Ask question

Ask question

All categories

2 years ago

6

A city's water supply is fluoridated by adding NaF. The desired concen- tration of F– is 1.6 ppm. How many mg of NaF should you

add per gallon of treated water

1 answer:

Akimi4 [234]2 years ago

6 0

Answer:

mmmmmmmmmmmmmmmmmmmm

You might be interested in

What rules should you follow when adding and subtracting ?

wariber [46]

Adding and subtracting with scientific notation may require more care, because the rule for adding and subtracting exponential expressions is that the expressions must havelike terms<span>. Remember that to be </span>like terms<span>, two expressions must have exactly the same base numbers to exactly the same powers. Thinking about decimal arithmetic, the requirement that we have the same powers makes sense, because that guarantees that all of the place values are lined up properly.</span>

5 0

3 years ago

Read 2 more answers

Look up the active ingredient in baking soda. Write a molecular and net ionic equation when that active ingredient is mixed with

Volgvan

Answer:

The active ingredients in baking soda (NaHCO3) are

$Na^+$ and $HCO3^-$

when Baking soda reacts with Acetic acid

Molecular equation

NaHCO3(aq) + CH3COOH(aq) → Na(CH3COO)(aq) + CO2(g) +H2O(l)

Ionic equation

$Na^+ + HCO3^- + CH3COOH$ → $Na^+ + CH3COO^- +CO2 + H2O$

as $Na^+$ is present on both sides so it will cancel out and the net ionic equation will be

$HCO3^-(aq) + CH3COOH(aq)$ → $CH3COO^-(aq) + CO2(g) + H2O(l)$

6 0

3 years ago

You burn a log on a fire. You use fire to warm yourself and help you see to read a book. What energy transformation is taking pl

Vinvika [58]

Answer:

heat energy to keep you warm and light energy to be able to read your book

Explanation:

5 0

3 years ago

Convert the condensed structures to line angle formulas: 1. CH3CH2CH(CH3)CH2CH3 8. CH:COCH 9. CH3CH2OCH3 2. CH3CH2CH(CH2CH3)CH(C

kumpel [21]

Answer:

Attached in the photo.

Explanation:

Hello,

The answers in the attached photo. Just three things:

- In the second point a parenthesis is missing to properly understand the molecule (after the oxygen), nevertheless, I assumed it was an ether.

- In the sixth point, there's a missing hydrogen for it to be an ether as well.

- In the tenth point the second parenthesis is not clear, it seems there's a missing subscript, nevertheless I draw it assuming complete octates.

Best regards.

3 0

3 years ago

If you experience a painful bee sting, there is formic acid at work. which type of organic compound is responsible for your suff

QveST [7]

The Answer is B - <span>carboxylic acid </span>

3 0

3 years ago

Read 2 more answers