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3 years ago

16

The respiratory system should remove which of the following from your body? A. carbon monoxide B. carbon dioxide C. oxygen D. ox

ygen bioxide

2 answers:

Ulleksa [173]3 years ago

6 0

The answer is carbon dioxide

omeli [17]3 years ago

6 0

<span>B. carbon dioxide is correct </span>

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A student obtains the following data: Mass of empty, dry graduated cylinder: 21.577 g Volume added of NaCl solution: 4.602 mL Ma

klasskru [66]

<u>Answer:</u> The density of NaCl solution is 3.930 g/mL

<u>Explanation:</u>

We are given:

Mass of cylinder, $m_1$ = 21.577 g

Mass of NaCl and cylinder combined, M = 39.664 g

Mass of NaCl, $m_2$ = $(M-m_1)=(39.664-21.577)g=18.087g$

To calculate density of a substance, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

We are given:

Mass of NaCl = 18.087 g

Volume of NaCl solution = 4.602 mL

Putting values in above equation, we get:

$\text{Density of NaCl}=\frac{18.087g}{4.602mL}\\\\\text{Density of NaCl}=3.930g/mL$

Hence, the density of NaCl solution is 3.930 g/mL

7 0

2 years ago

If an isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons, its mass number is_______.

melamori03 [73]

Answer:

mass number = 18

Explanation:

The mass number is the total amount of protons and neutrons in an atom. Therefore, if there are 8 protons and 10 neutrons, the mass number is 18 (8 + 10 = 18).

4 0

1 year ago

How did modern scientists experiment with Van Gogh's paints to determine their chemical reactions?

Andrei [34K]

Answer:

I think the answer is A - they used X-ray analysis.

Explanation:

5 0

3 years ago

Read 2 more answers

FORENSIC SCIENCE HELP

Annette [7]

That is correct c
Explanation

7 0

2 years ago

If the density of

Soloha48 [4]

It’s the doubles I think not sure let me know if it’s true

8 0

3 years ago