Which of the following statements is not true about acid rain? a. Acid rain will erode marble statues
b. Acid rain can change the pH of lakes and streams
c. Acid rain can be formed from carbon dioxide
d. Acid rain creates holes in the ozone layer
e. Acid rain can be formed from the gases SO₂ and SO₃

Answers

Answer 1

Answer: d is incorrect because of the absurdity , And the ozone layer doesn't produce acid rain

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Which of the following is true in regard to ions?

Answers

Here are some of the facts about ions:
An ion is a charged molecule or atom. It is positively when there are more protons than electrons. You call it positive ion.
It is negatively charged when there are more electrons than protons. It is called anion.

14. Which of the following is true in regard to ions?

A. Ions can only carry positive charges.

B. An ionized atom has a number of protons that is unequal to the number of electrons.

C. A cation will hold a positive charge if it gains one or more electrons.

D. Losing one or more electrons will turn an atom into an anion.

Answer is B

(took the test C is wrong)

The gray balls represent _____ and have a neutral charge. protons neutrons electrons

Answers

Protons have a positive charge.Electrons have a negative charge.Neutrons have no (neutral) charge.

Answer: The correct answer is neutrons.

Explanation:

There are 3 subatomic particles that are present in an atom. They are: protons, electrons and neutrons.

Protons carry positive charge and are found inside the nucleus of an atom.

Electrons carry negative charge and are found around the nucleus in the orbits.

Neutrons does not carry any charge and are found inside the nucleus of an atom.

Hence, the correct answer is neutrons.

GUYS HELP ME PLEASE. MY TEACHER IS GONNA KILL ME IF I DONT SOLVE THIS RIGHT. Write the election configuration (H, Al, S,CI, Ni)

Answers

Explanation:

1s 2s 2p

1s 2s 2p1s2 2s1

1s 2s 2p1s2 2s1 2 1 1

1s 2s 2p1s2 2s1 2 1 11s2 2s2

SELECT ALL THAT APPLYat STP conditions, 0.25 moles of CO2(g), H2(g), NH3(g)
1. Will contain the same number of molecules
2. Will contain the same number of atoms
3. Will occupy the same volume
4. Will have the same g.f.w

Answers

at STP conditions, 0.25 moles of CO2(g), H2(g), NH3(g)

The answers are:
1. Will contain the same number of molecules
3. Will occupy the same volume

Answer: The correct answer is Option 1 and Option 3.

Explanation:

We are given:

0.25 moles of $CO_2,H_2\text{ and }NH_3$

STP conditions states that 1 mole of a gas occupies 22.4 L of volume.

The volume occupied by all the gases at STP will be $0.25* 22.4=5.6L$

According to mole concept: 1 mole of a compound contains $6.022* 10^(23)$ number of molecules or 1 mole of an element contains $6.022* 10^(23)$ number of atoms.

We know that the given gases are compounds. Thus, all the three gases will have $0.25* 6.022* 10^(23)=1.5055* 10^(23)$ number of molecules.

Hence, the correct answer is Option 1 and Option 3.

Which element must an organic compound contain? bromine

chlorine

iodine

carbon

Answers

Answer: D.) Carbon

Explanation: Carbon is an organic compound, any of a large class of chemical compounds in which one or more atoms of carbon are contently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen.

The two ends of a solenoid act likea. electrons.
b. a compass needle.
c. a circuit.
d. poles.

Answers

Answer:

d. poles

Explanation:

Magnetic field created by a solenoid:

The magnetic field created by a solenoid is increased by increasing the intensity of the current, by increasing the number of turns and by introducing a piece of iron inside the coil (electromagnet).

Solenoid coil with air core constructed with bare copper wire spirally wound and protected with insulating varnish. If we supply this coil with electric current using any source of electromotive force, such as a battery, for example, the flow of the current that will circulate through the coil will lead to the appearance of a magnetic field of a certain intensity around it.

Solenoid coil to which a metal core such as iron (Fe) has been introduced. If we compare the previous coil with air core with the coil of this illustration, we will see that now the lines of magnetic force are much more intensified as they have become an electromagnet.

D) The Answer Is Poles

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A sample of carbon-12 has a mass of 6.00 g. How many atoms of carbon-12 are in the sample?

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