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s2008m [1.1K]
3 years ago
10

A man is 72 inches tall, what is his height in meters? round to three significant figures.​

Chemistry
2 answers:
Artist 52 [7]3 years ago
5 0

Answer:

1.829 meters is the answer

Explanation:

maria [59]3 years ago
5 0
1.829 meters is the answer explanation: none
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Are elecronegativity values higher for metals than nonmetals.
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3 years ago
Hard water often contains dissolved Ca2+ and Mg2+ ions. One way to soften water is to add phosphates. The phosphate ion forms in
katrin2010 [14]

Answer:

22.4269 grams of sodium phosphate must be added to 1.4 L of this solution to completely eliminate the hard water ions

Explanation:

We will first write the balanced equation for this scenario

3 CaCl2 + 2 Na3PO4 ----> 6 NaCl + Ca3 (PO4)2

3 Mg(NO3)2 + 2 Na3PO4 -----> 6 NaNO3 + Mg3 (PO4)2

The ratio here for both calcium chloride and magnesium nitrate is 3:2

The number of moles of each compound is equal to

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Using the mole ratio of 3:2, convert each to moles of sodium phosphate.

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0.1302 mole of CaCl2 is equal to 0.0868 Na3PO4

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