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
kakasveta [241]
3 years ago
11

Science fair projects for 7th grade ideas?

Chemistry
2 answers:
allsm [11]3 years ago
8 0
Try the classic volcano project, grab construction paper and special liquid and some paint and etc and u good to go or u can try the twister idea of where u connect two soda cans and pour it out to make a twister tornado.
klio [65]3 years ago
4 0
Volcano         you make the volcano with baking soda and vinegera          
You might be interested in
What is the molarity of ethanol c2h5oh in an aqueous solution that is 36.4% ethanol by mass
meriva

Answer:

the answer is A

Explanation:

8 0
3 years ago
Which item does not depend on rare earth elements?
Alisiya [41]

Answer:

Perrous magnets

Explanation:

6 0
2 years ago
The following is an example of what type of chemical reaction?
Svetlanka [38]
This is a D. combustion reaction

That is because you add O2 which is necessary for a combustion, while the results are CO2 and water. What you are missing is a ---> after the 2O2 (g)
4 0
3 years ago
Molarity of 0.50 mol sugar in 270 mL of solution.
EastWind [94]
<h3>Answer:</h3>

1.85 M

<h3>Explanation:</h3>

<u>We are given;</u>

  • Number of moles as 0.50 mol
  • Volume of the solution is 270 ml

But, 1000 mL = 1 L

  • Thus, volume of the solution is 0.27 L

We are required to calculate the molarity of the solution;

  • Molarity refers to the concentration of a solution in moles per liter.
  • It is calculated by dividing number of moles with the volume.

Molarity = Moles ÷ Volume

In this case;

Molarity = 0.50 moles ÷ 0.27 L

             = 1.85 Mol/L or 1.85 M

Therefore, molarity of the solution is 1.85 M

5 0
3 years ago
The electron configuration of an element is shown below.
g100num [7]

Answer:

helium family or neon family

Explanation:

you can use p

5 0
3 years ago
Other questions:
  • How did the gold foil experiment lead to the discovery of the nucleus?
    10·1 answer
  • When a H atom and a Cl atom react to form a HCl molecule,
    9·1 answer
  • How to prepare 100 mL of lead nitrate Pb(NO3)2 ?
    10·1 answer
  • The neutralization of H3PO4 with KOH is exothermic. 55.0 mL of 0.213 M H3PO4 is mixed with 55.0 mL of 0.640 M KOH initially at 2
    12·1 answer
  • When iron metal reacts with sulfuric acid, it produces iron (III) sulfate and hydrogen gas. Balance the equation: Fe + H2SO4 → F
    11·1 answer
  • How is life on Earth affected by Earth's revolution around the Sun
    8·1 answer
  • If 0.750 L of argon at 1.50 atm and 177°C and 0.235 L of sulfur dioxide at 95.0 kPa and 63.0°C are added to a 1.00-L flask and t
    8·1 answer
  • 3 C2H2(g) → C6H6(g) What is the standard enthalphy change ΔHo, for the reaction represented above? (ΔHof of C2H2(g) is 230 kJ mo
    12·1 answer
  • 4. How many Carbon atoms are present in 1.00 mole of methane, CH,?
    9·1 answer
  • Zinc Sulfide reacts with oxygen according to the reaction:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!