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victus00 [196]
3 years ago
10

If you could please summarise the information in the two screenshots I'll give you brainiest

Chemistry
1 answer:
aleksley [76]3 years ago
4 0

Answer:

Explanation:

A 'mole' is the mass of substance that contains 1 Avogadro's Number of particles of that substance. This is equal to 1 formula weight of the substance. That is when thinking 'moles', think 'how many formula weights are there in the given mass?'

Example.

Given 100 grams of water (H₂O => formula weight = 18 grams/mole) ...

Ask 'how many 18's are there in 100?' => number of moles of H₂O... => 100/18 = 5.555... moles H₂O

This is the same for any substance => how many formula weights are there in the GIVEN mass? Always => #moles.

moles = mass(g)/formula wt(g·mol⁻¹)

You might be interested in
How many moles of hypomanganous acid. H3 MnO4, are contained in 22.912 g?
gregori [183]

Answer:

0.188mol

Explanation:

Using the formula;

mole = mass/molar mass

Molar mass of hypomanganous acid. (H3MnO4) = 1(3) + 55 + 16(4)

= 3 + 55 + 64

= 122g/mol

According to this question, there are 22.912g of H3MnO4

mole = 22.912g ÷ 122g/mol

mole = 0.188mol

6 0
3 years ago
What object has a mass of 10 grams and a volume of 2 mL
Elena-2011 [213]

Answer:

Destiny = 5 g/ml

Explanation:

The formula for density is d=

Knowing this, divide your mass by volume:

10 g / 2 ml = 5 g/ml

Final answer:

Destiny = 5 g/ml

3 0
2 years ago
What volume of 2.0 M HCl in mL will neutralize 25.0 mL of 1.00 M KOH?
MakcuM [25]
CaVa=CbVb
2xV=1X25
V=25/2
V=12.5ML
3 0
3 years ago
Determine the mass of each sample 1.55 kmol sulfur trioxide
xxMikexx [17]

Explanation:

Given parameters:

Number of moles of the sulfur trioxide = 1.55kmol = 1.55 x 10³mole

Unknown:

Mass of the sulfur trioxide = ?

Solution:

To solve for the mass of the sample of sulfur trioxide:

  •  Find the molar mass of the compound i.e SO₃

          atomic mass of S = 32g

                                    O = 16g

              molar mass = 32 + 3(16) = 80g/mol

  • Use the formula below:

           mass of SO₃ = number of moles x molar mass

           mass of SO₃ =  1.55 x 10³ x 80 = 124000g or 124kg

Learn more:

mole calculation  brainly.com/question/13064292

#learnwithBrainly

3 0
3 years ago
PLEASE HELP
svp [43]

Because more than one substance was released (following a color change signifying a chemical reaction), the sample was indeed, a compound.
7 0
3 years ago
Read 2 more answers
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