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Sonja [21]
3 years ago
14

The process by which ice widens and deepends cracks in rock is called

Chemistry
1 answer:
sertanlavr [38]3 years ago
6 0
The process by which ice widens and deepens cracks in rock is called Ice welding. 
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Explanation:

60 times and it matters why they need to in order to divide

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We know that potential energy is the stored energy in an object. In a stretched rubber band or compressed spring that stored ene
Ivan

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gravitational potential energy

Explanation:

i just did it

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How much force does a 35 kg child have that is running through the house at an acceleration of 20 m/s2?
lora16 [44]

Answer:

<em><u>700N</u></em>

Explanation:

<em><u>F</u></em><em><u>=</u></em><em><u>ma</u></em>

<em><u>mass</u></em><em><u>=</u></em><em><u>35</u></em>

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6 0
3 years ago
Predict the mass of iron (III) sulfide produced when 3.0 g of iron filings react completely with 2.5 g of yellow sulfur solid, S
777dan777 [17]
1) Chemical equation

16Fe(s) + 3S8(s) ---> 8Fe2S3

2) Molar ratios:

16 mol Fe : 3 mole S8 : 8 mol Fe2S3

3) Convert masses in grams to number of moles

number of moles = mass in grams / molar mass

a) iron, Fe

mass = 3.0 g
atomic mass = 55.845 g/mol

=> number of moles of Fe = 3.0g / 55.845 g/mol = 0.0537 mol

b) Sulfur, S8

mass = 2.5 g
molar mass = 8*32.065 g/mol = 256.52 g/mol

=> number of moles of S8 = 2.5g / 256.52 g/mol = 0.009746 mol

4) Limiting reactant

Theoretical ratio                           actual ratio

16 mol Fe / 3 mol S8                 0.0537 mol Fe / 0.009746 mol S8

5.33                                               5.50

So, there is a little bit more Fe than the theoretical needed to react all the S8, which means the S8 is the limiting reactant.

5) Calculate the number of moles of iron (III) produced with 2.5 g (0.009746 moles) of S8

3moles S8 / 8 moles Fe2S3 = 0.009746 moles S8 / x

=> x = 0.009746 * 8 / 3 moles Fe2S3 = 0.026 moles Fe2S3

6) Convert 0.026 moles Fe2S3 into grams

mass in grams = number of moles * molar mass

molar mass of Fe2S3 = 207.9 g/mol

mass = 0.026 mol * 207.9 g/mol = 5.40 g

7) Answer: option D)




3 0
3 years ago
Read 2 more answers
If an element has an atomic number of 11 and a mass number of 23, how many protons, neutrons, and electrons does it have
Lostsunrise [7]
Protons = atomic number = 11
electrons = proton number = 11
neutrons = mass number - atomic number = 23-11 = 12
5 0
3 years ago
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