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musickatia [10]
3 years ago
13

Which body system includes the lungs?m​

Chemistry
1 answer:
Zanzabum3 years ago
4 0

Answer: <u>The respiratory system </u>

Explanation: It includes the nose, mouth, throat, voice box, windpipe, and lungs. Air enters the respiratory system through the nose or the mouth.

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The normal pH of surface sea water is _____. 5.0 6.0 7.0 9.0
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The PH level of the surface of the water is 9.0 
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8 0
3 years ago
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If you change the temperature of a gas but keep the volume the same, how does the pressure change?
mariarad [96]
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8 0
3 years ago
A compound or material formed by a chemical reaction is known as the ____ of that reaction.​
Olegator [25]

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6 0
2 years ago
How many moles of HCl are needed to completely react with 50.0 mL of 0.250 M NaOH solution? Group of answer choices 1.25 × 10-2
Hitman42 [59]

Answer:

n_{HCl|=1.25\times 10^{-2}\ moles

Explanation:

We know that , the reaction between NaOH and HCl is given as

HCL+NaOH\rightarrow NaCl+H_2O

Form the above reaction we can say that

Number of moles of HCl =Number of moles of NaOH

n_{HCl} =n_{NaOH}

Therefore

n_{HCl}=\frac{0.25\times 50}{1000}\ moles

n_{HCl|=12.5\times 10^{-3}\ moles

n_{HCl|=1.25\times 10^{-2}\ moles

Therefore the numbers of moles needed of HCl wil be 1.25\times 10^{-2}\ moles

6 0
3 years ago
WILL GIVE BRAINLIEST
nata0808 [166]

Answer:

Density= 0.4412g/cm^3

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When finding density the formula is mass divided by volume. So the mass of 15g divided by 34cm^3 equals to the density of 0.4412g/cm^3.

6 0
3 years ago
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