3 years ago

What is a toxic chemical?

1 answer:

8 0

Answer:any substance which may be harmful to the environment or hazardous to your health if inhaled, ingested or absorbed through the skin.

Explanation:

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Which is the largest number? O A. 2.2 x 108 O B. 2.9 O C. 2.5 x 10-5 D. 2.8 x 106

natali 33 [55]

Answer:

2.2 x 10⁸

Explanation:

We are to find the largest number from the given set of numbers:

2.2 x 10⁸

2.9

2.5 x 10⁻⁵

2.8 x 10⁶

The largest number is the first one; 2.2 x 10⁸ ;

2.2 x 100 000 000

the other numbers are far lesser than this number;

3 0

2 years ago

How many total atoms are there in 69.1 g of ammonia (NH3)?

lozanna [386]

Answer:

answers is - 3.568

I think this correct answer

5 0

2 years ago

How many moles of copper are needed to react with sulfur to produce 2.9 moles of copper (I) sulfide

dalvyx [7]

Answer:

5.8 moles of copper are needed to react with sulfur to produce 2.9 moles of copper (I) sulfide.

Explanation:

$2Cu+S\rightarrow Cu_2S$

Moles of copper(I) sufide = 2.9 mol

According to reaction, 1 mole of copper(I) sulfide is obtained from 2 moles of copper, then 2.9 moles of copper(I) sulfide will be obtained from :

$\frac{2}{1}\times 2.9 mol=5.8 mol$ copper

5.8 moles of copper are needed to react with sulfur to produce 2.9 moles of copper (I) sulfide.

4 0

2 years ago

a normal hemoglobin concentration in the blood is 15g/100ml of blood how many kilogram of hemoglobin are in a person who has 5.5

jok3333 [9.3K]

Using stoichiometry:

5.5 L of blood x (1000 mL/1L) x (15 g/100 mL) x (1 kg/1000 g) = 0.825 kg

4 0

3 years ago

Read 2 more answers

Should the United States continue to develop/use nuclear power? Why or why not?

Vlad [161]

Answer:

Yes

Explanation:

because they should

5 0

2 years ago