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melamori03 [73]
3 years ago
10

Hiw to separate and measure a mixture of iron fillings, sugar, and salt

Chemistry
1 answer:
Alecsey [184]3 years ago
3 0
Add water to mixture to dissolve sugar then filter. sugared water will be the filtrate while the salt & iron fillings will be the residue. use magnet to attract iron fillings and remaining will be salt.
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an atom has 70 protons, 70 electrons, and 99 neutrons. what is the mass number? group of answer choices
Blizzard [7]

Answer:

169

Explanation:

protons+neutrons=atomic mass

70+99=169

6 0
3 years ago
When Michelle's blood was tested, the chloride level was 0.45g/dL. what is this value in milliequivalents per liter
sleet_krkn [62]

Answer: 127 m

Explanation:

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5 0
4 years ago
How many dm3 of oxygen at STP would be required to react completely with 38.8g of propane? (3 marks)
11Alexandr11 [23.1K]

98.56 dm^3 of oxygen at STP would be required to react completely with 38.8g of propane.

<u>Given that :</u>

molar mass of propane = 44 g/mol

mass of propane = 38.8 g

∴ Moles present in 38.8 g of propane = \frac{38.8}{44} = 0.88 mole

<u>applying rule of balanced equations </u>

1 mole of propane = 5 moles of oxygen

0.88 mole of propane =  5 * 0.88 = 4.4 moles of oxygen

Note : volume of 1 mole of oxygen at STP = 22.4 dm^3

∴Total volume of oxygen required at STP = 22.4 * 4.4 = 98.56 dm^3

Hence we can conclude that the volume of oxygen at STP required to react completely 98.56 dm^3

Learn more : brainly.com/question/16998374

5 0
2 years ago
Plz helppppppppppppppppp
exis [7]

Brass is a homogeneous mixture.

In the liquid state, the copper and zinc formed a solution.

They did not separate from each other when the brass solidified.

Thus, brass is a solid solution.

5 0
3 years ago
What is joules? plz help​
emmainna [20.7K]
That’s the SI unit of energy or work
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