction is exothermic when Group of answer choices weak bonds break and strong bonds form. strong bonds break and weak bonds
Leona [35]

Answer:

weak bonds break and strong bonds form

Explanation:

An exothermic reaction is a chemical reaction in which heat energy is evolved during the reaction process.

Bond formation requires energy while bond breakage releases energy. More energy is needed for the formation of weak bonds as compared to strong bonds.

<em>Hence, when weak bonds break, they release more energy than needed to make a corresponding strong bond leading to the release of the remaining energy as heat.</em>

6 0
3 years ago
Other questions:
  • PLEASE HELP<br> I really need someone to answer this!!!!
    11·2 answers
  • How does adversity lead to change?​
    6·1 answer
  • Ocean exploration is limited by
    8·2 answers
  • A buffer is made up of 0.300 L of each of 0.500 M KH2PO4 and 0.317 M K2HPO4. Assuming that volumes are additive, (a.) calculate
    13·1 answer
  • The secondary structure of a protein refers to the ___________.a. three-dimensional folded structure of the protein. b. configur
    6·1 answer
  • If there are 3 moles of hydrogen, 6 moles of oxygen, and 9 moles of helium in a 10 L vessel at 27°C, the total pressure of the g
    10·1 answer
  • What type of reaction occurs? S(s) + O2 (g) → SO2(g)
    7·2 answers
  • A certain chemical contains 46.30% chlorine, 47.05% carbon, 6.63% hydrogen. What is the molecular formula of the compound? The m
    12·1 answer
  • In the following reaction, in which direction, left or right, will the equilibrium shift if the following changes are made?
    13·1 answer
  • Which term describes a change in velocity?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!