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andreev551 [17]
3 years ago
7

Match the best method to separate the parts of each mixture....

Chemistry
2 answers:
fgiga [73]3 years ago
7 0

A. Boil the water. Collect the solid. - 6. Sugar water.

B. Dissolve salt in water. Pour through filter paper and collect the sand. - 1. Sand and salt.

C. Remove iron filings with magnet. - 4. Sand and iron filings.

D. Use a screen to sift and separate the big pieces from smaller pieces. - 3. Sand and gravel.

E. Pick out the bigger particles. - 2. Gravel and rocks.

F. Add water and float one type of particle. - 5. Sand and wood shavings.

mojhsa [17]3 years ago
6 0
Sand and gravel i think
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State one reason why sodium 24 isotope is rarely
meriva
The half-life of sodium-24 is equal 14,959 hours.
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3 years ago
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A chemist has a sample of hydrated Li2SiF6 and it weighs 0.4813 grams. He heats it strongly to drive off the water of hydration,
Aleksandr-060686 [28]

Answer:

percentage of water = 18.76%

Explanation:

A chemist has a sample of hydrated Li2SiF6  and it weighs 0.4813 grams.

The overall weight of the compound is 0.4813 grams.

weight of hydrated sample = 0.4813 grams.

weight of anhydrous compound = 0.391 grams

percentage weight of water = mass of water/mass of the hydrated compound × 100

mass of water = mass of hydrated compound - mass of anhydrous compound

mass of water = 0.4813 - 0.391  = 0.0903 grams.

percentage of water = 0.0903/0.4813 × 100

percentage of water = 9.03/0.4813

percentage of water = 18.761687097

percentage of water = 18.76%

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4 years ago
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What is Calcium sulfate+ iron give you and is sulfuric acid H2SO4
pickupchik [31]
A strong acid? calcium sulfate?
5 0
3 years ago
6K + B2O3 → 3K2O + 2B
atroni [7]

Answer:

104.84 moles

Explanation:

Given data:

Moles of Boron produced = ?

Mass of B₂O₃ = 3650 g

Solution:

Chemical equation:

6K + B₂O₃    →    3K₂O + 2B

Number of moles of B₂O₃:

Number of moles = mass/ molar mass

Number of moles = 3650 g/ 69.63 g/mol

Number of moles = 52.42 mol

Now we will compare the moles of  B₂O₃ with B from balance chemical equation:

                 B₂O₃          :          B

                    1              :          2

                52.42         :        2×52.42 = 104.84

Thus from 3650 g of  B₂O₃  104.84 moles of boron will produced.

6 0
4 years ago
Q2. Name, constituent of petroleum (Petrochemicals) which is used for following purposes.
finlep [7]

The constituents of petroleum that are used for the following purposes are as follows:

  • To make candles ----- Paraffin wax
  • A solvent for dry cleaning ----- Petrol
  • For surfacing roads ----- Bitumen
  • Jet engine fuel ----- Kerosene
  • For lubrication ----- Lubricating oil.

<h3>What are the constituents of petroleum?</h3>

The constituents of petroleum are LPG, bitumen, paraffin wax, lubricating oil, kerosene, diesel, etc. These compounds are a mixture of hydrocarbons.

Therefore, each constituent of petroleum that is used for the following purposes is mentioned above with proper names.

To learn more about constituents of petroleum, refer to the link:

brainly.com/question/17023299

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7 0
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