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
jek_recluse [69]
3 years ago
13

Multiple choice. Please help.

Chemistry
1 answer:
Ludmilka [50]3 years ago
7 0

Answer:

7. B

8. B

9. A

10. A

11. Increases

Again..I hope it helps.✌

You might be interested in
Which one is denser? question 2 options: the earth (a solid object) the sun, which is about 300,000 times more massive than the
tankabanditka [31]
The Earth, Mars or Jupiter should be denser than the Sun. Density is defined by mass and volume — components of object or matter. Although the sun is huge, it’s component is made up of mostly gas (hydrogen and helium). While Earth, though smaller than the Sun, contains heavier elements such as iron, sulfur, rocks, sediments, granite, basalt and water. Mars (composed of rocks and nutrients) and Jupiter (contains gases and compounds) as well are denser when compared to the Sun’s density. Referencing to our basic understanding of matter: solid and liquid should be heavier than gas.
6 0
3 years ago
We dissolve 93 grams of sodium sulfate (Na2SO4) in 20 grams of water. What is the percent by mass of sodium sulfate in this solu
dlinn [17]
It should be for the total solution of 93 plus 20 grams which is 113 grams so 93 divided by 113 grams comes to 82.3% sodium sulfate and this can be checked by multiplying 113 grams by 0.823 which results in 93 grams of sodium sulphate. 
4 0
3 years ago
Gold is used for making ornaments give reason <br><br>​
Lena [83]

Answer:

they are nice to look at....

Explanation:

Gold does not tarnish, rust or corrode. Due to its wonderful qualities and its luster, gold is considered the most important metal in jewellery making. As pure gold is too soft for everyday wear, it is alloyed with a mixture of metals in order to make the gold harder, so it can be used for jewellery.

brainliest pls....

8 0
3 years ago
Read 2 more answers
A sample of a compound is analyzed and found to contain 0.420 g nitrogen, 0.480g oxygen, 0.540 g carbon and 0.135 g hydrogen. Wh
RSB [31]

Answer:

C2H5NO

Explanation:

constituent elements                    N              O               C                H

Mass composition                     0.420        0.480         0.540         0.135

mole ratio                                   0.42/14       0.48/16      0.54/12         0.135/1

                                              = 0.03                0.03             0.045         0.135

dividing by the smallest           0.03/0.03     0.03/0.03    0.045/0.03 0.135/0.03

ratio                                      =        1                      1                1.5                 4.5

                                             =        1                      1                  2                   5

EMPERICAL FORMULA = C2H5NO

7 0
3 years ago
I need help with this
Lelechka [254]

Answer:

The answer is its equal to the volume of its container.

--------------------------------------------------------------------------------

I hope this helps! :)

7 0
3 years ago
Other questions:
  • • Carbon Dioxide is a greenhouse gas because it traps heat in the Earth’s surface.
    12·1 answer
  • The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a
    14·1 answer
  • What is a male function
    7·1 answer
  • Consider the reaction 2X2Y+Z2⇌2X2YZ which has a rate law of rate= k[X2Y][Z2] Select a possible mechanism for the reaction. View
    14·1 answer
  • Which set is an example of an element, a compound, and a mixture?
    6·1 answer
  • What are some of the ways that people can Reduce their use of fossil fuels?
    14·2 answers
  • Why are weather satellites useful in areas that are affected by hurricanes?
    5·2 answers
  • Identify how energy changed form so it could be use in each example.
    13·1 answer
  • How can a change to another population could affect births and deaths in the parrot population.
    10·1 answer
  • How to recover ballpoint ink washed off from a paper?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!