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Mars2501 [29]
3 years ago
10

In a laboratory, you scratch an unknown mineral on a piece of unglazed porcelain. Which property are you trying to determine?

Chemistry
2 answers:
Lina20 [59]3 years ago
7 0

Answer:

streak

Explanation:

You rub a mineral across an unglazed porcelain plate to determine the streak. The hematite shown here has a red-brown streak. Streak is the color of the powder of a mineral. To do a streak test, you scrape the mineral across an unglazed porcelain plate

Vikki [24]3 years ago
4 0
You are tying to determine the color
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Definition of isotopes
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If 155 grams of potassium (K) reacts with 122 grams of potassium nitrate (KNO3), what is the limiting reagent?
GenaCL600 [577]
K:

m=155g
M=39g/mol

n = 155g / 39g/mol ≈ 3,97mol

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m=122g
M=101g/mol

n = 122g/101g/mol = 1,21mol

2K          +            10KNO₃  ⇒  6K₂O + N₂
2mol        :            10mol
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5 0
3 years ago
A compound is 80.0% carbon and 20.0% hydrogen by mass. assume you have a 100.-g sample of this compound. the molar mass of the c
ch4aika [34]
Basis of the calculation: 100g
 
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For Hydrogen:
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ANSWER: C2H6

 
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3 years ago
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Zanzabum
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3 years ago
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