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IgorLugansk [536]
2 years ago
10

Laws differ from theories because laws do not provide

Chemistry
1 answer:
o-na [289]2 years ago
7 0

Answer:

C. An explanation

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A solid turning to a liquid is called..?
sergey [27]

Answer:

A physical change.

Explanation:

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Why is this temperature scale (Celsius) different and/or better than the other temperature scales?
Vesna [10]

Answer:

They are used because of preference or convenience, not necessity. These scales came about historically when there were no standards to calibrate a thermometer against. The Fahrenheit scale used the temperature of the coldest thing then known for its zero, which was salty ice.13-Oct-2019

8 0
2 years ago
2. 7.5 g of potassium react with water to produce potassium hydroxide and hydrogen gas. Calculate the mass of potassium hydroxid
luda_lava [24]

Answer:

10.7 g of KOH

Explanation:

First of all, we determine the reaction:

2K (s) + 2H₂O(l) → H₂(g) + 2KOH(aq)

We convert the mass of K, to moles → 7.5 g . mol/39.1 g = 0.192 moles

Ratio is 2:2, so the moles I have of K must produce the same moles of KOH. In this case, the produces moles of KOH are 0.192 moles.

We convert the moles to mass, to finish the answer:

0.192 mol . 56.1g /1mol = 10.7 g of KOH

8 0
3 years ago
By the way...... what do those symbols for the elements have in common (for number 7-11): Pb, Au, Cu, Hg, Na ? *
Keith_Richards [23]

Answer:

those have symbols for their Latin or Greek name

Explanation:

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What is Science?
DENIUS [597]

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jesus

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Jesus is always the answer LOL

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