2 years ago

Hii can someone help me pls this is the last question

Chemistry

1 answer:

lara31 [8.8K]2 years ago

8 0

Answer:

B. 126

Explanation:

the scale is 1 to 42 so the scale would be:

3 cm:x cm

3 * 42 = 126 cm

You might be interested in

Phytoplankton are microscopic photosynthesizing organisms that typically live in the upper layers of the ocean. What trophic lev

Sever21 [200]

I think they are primary producers, as they produce biomass from inorganic compounds (CO2)

8 0

3 years ago

Read 2 more answers

Oxygen, with an atomic number of 8, is a neutral atom and would have ___________ electrons in the first electron shell and _____

motikmotik

2 in the first shell and 6 in the second

8 0

3 years ago

Use the equation:

Serga [27]

Answer:

polymerization reaction

4 0

3 years ago

Find the number of moles of argon in 364 grams of argon.

serg [7]

Answer:D. 9.1 mole Ar

Explanation:

364 g Ar x 1 mole Ar / 40 g Ar

= 9.1 moles Ar

3 0

3 years ago

What is the pH if the [H+] concentration is 3 x10^-13

Shkiper50 [21]

Answer:

pH = 12.52

Explanation:

Given that,

The [H+] concentration is $3\times 10^{-13}$ .

We need to find its pH.

We know that, the definition of pH is as follows :

$pH=-log[H^+]$

Put all the values,

$pH=-log[3\times 10^{-13}]\\\\pH=12.52$

So, the pH is 12.52.

6 0

3 years ago