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Rainbow [258]
3 years ago
11

Please help me i dont understand this!

Chemistry
1 answer:
lidiya [134]3 years ago
7 0
Salutations!

<span>Some examples of geological processes are -----

Geological processes are process that modify that natural features of Earth. It can be done in anyway such as; destructively, erosion, mechanical etc. From your following options, volcanoes, earth, and waves are some of the examples of geological process.

Hope I helped :D</span>
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How many moles of water are produced when 6.0 moles of hydrogen gas react with 2.5 moles of oxygen gas?
sasho [114]

Answer:

2.5 mole O2 should react (2 * 2.5) = 5.0 mole H2 but there is 6.0 mole H2. H2 remain in excess. O2 is the limiting reactant. mole of H2O formed = 2 * 2.5 = 5.0 mole.

5 0
3 years ago
How many grams of nano3 are needed to prepare 100 grams of a 15.0 % by mass nano3 solution? will give brainliest
Greeley [361]

Answer:

Calculate the mass percent of a potassium nitrate solution when 15.0 g KNO3 is dissolved in 250 g

of water.

2. Calculate the mass percent of a sodium nitrate solution when 150.0 g NaNO3 is dissolved in 500 mL

of water. Hint: 1 mL water = 1 g water

3. Calculate the weight of table salt needed to make 670 grams of a 4.00% solution.

4. How many grams of solute are in 2,200 grams of a 7.00% solution?

5. How many grams of sodium chloride are needed to prepare 6,000 grams of a 20% solution?

Mass Percent = Grams of Solute

Grams of Solution X 100%

100%

Grams of Solute = Grams of Solution X Mass Percent

= 26.8 grams NaCl

= 670 grams X 4.00%

100%

100%

Grams of Solute = Grams of Solution X Mass Percent

= 154 grams solute

= 2,200 grams X 7.00%

100%

100%

Grams of Solute = Grams of Solution X Mass Percent

= 1,200 grams NaCl

= 6,000 grams X 20.0%

100%

Explanation:

5 0
4 years ago
Calculate the number of gams of nitrogen dioxide that are produced from 4 moles of nitric oxide
amm1812

Answer: 184 g of nitrogen dioxide that are produced from 4 moles of nitric oxide

Explanation:

The balanced chemical reaction is:

2NO(g)+O_2(g)\rightarrow 2NO_2(g)  

According to stoichiometry :

2 moles of NO produce = 2 moles of NO_2

Thus 4 moles of NO will require=\frac{2}{2}\times 4=4moles  of NO_2

Mass of NO_2=moles\times {\text {Molar mass}}=4moles\times 46g/mol=184g

Thus 184 g of nitrogen dioxide that are produced from 4 moles of nitric oxide

8 0
3 years ago
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