Answer:
hydrogen (H), nitogen (N), oxygen (O), fluorine (F), chlorine (Cl), helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn)
Explanation: found this online, it's best to remember them.
MH₂ = 2×mH = 2×1g = 2 g/mol
For the basic solution:
11.2 = -log[H+]
[H+] = 6.31 x 10⁻¹²
For the acidic solution:
2.4 = -log[H+]
[H+] = 3.98 x 10⁻³
The difference:
3.98 x 10⁻³ - 6.31 x 10⁻¹²
≈ 4.0 x 10⁻³
The answer is B
The correct answer is a liter.
The SI or the International System of Units illustrates seven measuring units as a fundamental set from which all the other SI units can be obtained. The SI base units and their physical quantities are the kilogram for mass, the meter for measurement of length, the ampere for electric current, the second for time, the candela for luminous intensity, the Kelvin for temperature, and the mole for the amount of substance.
<h3><u>Answer;</u></h3>
Physical property
<h3><u>Explanation;</u></h3>
- A physical property is an aspect of matter that can be observed or measured without changing it. Examples of physical properties include color, shape, size, molecular weight and volume.
- A chemical property on the other hand may only be observed by changing the chemical identity of a substance, that includes whether it can undergo a certain chemical change
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