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viktelen [127]
3 years ago
6

How many hydrogen ions are in 1 liter of stomach acid? (Hint: Avogadro’s number). Show your work and remember to put your answer

in regular number form (NOT scientific notation).
Chemistry
1 answer:
stiks02 [169]3 years ago
5 0

Answer:

1 200 000 000 000 000 000 000 000 H⁺ ions

Step-by-step explanation:

Assume that the concentration of H⁺ ions in stomach ions is <em>2.0 mol·L⁻¹.</em>

Then, we have 2.0 mol of H⁺ ions

There are 6.02 × 10²³ H⁺ ions in 1 mol.

2.0 mol = 2.0 × 6.022 × 10²³/1

             = 1.2 × 10²⁴ H⁺ ions

             = 1 200 000 000 000 000 000 000 000 H⁺ ions

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Ripening is a _______________ and spoiling is a ______________.
Mazyrski [523]

Answer:

A

Explanation:

The answer to this question is A. Both ripening and spoiling are chemical reactions.

Spoiling is a chemical reaction because spoiled food has bad smell and taste and it changes colour too.

Ripening of fruits is a chemical change. For example the colour could change as well as the texture.

7 0
1 year ago
Read 2 more answers
Air at 293 K and 750 mm Hg pressure has a relative humidity of 80%. What is its percent humidity? The vapour pressure of water a
Mekhanik [1.2K]

Answer : The correct option is, (c) 79.62

Explanation :

The formula used for percent humidity is:

\text{Percent humidity}=\text{Relative humidity}\times \frac{p-p^o_v}{p-p_v}\times 100   ..........(1)

The formula used for relative humidity is:

\text{Relative humidity}=\frac{p_v}{p^o_v}       ...........(2)

where,

p_v = partial pressure of water vapor

p^o_v = vapor pressure of water

p = total pressure

First we have to calculate the partial pressure of water vapor by using equation 2.

Given:

p=750mmHg

p^o_v=17.5mmHg

Relative humidity = 80 % = 0.80

Now put all the given values in equation 2, we get:

0.80=\frac{p_v}{17.5mmHg}

p_v=14mmHg

Now we have to calculate the percent humidity by using equation 1.

\text{Percent humidity}=0.80\times \frac{750-17.5}{750-14}\times 100

\text{Percent humidity}=79.62\%

Therefore, the percent humidity is 79.62 %

4 0
3 years ago
An independent variable is what you___in an experiment. (There are no selections so please just answer it)
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Answer:

Don’t change, keep the same

Explanation:

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Based on the following reactants:
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