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
Lapatulllka [165]
3 years ago
8

What is a level 7-8 grade science fair project I can do?

Chemistry
1 answer:
Delicious77 [7]3 years ago
4 0
Making an atom or a virus structure
You might be interested in
Citric acid (h3c6h5o7) is a product of the fermentation of sucrose (c12h22o11) in air. determine the mass of citric acid produce
Alex
2.50 x 2/1 = 5 mol of Citric Acid
5 x (3+72+5+112) = 960g of Citric Acid


Answer: 960g of Citric Acid

6 0
3 years ago
Read 2 more answers
I need more help with science again
Sloan [31]
Membranes are barriers and “gatekeepers”, they only let certain molecules pass through them.

they also transport nutrients to the cell
5 0
3 years ago
Read 2 more answers
A runner travels at a constant speed of 4 m/s. What happens to the velocity of the runner when the runner changes direction?
ANTONII [103]

Answer:

4m/s in the direction of the turn

Explanation:

The velocity of an object is the rate of change of its position with respect to a frame of reference.

Assuming the runner stays the same speed as he turns, his velocity will be 4m/s in the speed he turns.

5 0
3 years ago
How many molecules of H2O are equivalent to 98.2 g of H2O
GREYUIT [131]

Answer:

Demo Mole Quantities

58.5g NaCl(mol/58.5g)(6.02 x 1023/mol) = 6.02 x 1023 Na

+

Cl21 pre-1982 pennies (after 1982 pennies are mostly zinc with copper coating)

63.5g Cu( mol/ 63.5g)(6.02 x 1023/mol) = 6.02 x 1023 Cu

19.0g Al (mol/27.0g)(6.02 x 1023/mol) = 4.24 x 1023 Al

Explanation:

3 0
3 years ago
Cereal is an example of what type of matter?
Elena L [17]
A heterogeneous mixture since you can separate the ingredients that make it up.
5 0
3 years ago
Read 2 more answers
Other questions:
  • How many elements are there?
    13·2 answers
  • Identify the limiting reactant in the reaction of hydrogen and ethylene (c2h4) to form c2h6, of 4.40 g of h2 and 10.5 g of c2h4
    6·1 answer
  • 6) What is located in the nucleus?
    8·1 answer
  • How much potassium chlorate is needed to produce 20.0 mL<br> ofoxygen gas at 670 mm Hg and 293 K?
    8·1 answer
  • You are performing an experiment that uses 114Ag. 113Ag is radioactive, decays by beta-- emission and has a half-life of 21 minu
    9·1 answer
  • If a container were to have 24 molecules of C5H12 and 24 molecules of O2 initially, how many total molecules (reactants plus pro
    6·1 answer
  • What is a medium?
    6·2 answers
  • Doc. No.
    7·1 answer
  • What do we call genes
    10·1 answer
  • What would u add if the soil is too basic~~ ?​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!