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soldi70 [24.7K]
3 years ago
14

Rachel was riding her bike at a velocity of 9 m/s to the east. Her velocity

Chemistry
1 answer:
Solnce55 [7]3 years ago
3 0

Answer:-3m/s east

Explanation:that’s right

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Wind and moving water provide ______________________ energy. chemical
irina1246 [14]
Moving air has kinetic energy. Anything that has kinetic energy has the ability to do work. Wind turbines change the kinetic energy of the wind into electrical energy. This form of energy production is also free of pollution

Credits to ck-12
4 0
3 years ago
A compound is 21.6% Mg, 21.4% C, and 57.0% O. What is the empirical formula of the compound? ​
nignag [31]

Answer:

Compound x = MgC_{2}O_{4}

Explanation:

Let the compound be x

Assuming we have a 100g of compound x

<u>Given the following data;</u>

Magnesium, Mg = 21.6% = 21.6g

Carbon, C = 21.4% = 21.4g

Oxygen, O = 57.0% = 57.0g

Now, we would find the amount of moles for each element.

Atomic mass of Mg = 24.30g

Atomic mass of C = 12.01g

Atomic mass of O = 16.00g

<u>Amount of moles for Mg;</u>

21.6*(1/24.30) = 0.89mol

<u>Amount of moles for C;</u>

21.4*(1/12.01) = 1.78mol

<u>Amount of moles for O;</u>

57.0*(1/16.00) = 3.56mol

We then divide by the smallest to find the ratio;

0.89/0.89 = 1 Mol of Mg

1.78/0.89 = 2 Mol of C

3.56/0.89 = 4 Mol of O

Therefore, the ratio of Mg, C and O is 1:2:4.

Compound x = MgC_{2}O_{4}

Hence, the empirical formula of the compound is MgC_{2}O_{4}

7 0
3 years ago
For the reaction 2h2+o2&gt;h20, how many grams of water are produced from 70 grams of hydrogen
KonstantinChe [14]

630g

Explanation:

firstly the equation has to be balanced. 2H2+o2>2H2o.

finding the mole of hydrogen?

mole = 70/2 which is equal to 35 mole of hydrogen.

35 mole of hydrogen is equal to the mole of water.

finding the mass of water=?

35=mass/18

mass= 35*18=630g of water

3 0
3 years ago
How many moles of Br atoms are in .5 mol of Br2 molecules
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Br2 5mol take a 10 mol Br atoms mol
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3 years ago
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Which symbol represents a salt?<br> O CaCl2<br> O C6H12O6<br> O C2H2<br> O 02
leva [86]

A) CaCl2

Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl2. It is a colorless crystalline solid at room temperature, highly soluble in water.

7 0
3 years ago
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