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
Eddi Din [679]
3 years ago
14

The atomic masses of any two elements contain the same number of

Chemistry
1 answer:
den301095 [7]3 years ago
8 0

Answer:

They contain of atoms

Explanation:

That's because atomic weights or masses of each atom of each element are proportional to each other, the same number of atoms of each element will give masses that are also proportional to each other. If you start with 20 oxygen atoms, you will need 40 hydrogen atoms to make the water and you will get 20 molecules of water.

You might be interested in
Name the fundamental unit involved in the derived unit joule?​
tangare [24]

Answer:

Energy

Explanation:

7 0
2 years ago
If an acid/base dissociates completely in water what type of substance is it? Does this mean the acid/base is dangerous?
hram777 [196]

Answer:

1 strong acid

2 yes they are dangerous

Explanation:

Since nearly all of it is dissociated in water, it is called a strong acid.

2 yes Concentrated strong acids can cause severe and painful burns. The pain is due in part to the formation of a protein layer, which resists further penetration of the acid

3 0
3 years ago
how many grams of calcium sulfate are produced from 10 grams of calcium nitrate and how many grams of calcium sulfate are produc
AlekseyPX

Answer:  8.30 g of calcium sulfate are produced from 10 grams of lithium sulfate.

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} Ca(NO_3)_2=\frac{10g}{164g/mol}=0.061moles

\text{Moles of} Li_2SO_4=\frac{10g}{110g/mol}=0.091moles

Ca(NO_3)_2+Li_2SO_4\rightarrow 2LiNO_3+CaSO_4  

According to stoichiometry :

1 mole of Ca(NO_3)_2 require = 1 mole of Li_2SO_4

Thus 0.061 moles of Ca(NO_3)_2 will require=\frac{1}{1}\times 0.061=0.061moles  of Li_2SO_4

Thus Ca(NO_3)_2 is the limiting reagent as it limits the formation of product and Li_2SO_4 is the excess reagent.

As 1 mole of Ca(NO_3)_2 give = 1 mole of CaSO_4

Thus 0.061 moles of Ca(NO_3)_2 give =\frac{1}{1}\times 0.061=0.061moles  of CaSO_4

Mass of CaSO_4=moles\times {\text {Molar mass}}=0.061moles\times 136g/mol=8.30g

Thus 8.30 g of calcium sulfate are produced from 10 grams of lithium sulfate.

6 0
3 years ago
Which of the following describes an irregular galaxy?
sertanlavr [38]

Answer:

D

Explanation:

They don't have define shape nor structure...so a random group of stars and no shape can form a irregular galaxy

5 0
2 years ago
THE CONSTANT MOVING OF AND HELP THE TEMPERATURES AROUND THE EARTH REMAIN ABOUT THE SAME AVERAGE
nika2105 [10]

New analysis through 2014 shows that temperature is once again rising at about the same pace as it did over the second half of the 20 th century. PRESS RELEASE. Using the data that were available at the time (through 2012), the last climate report from the Intergovernmental Panel on Climate Change concluded that there had been no statistically significant increase in global surface temperature

(I hope this helps you!)

8 0
3 years ago
Other questions:
  • Which of the following statements is true with regard to transverse and longitudinal waves?
    15·2 answers
  • Please help due tomorrow
    15·1 answer
  • Gaseous ethane ch3ch3 will react with gaseous oxygen o2 to produce gaseous carbon dioxide co2 and gaseous water h2o . suppose 21
    13·1 answer
  • How many ATOMS are in 3.5g of Na?
    11·1 answer
  • Consider 0.022 grams of H2(g) produced by the following chemical reaction, 2 HCl(aq) + Mg(s) → MgCl2(aq) + H2(g) Determine if ea
    13·1 answer
  • As discussed in class, water plays an important biological role and therefore knowing the properties of water plays a role in un
    6·2 answers
  • Complete the following table.
    10·2 answers
  • What is the highest occupied molecular orbital in the O2 molecule?
    5·1 answer
  • Mitosis is an example of what
    7·1 answer
  • How many atoms are in each of the following molecules:A. CO2B. N2C. CHCOOH
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!