A plant grows three inches in a month. Why is this a physical change?
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because the plant got taller than it used to be, and you can physically see it
Related Questions
Which of the following substances can be classified as a salt?A.Sodium Chloride (NaCl)B.Vinegar (CH3COOH)C.Baking Soda (NaHCO3)D.Bleach (NaClO)
Is melting cheese a physical or chemical change it's for science
Will you Please answer 20!
Is gold one of the transition elements
Answers
Both are the unit of mass.
1 short ton = 2000 pounds
1 short ton = 907.18474 kg
Thus, 3.72 short ton =
= 3,374.727 kg
Now, convert kg to mg:
1 kg = 10,00,000 mg
Therefore,
3.72 short tons =
=
Hence, 3.72 short tons =
Answers
The concentration of the hydrogen dissociated into the solution gives the pH. When the solution has a pH of 5.6 then, the concentration of H⁺ is 2.51 × 10⁻⁶.
What is pH?
The estimation of the acidic and alkalinity of the solution based on the amount of the dissociated hydrogen or the hydronium ions in the solution gives the pH.
It is measured with the help of the pH scale that indicates the range of the acids and bases along with neutral. The formula of the pH includes the negative logarithm of the hydrogen ion concentration. pH is calculated as,
pH = - log [H⁺]
Given,
pH = 5.6
Substituting values above the concentration are calculated as,
pH = - log [H⁺]
5.6 = -log [H⁺]
[H⁺] = 10⁻⁵°⁶ ≈ 0.0000025
= 2.51 × 10⁻⁶
Therefore, the hydrogen concentration in solution with pH 5.6 is equivalent to 2.51 × 10⁻⁶.
Learn more about pH here:
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Answer:
Hi there!
The answer to this question is 2.5118X10^-6
Explanation:
The formula to solve this is 10^-pH
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Answer : The new volume of the air is, 6.83 L
Explanation :
Charles' Law : It states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
where,
are the initial volume and temperature of the gas.
are the final volume and temperature of the gas.
We are given:
Putting values in above equation, we get:
Therefore, the new volume of the air is, 6.83 L
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We are required to explain the meaning of volume and mention the instrument used to measure liquid volume.
- Volume refers to the unit of three-dimensional measure of space that comprises of a length, a width and a height. It is measured in units of cubic centimeters(cm³), cubic inches(in³) or cubic feet(ft³).
- An instrument used to measure liquid volume is called a graduated cylinder or a buret.
Since, volume comprises of length, width and height, then the formula used to calculate the volume of a solid object is length multiplied by width multiplied by height.
Therefore,
Volume of a solid object = Length × Width × Height
Read more:
Answer:
Volume is the amount of space that a substance occupies. A graduated cylinder is used to measure liquid volume. The formula used to calculate the volume of a solid object is = L x W x H
Explanation:
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Hope this helps