Is Light a Wave or a Particle?

Answers

Answer 1

Answer: Light is both a wave and a particle. Good luck!

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What is the term for a fine grained soil deposited by the wind

Answers

I think it is called a loess. Please correct me if I am wrong.

An element X has two isotopes. X–15 has 7 protons and 8 neutrons. Determine the atomic number and mass number of the second isotope, which has 10 neutrons in its nucleus. a. atomic number = 8; mass number = 9
b. atomic number = 8; mass number = 17
c. atomic number = 7; mass number = 17
d. atomic number = 7; mass number = 15

Answers

c. Atomic number = 7; mass number = 17

The atomic number of the first isotope is 7.

Isotopes of the same element have the same atomic number, so the atomic number of the second isotope must also be 7.

Mass number = no. of protons + no. of neutrons, or

A = p + n

∴ A = 7 + 10 = 17

Options “a.” and “b.” have the wrong atomic numbers, and option “d.” has the wrong mass number.

Answer:

Explanation:

How many moles of sodium hydroxide are contained in 65.0 mL of a 2.20 M solution?

Answers

2.20 M means there are 2,20 mol of NaOH in 1 000 mL of solution. We can use this proportion as a conversion factor:

$65\ mL\cdot (2.20\ mol)/(1\ 000\ mL) = \bf 0.143\ mol$

How many moles of NO3 are there in 6.2g

Answers

6.2 divided by the mass number of NO3 is 0.1 moles.

EnergyThe energy needed to remove an electron from an atom is called
electronegative
valence
ejection
ionization

Answers

Answer:

Ionization energy

Explanation:

Think of it this way: ions are elements with positive or negative charge. If we remove an electron, we give the element a positive charge and it becomes a cation (positive ion). Ionization energy is the energy required to do so - the more electronegative the element, the closer it holds its electrons, the harder they are to remove and the more energy you need.

Ionization energy is your answer I just took the test and passed

If energy can neither be created nor destroyed in a chemical reaction, what can happen to the energy

Answers

while energy cannot be destroyed or created, it can however be transformed into other forms of energy.

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