Are the following Mineral or Ore?

Answers

Answer 1

Answer:

1.Mineral

2.Ore

Explanation:

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HELP PLEASE!!!!!Given that oxygen-16 and oxygen-18 both have an atomic number of 8, how many electrons, protons, and neutrons do these oxygen atoms contain?A) These oxygen configurations contain the same number of subatomic particles - 8 electrons, 6 protons and 10 neutrons. B) Any oxygen atom contains 8 electrons and 9 neutrons but these vary in the number of protons - 8 and 10 respectively. C) The oxygen allotropes contain 8 electrons but each contains a different number of neutrons and protons - 8 and 10 respectively. D) Both oxygen isotopes contain 8 electrons and 8 protons but each contains a different number of neutrons - 8 and 10 respectively.Copper has been used in electrical wiring for two hundred years. Identify which molecular level property does not contribute to copper's usefulness a material for wiring. A) high ductility B) high malleability C) high conductivity D) high crystallinityDescribe how light is emitted from an atom.A) As protons absorb energy they travel from the nucleus through the atom emitting light along the way. B) The light is emitted when energy from sunlight is absorbed by the atom to excite a neutron into a higher level. C) When the nucleus absorbs sunlight, photons are energized and move to a higher energy level and are then released. D) Light is emitted from an atom as an electron falls from an excited state to the ground state releasing a photon.During chemistry, Dan mixes two clear, colorless solution and mixing them produces a yellow precipitate in a clear, colorless final solution as shown by the chemical equation. Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq)What physical evidence indicates that there has been a chemical reaction?A) The solution changes color. B) Precipitate formation occurs. C) The beaker changes temperature. D) Gas bubbles form during the reaction.
Describe the sequence of events in the formation of an evaporite

If solving for the slope of the best fit line it is a good choice to choose the points on the line.True
False

Answers

I think that statement is trueThe best fit line is a straight line that best represents the data on a scatter plot.This line may pass through some of the points, none of the points, or all of the points, choosing the points on the line will make it esier to find the best fit line

The correct answer its True

hope it helps

can i get brainlyest please??

Starting with 100 grams of uranium-238, after one half life has gone by, how many grams of uranium-238 will remain?A._12.5 grams
B._25 grams
C._50 grams
D._100 grams

Answers

Answer : The correct option is, (C) 50 grams

Solution :

Formula used :

$a=(a_o)/(2^n)$

where,

a = amount of reactant left after n-half lives = ?

$a_o$ = Initial amount of the reactant = 100 g

n = number of half lives = 1

Putting values in above equation, we get:

$a=(100)/(2^1)$

$a=50g$

Therefore, the amount of uranium-238 remain will be, 50 g

Answer C, 50 grams.
This is because a half life is the time it takes for a sample of an unstable isotope to spontaneously so that half of the original sample remains

Why do chloride ions move to the positive electrode?

Answers

Because chloride ions have a negative charge, so are attracted to the positive electrode

Biotechnology can be both useful and potentially destructive. Choose one example of biotechnology and identify whether it has had a positive or negative effect on society. Explain your answer.

Answers

I am not going to give you a full research report, but one example is DNA fingerprinting via gel electrophoresis. This has definitely had a positive effect on society, as it makes forensics a much more certain and just process. Gel electrophoresis can be used to separate and arrange DNA strands in order of length. You can then compare this arrangement to determine whether or not it matches another DNA arrangement. It has a very high accuracy rating, so you can be almost certain that if you have two electrophoresis results that look identical, that both DNA samples belong to the same person. This is compelling evidence that can either acquit or condemn suspects with certainty.

A mining crew extracted two different types of minerals from the underground. Then, they transferred the same amount of energy into both minerals. Why did mineral A change while mineral B stayed the same? Explain what happened to the molecules of both minerals.

Answers

The plausible reason for the change in mineral A will be the lower activation energy than the transferred energy.

The addition of energy will result in the change in the minerals if the activation energy is exceeded.

The minerals found in mining A and B have transferred the energy. The minimum amount of energy required to do the transition in the atoms in the activation energy.

The possible reason for the change in the mineral A will be the lower activation energy for the mineral A. The mineral B does not change because the activation energy of mineral B is higher as compared to mineral A.

For more information, refer to the link:

brainly.com/question/22034013

Answer: Mineral A changed because Molecular energy transferred is equal or greater than than its Activation energy

Mineral B didn't change because Molecular energy transferred is less than its Activation energy.

Explanation:

The molecules of Mineral A has been disturbed by the addition of energy causing a change and the entropy is increased. The Molecules of Mineral B has not been disturbed because the residual energy has not been overcome and therefore yielding no visible change

According to the wave-mechanical model of the atom, an orbital is a region of the most probable location of(1) an alpha particle (3) an electron
(2) a gamma ray (4) a proton

Answers

with the advancement of science, electrons seemed to possess both particle and wave nature.
this is called the dual nature where electrons have both particle and wave properties.
earlier it was believed that electrons used to orbit around the nucleus in orbits.
Later it was found that electrons do not have fixed positions, the exact momentum and position of electrons cannot be determined at the same time
therefore the wave mechanical model was introduced which introduced orbitals.

Orbitals are spaces in which electrons are most likely to be found. These regions have the highest probability of an electron being found here.

correct answer is 3) an electron

That would be (3) an electron

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