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3 years ago

List some good ideas for Science Fair for Sixth Graders

1 answer:

4 0

You could test how high the soda shoots up when you drop mentos in different types of soda. i did it when i was in 6th grade

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Which does not show earths past environment?<br><br> Please hurry I need this :((

ANTONII [103]

There’s no options!!

7 0

2 years ago

Welding is an industrial process that is used to join pieces of metal. A certain mixture of gases used in welding is composed of

GarryVolchara [31]

The given question is incomplete. The complete question is :

Welding is an industrial process that is used to join pieces of metal. A certain mixture of gases used in welding is composed of carbon dioxide and argon. The partial pressure of carbon dioxide is 0.080 atm and the partial pressure of argon is 0.24 atm. What is the total pressure of the mixture.

Answer: 0.32 atm

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

$p_{total}=p_{CO_2}+p_{Ar}$

Given : $p_{total}$ =total pressure of gases = ?

$p_{CO_2}$ = partial pressure of carbon dioxide = 0.080 atm

$p_{Ar}$ = partial pressure of argon = 0.24 atm

putting in the values we get:

$p_{total}=0.080atm+0.24atm$

$p_{total}=0.32atm$

Thus the total pressure of the gases is 0.32 atm

8 0

2 years ago

Solids and liquids have both mass and volume, but a gas has only mass.

SCORPION-xisa [38]

Cool whats the question ma dude?

6 0

2 years ago

What biological macromolecule is made up of monomers like the one shown below? NH2-RHC - COOH. A. Lipid B. Nucleic Acid C. Prote

ololo11 [35]

The biological macromolecule that is made of those monomers is C. Protein.

3 0

3 years ago

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Ammonia is produced by the following reaction. 3H2(g) + N2(g) ---> 2NH3(g) When 7.00 g of hydrogen react with 70.0 g of nitro

ycow [4]

To determine the limiting reactant, we first calculate the number of moles of the reactant.

7.00 g H2 ( 1 mol / 2.02 g ) = 3.47 mol H2
70.00 g N2 ( 1 mol / 28.02 g) = 2.50 mol N2

From the balanced reaction, we see that there is a 3 is to 1 ratio of the reactants. So, for every 3 moles of H2 we need 1 mole of N2. Given the amount of reactant, for 2.50 moles of N2 we need 7.5 moles of H2 which obviously we have a lesser amount. Hydrogen is the limiting reactant.

6 0

3 years ago

Read 2 more answers