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
RUDIKE [14]
3 years ago
7

Help me answer this chemistry question. thank you!

Chemistry
1 answer:
gayaneshka [121]3 years ago
6 0

Answer:

krypton,radon, and silicon

You might be interested in
Which of the following summertime activities consists solely of physical change?
Evgen [1.6K]
A: making s sandcastle. This is because water and sand is only a mixture, so they do not react with each other. All the rest include chemical reactions!
5 0
4 years ago
According to boyle’s law, when the pressure on a gas in an enclosed container increases, the volume of that gas
Doss [256]
Decreases. Hope I helped
3 0
3 years ago
Why is the increasing amount of carbon dioxide being taken up by the oceans a cause for concern?
Anna007 [38]

Answer;

-More carbon dioxide causes an increase in carbonic acid (H2CO3) which leads to a decrease in the concentration of carbonate ion (CO32-).

Explanation;

-Carbon dioxide is added to the atmosphere whenever people burn fossil fuels. Oceans play an important role in keeping the Earth's carbon cycle in balance.

-As the amount of carbon dioxide in the atmosphere increases, the oceans absorb a lot of it. In the ocean, carbon dioxide reacts with seawater to form carbonic acid which causes the acidity of seawater to increase.

-As long as we keep putting extra carbon dioxide in the atmosphere, the acidity of the ocean will continue to increase. The effect is that; Increasing acidity makes it harder for corals to build skeletons and for shellfish to build the shells they need for protection. Corals are particularly important because they provide homes for many other sea creatures.

7 0
3 years ago
Copper2 nitrate > nitrogen dioxide + copper2 oxide+ oxygen
erastovalidia [21]
Cu(NO3)2>NO2+CuO+O2 balanced: 2Cu(NO3)2=4NO2+2CuO+O2
3 0
3 years ago
A 35.66g sample of copper is heated using 600j of energy. if the original temperature of the copper is 85C what is its final tem
ira [324]

This problem is providing the mass, energy, initial temperature and specific heat of a sample of copper that is required to calculate the final temperature.

Thus, we recall the general heat equation:

Q=mC(T_f-T_i)\\

Which has to be solved for the final temperature, T_f as follows:

T_f=T_i+\frac{Q}{mC}

Finally, we plug in the numbers to obtain:

T_f=85\°C+\frac{600J}{35.66g*0.38\frac{J}{g\°C} } \\\\T_f=129.3\°C

However, this result is not given in the choices.

Learn more:

  • brainly.com/question/14383794
8 0
2 years ago
Other questions:
  • For an atom’s electrons, how many energy sublevels are present in the principal energy level n = 4?
    10·2 answers
  • The rate of product formation by an enzyme-catalyzed reaction would be increased by
    12·1 answer
  • Why do convection currents form
    8·1 answer
  • Rocks and sand are nonliving .all organisms are
    10·1 answer
  • N2 +3h2 2nh3 how many moles of hydrogen are needed to completely react with two moles of nitrogen?
    10·1 answer
  • A laboratory technician needs to prepare 500 milliliters of a 2 M solution of sodium hydroxide (NaOH) in a flask. The flask has
    8·1 answer
  • How many moles of carbon are there in a 0.70 g (3.5 carat) diamond?
    13·1 answer
  • What is the molarity of 5.39 grams of CaCl2 dissolved in 609 mL of water? (molar mass = 110.98 g/mol)
    5·1 answer
  • What correctly shows the stages of mitosis in order
    8·1 answer
  • If an atom has 15 protons, 14 neutrons, and 18 electrons, what is the atom's electrical charge?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!