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4 years ago

The term for a solution with a low ph number is such as lemon juice or vinegar is

1 answer:

4 0

Answer is: acid.
An acid is a molecule or ion capable of donating proton or hydrogen ion H⁺.
pH (potential of hydrogen) is a numeric scale used to specify the acidity or basicity an aqueous solution.
pH number of lemon juice (citric acid) and vinegar (acetic acid CH₃COOH) is below seven (pH<7). For bases pH is greater than seven.

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Question number 10 & 11, answer please and thank you

nika2105 [10]

Answer:

molarity = moles of solution/liters of solution

molarity = 1 mole/2 liters

molarity = 0.5 M

molarity = 50 moles/200 kg

molarity = 0.25 M

Explanation:

3 0

4 years ago

Which of the following is NOT an example of pseudoscience?

asambeis [7]

B. Healing crystals
Because it cannot be proven.

3 0

3 years ago

Read 2 more answers

A teacher is discussing several scenarios in the topic of gas law s. Which of the following scenarios will the initial pressure

sukhopar [10]

The scenario whereby the initial pressure is equal to the final pressure is : ( A ) A balloon filled with air is heated from 300k to 600k, causing it to expand and double in size.

<h3>Gay Lussac's law </h3>

Gay Lussac's law states that at constant pressure, the volume of gas is directly proportional to the change in temperature. i.e. V ∝ T. From scenario 1 the change in temperature from 300 K to 600 K shows a 100% increase in temperature which corresponds with the expansion and size doubling of the volume of gas.

Hence we can conclude that The scenario whereby the initial pressure is equal to the final pressure is : ( A ) A balloon filled with air is heated from 300k to 600k, causing it to expand and double in size.

Learn more about Gay Lussac's law : brainly.com/question/24691513

8 0

2 years ago

A boy with pneumonia has lungs with a volume of 1.9 L that fill with 0.080 mol of air when he inhales. When he exhales, his lung

mariarad [96]

Answer: The number of moles of gas remaining in the lungs is 0.063 moles

Explanation:

The relationship of number of moles and volume at constant temperature and pressure was given by Avogadro's law. This law states that volume is directly proportional to number of moles at constant temperature and pressure.

The equation used to calculate number of moles is given by:

$\frac{V_1}{n_1}=\frac{V_2}{n_2}$

where,

$V_1\text{ and }n_1$ are the initial volume and number of moles

$V_2\text{ and }n_2$ are the final volume and number of moles

We are given:

$V-1=1.9L\\n_1=0.080mol\\V_2=1.5L\\n_2=?$

Putting values in above equation, we get:

$\frac{1.9}{0.080}=\frac{1.5}{n_2}\\\\n_2=\frac{1.5\times 0.080}{1.9}=0.063$

Hence, the number of moles of gas remaining in the lungs is 0.063 moles

8 0

4 years ago

Calculate the value deltaG°

atroni [7]

Answer:

ΔG=ΔG0+RTlnQ where Q is the ratio of concentrations (or activities) of the products divided by the reactants. Under standard conditions Q=1 and ΔG=ΔG0 . Under equilibrium conditions, Q=K and ΔG=0 so ΔG0=−RTlnK . Then calculate the ΔH and ΔS for the reaction and the rest of the procedure is unchanged.

Explanation:

4 0

3 years ago