Part B Now that we have put a coefficient of 3 in front of CaSO4, what coefficient should go in front of CaCl2 to balance calciu
1 answer:
Answer: The coefficient must be 3.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The number of atoms of each element has to be same on both sides, thus the balanced chemical reaction will be:
Thus a coefficient of 3 should go in front of to balance calcium (Ca).
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Answer: 17 (a) 360,000 ms 18 (a) 0.245 s
(b) 4.800 kg (b) 500 cm
(c) 560.0 dm (c) 68.00 m
(d) 72,000 mg (d) 0.025 Mg
<u>Explanation:</u>
Use the following table. Note the direction you are going to:
Right means move decimal to the right. Left means move decimal to the left.
**********************************************************************************************
17(a) 360 s to ms o → → →o
Move the decimal 3 places to the right --> 360_ _ _.
Fill in the blanks with zeroes --> 360,000
(b) 4800 g to kg o← ← ← o
Move the decimal 3 places to the left --> 4.<u>8</u> <u>0</u> <u>0</u>
<u />
(c) 5600 dm to m o← o
Move the decimal 1 place to the left --> 560. <u>0</u>
<u />
(d) 72 g to mg o → → →o
Move the decimal 3 places to the right --> 72 _ _ _.
Fill in the blanks with zeroes --> 72,000
***********************************************************************************************
18 (a) 245 ms to s o← ← ← o
Move the decimal 3 places to the left --> . <u>2</u> <u>4</u> <u>5</u>
(b) 5 m to cm o → →o
Move the decimal 2 places to the right --> 5 _ _.
Fill in the blanks with zeroes --> 500
(c) 6800 cm to m o← ← o
Move the decimal 2 places to the left --> 68. <u>0</u> <u>0 </u>
<u />
(d) 25 kg to Mg o← ← ← o
Move the decimal 3 places to the left --> . _ 25
Fill in the blanks with zeroes --> .025