All categories

3 years ago

Match each phase of the scientific method with the statement that describes it.

Chemistry

1 answer:

Lelu [443]3 years ago

4 0

3-B
4-C
5-A
6-A
7-C
8-B
9-A
10-B

You might be interested in

Things only girls would understand

weeeeeb [17]

Answer:

shampoooooooooooooo?

Explanation:

7 0

3 years ago

Read 2 more answers

How does the density of one penny compare with the density of two pennies

Mice21 [21]

Density increases.......

6 0

3 years ago

In the summer of 2016, the city of Columbus Dublin Road Water Treatment plan exceeded the regulatory level of nitrate, which is

Verizon [17]

Answer:

a) $10 mg NO_3^-/L$

b) $1.61*10^{-4}mol NO_3^-/L$

c) $2.26 mg N/L$

Carbon: $C=26.64 \frac{mg C}{L}$

Explanation:

Nitrate

First of all, is important to know that:

$1 ppm=1 mg/L$

a) 10 ppm of nitrate ( $NO_3^-$ ) is equal to $10 mg NO_3^-/L$

b) The molecular weight of nitrate is $62 g NO_3^-/mol$

$10 mg NO_3^-/L=0.01 g NO_3^-/L$

$\frac{0.01 g NO_3^-/L}{62 g NO_3^-/mol}=1.61*10^{-4} mol NO_3^-/L$

c) Nitrate has 14 mg of N per 62 mg of NO3

$10 mg NO_3^-/L*\frac{14 mg N}{62 mg NO_3^-}=2.26 mg N/L$

Carbon

Carbonate has 12 mg of C per 60 mg of $CO_3^{-2}$

Bicarbonate has 12 mg of C per 61 mg of $HCO_3^{-}$

$C=24 \frac{mg CO_3^{-2}}{L}*\frac{12 mg C}{60 mg CO_3^{-2}}+111 \frac{mg HCO_3^{-}}{L}*\frac{12 mg C}{61 mg HCO_3^{-}}$

$C=26.64 \frac{mg C}{L}$

8 0

3 years ago

Please help me with this one

MrRa [10]

Answer: D-Nonmetals bond together to form a covalent compound

6 0

3 years ago

How many molecules are there in 7.27 miles of ammonia?

NemiM [27]

Hey There!

To solve this question remember that 1 mole of ammonia is equal to 17G of ammonia.

Using that, we first multiply 17 by 7 = 24

Then we multiply 7 by .27 = 1.89

Finally, taking those and adding them together gives you the answer...

25.89 grams :)

Have a great day, I hope I helped.

+ Brainliest & Five stars are always appreciated

4 0

3 years ago

Read 2 more answers