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yaroslaw [1]
3 years ago
15

Why is the presence of hard water considered a negative thing

Chemistry
1 answer:
sveta [45]3 years ago
3 0
Hard water contains certain minerals that can be rougher on the skin and hair.
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HSiCl3+H2O=H10Si10O15+HCl
tiny-mole [99]

10 HSiCl3+ 15 H2O→H10Si10O15+ 30 HCl

Explanation:

Step 1: To make Si equal on both sides. put 10 in front of HSiCl3

10 HSiCl3+ H2O →H10Si10O15+ HCl

Step 2: By putting 30 in front of HCl, Cl can be balanced

10 HSiCl3+ H2O →H10Si10O15+ 30 HCl

Step 3: Now, balance O by putting 15 in front of H2O

10 HSiCl3+ 15 H2O→H10Si10O15+ 30 HCl

Hence the balanced equation is:

10 HSiCl3+ 15 H2O→H10Si10O15+ 30 HCl

5 0
4 years ago
Help please please please please
Rom4ik [11]

Answer:

D. 18.7 grams

Explanation:

The coefficients are the key.

Create a proportion with them, and the molar mass, and then solve for x:

\frac{2}{3}  =  \frac{x}{28}  \\ 3x = 2(28) \\ 3x = 56 \\ x = 18.666... = 18.7

7 0
4 years ago
How can weak acids and weak bases cause pH stress to cells?
telo118 [61]

Answer:

b

Explanation:

If a cell has transporters that are not well regulated, weak acids or weak bases can accumulate inside the cells and cause stress.

3 0
3 years ago
Which best describes sodium chloride (NaCl)?
OverLord2011 [107]

Answer: NaCl is an ionic compound

Explanation: Sodium Chloride is formed from Na+ and Cl- ions.

It is soluble in water, it has crystalline structure, it has high melting point and

It is insulator as solid form. Water solution leads current.

4 0
3 years ago
Explain what is meant by water quality​
katovenus [111]

Answer:

a measure of the suitability of water for a particular use based on selected physical, chemical, and biological characteristics.

6 0
2 years ago
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