H2SO3
Spell out the full name of the compound.

Answers

Answer 1
Answer: sulfurous acid or sulphurous acid
Answer 2
Answer: The full name of this compound/ acid is:
Sulfurous acid or Sulphorous acid

... Remember SO3 is a ployatomic ion ending in -ite..
.... I hope it helps!

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Convert 1.50μm2 to square meters

Answers

1 micro meter = 10^(-6)  meters
1 μm ^2 = 1 μm*1μm = 10^(-6) *10^(-6) =  10^(-12) meters

1.5 μm^2 = 1.5 * 10^(-12) meters

μm^2 is a unit for surface. First you want to convert μm to meters which is unit for length and if you multiply units for length you get unit for surface.

What do you think will happen if you pinch your arm after you stub your toe?

Answers

It would distract the pain in your toe. That's all I got

it would distract the pain

In an oxidation-reduction reaction, the total number of electrons lost is(1) equal to the total number of electrons gained
(2) equal to the total number of protons gained
(3) less than the total number of electrons gained
(4) less than the total number of protons gained

Answers

Answer is: (1) equal to the total number of electrons gained.

In oxido-reduction reaction, at least one element lose and one element gain electrons.

Oxidation reaction is increasing of oxidation number of atom, because element lost electrons in chemical reaction.

Reduction is lowering oxidation number because atom gain electrons.

For example, in oxidation-reduction reaction: 2H₂ + O₂ → 2H₂O; hydrogen is oxidized (change oxidation number from 0 to +1) and oxygen i s reduced (change oxidation number from 0 to -2).

Hydrogen lost .four electrons anf oxygen gain four electrons

In redox reactions, there is no net loss or gain of electrons, so the answer is (1) equal to the total number of electrons gained

The atomic mass of an element is calculated using the(1) atomic number and the ratios of its naturally occurring isotopes(2) atomic number and the half-lives of each of its isotopes(3) masses and the ratios of its naturally occurring isotopes(4) masses and the half-lives of each of its isotopes

Answers

The atomic mass of an element is calculated using its masses and the ratios of its naturally occurring isotopes. The answer is number 3.  The rest of the choices do not answer the question above.

Answer:

#3

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Which of the following best explains why the atomic mass is a fraction between 72 and 73? Options: A. The atomic mass is the weighted average of all the naturally occurring isotopes of the element. B. The atomic mass is determined by the number of protons in the nucleus. C. The atomic mass is a whole number, but it appears as a fraction due to rounding in the periodic table. D. The atomic mass is a decimal number because it represents the total number of electrons in the atom.

Answers

Answer:

The atomic mass is the weighted average of all the naturally occurring isotopes of the element.

Explanation:

A. The atomic mass is the weighted average of all the naturally occurring isotopes of the element.  YES.  Since there can be several different isotopes of the same element, the weighted average is used in the periodic table to reflect the likely composition of a random sample.

B. The atomic mass is determined by the number of protons in the nucleus.   NO

C. The atomic mass is a whole number, but it appears as a fraction due to rounding in the periodic table.   NO.

D. The atomic mass is a decimal number because it represents the total number of electrons in the atom.  NO.

Luminosity is the amount of energy emitted by a star each second. Stars radiate light over a broad range of frequencies in the electromagnetic spectrum, from the low energy radio waves to high energy gamma rays. Energy emitted from stars is the result of

Answers

Energy emitted from stars is the result of fusion.

What is fusion?

Fusion is a process where two or more atoms combined together to form a new molecule.

As in the question it is stated that Luminosity is the amount of energy emitted by a star each second is true, because of the fusion of hydrogen atoms to helium atom and high amount of energy is released in the form of light. And Stars radiate light over a broad range of frequencies in the electromagnetic spectrum, from the low energy radio waves to high energy gamma rays.

Hence, due to fusion energy is emitted from stars in the luminous.

To learn more about fusion, visit below link:
brainly.com/question/890176

Luminosity is the amount of energy emitted by a star each second. Stars radiate light over a broad range of frequencies in the electromagnetic spectrum, from the low energy radio waves to high energy gamma rays. Energy emitted from stars is the result of fusion of gases within its core