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yulyashka [42]
3 years ago
12

You mix two clear liquids and a colored solid forms at the bottom of the beaker. Do you think this is a chemical change? How can

you know for certain?
Chemistry
1 answer:
UkoKoshka [18]3 years ago
7 0
The answer is yes. A chemical change occurred.
Chemical change is defined as the rearrangement or alteration in the of atoms in one or more substance which result in the formation of a new substance.

In the above, you mixed two clear liquids and the result was a new substance which is a colored solid precipitate at the bottom of the beaker.
This means that changes in the atoms of the two clear liquids occurred leading to the formation of this new solid substance.

This means that chemical change has occurred.

Hope this helps :)
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Svetlanka [38]

Answer:

#2 The writer of "Harrison Bergeron," Kurt Vonnegut, seems to believe that the suppression of individuality within a society...

Question 3 options:

is necessary to maintain order and prevent chaos.

allows the government to unfairly subdue and control its citizens

benefits the general public by creating a more equal society

gives the people more power and influence in the government

#3 Which statement BEST expresses the theme of this short story? Narrow your choices and think carefully!

Question 4 options:

Attempting to achieve complete equality will only result in widespread dissatisfaction and lack of creativity.

The government should encourage everyone to hide their differences in order to have a more peaceful and equal society.

Forcing uniformity on people doesn't result in equality, but rather causes conflict and unhappiness.

People don't realize how important individuality is until they have what makes them different taken away.

PART A: How do the different handicaps contribute to the theme of the story?

Question 5 options:

They show how being unique can be dangerous to yourself and the people around you.

They emphasize how the most ordinary people are often the most valued in a society.

They stress how the work towards achieving total equality won't be easy or pleasant.

They illustrate how much must be done to make the most unique and talented individuals conform.

PART B: Which section from the text best supports the answer to Part A?

Question 6 options:

“He began to think glimmeringly about his abnormal son who was now in jail, about Harrison, but a twenty-one-gun salute in his head stopped that.” (Paragraph 21)

“he tried. That's the big thing. He tried to do the best he could with what God gave him. He should get a nice raise for trying so hard.” (Paragraph 39)

“And it was easy to see that she was the strongest and most graceful of all the dancers, for her handicap bags were as big as those worn by two-hundred pound men.” (Paragraph 40)

“Diana Moon Glampers loaded the gun again. She aimed it at the musicians and told them they had ten seconds to get their handicaps back on.” (Paragraph 79)

Which statement best expresses the central idea in the article "Proposed Treatment to Fix Genetic Diseases Raises Ethical Issues"?

Question 7 options:

Scientists have discovered a way to prevent genetic defects in babies, but some believe genetic development should be left to nature

Scientists have discovered a way to prevent genetic defects in babies, but some worry that the process could be used for great economic gain

Scientists have discovered a way to prevent genetic defects in babies, but the method is against many families’ religions

Scientists have discovered a way to prevent genetic defects in babies, but the process is still very risky

The primary purpose of the article is to...

Question 8 options:

inform

entertain

narrate

persuade

PART A: In paragraph 3 and paragraph 24, what is meant by the phrase “designer babies”?

Question 9 options:

Babies that are bred to be particularly attractive

Babies whose DNA has been altered to enhance a specific positive trait

Babies whose DNA has been altered to avoid disease

The biological children of genetic researchers

PART B: What detail from the text best supports the answer for Part A?

Question 10 options:

“…the research would create an egg with healthy mitochondrial DNA (mtDNA).” (Paragraph 4)

“First of all, the baby would be born with genes from three different people… (Paragraph 18)

“…we're going to allow inheritable genetic changes to make healthier children…” (Paragraph 25)

“…we’re going to allow these kinds of genetic engineering experiments to make children who are more intelligent or more athletic or have perfect pitch…” (Paragraph 25)

The primary purpose of Gavin DeGraw's song "I Don't Want To Be" is to...

Question 11 options:

inform

entertain

narrate

persuade

When DeGraw says, "I'm tired of looking 'round rooms /Wondering what I've got to do /Or who I'm supposed to be" he is saying that...

Question 12 options:

constantly reinventing himself is exhausting, so he has decided to conform to the most commonly accepted standards

conforming is easier than being a unique individual

he is no longer willing to conform to meet the expectations of whomever he is with at any given time

he doesn't care if he has any friends or not

Explanation:

ummm maybe this help

8 0
3 years ago
An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?
Igoryamba

The answer is A. 10.

3 0
3 years ago
Use a reference source to identify five facts about a neutron star or a black hole. Don’t forget to cite your sources.
sleet_krkn [62]

Answer:

Black holes are astronomical objects that have such strong gravity, not even light can escape. Neutron stars are dead stars that are incredibly dense. ... Both objects are cosmological monsters, but black holes are considerably more massive than neutron stars.

Explanation:

3 0
2 years ago
A sample of 23.2 g of nitrogen gas is reacted with
slavikrds [6]

Answer:

1.66 moles.

Explanation:

We'll begin by calculating the number of mole in 23.2 g of nitrogen gas, N2.

This is illustrated below:

Molar mass of N2 = 2x14 = 28 g/mol

Mass of N2 = 23.2 g

Mole of N2 =.?

Mole = mass /Molar mass

Mole of N2 = 23.2/28

Mole of N2 = 0.83 mole

Next, we shall determine the number of mole in 23.2 g of Hydrogen gas, H2.

This is illustrated below:

Molar mass of H2 = 2x1 = 2 g/mol

Mass of H2 = 23.2 g

Mole of H2 =?

Mole = mass /Molar mass

Mole of H2 = 23.2/2

Mole of H2 = 11.6 moles

Next, the balanced equation for the reaction. This is given below:

N2 + 3H2 —> 2NH3

From the balanced equation above,

1 mole of N2 reacted with 3 moles of H2 to produce 2 moles of NH3.

Next, we shall determine the limiting reactant. This can be obtained as follow:

From the balanced equation above,

1 mole of N2 reacted with 3 moles of H2.

Therefore, 0.83 moles will react with = (0.83 x 3) = 2.49 moles of H2.

From the calculations made above, we can see that only 2.49 moles out of 11.6 moles of H2 is required to react completely with 0.83 mole of N2.

Therefore, N2 is the limiting reactant.

Finally, we shall determine the maximum amount of NH3 produced from the reaction.

In this case, we shall use the limiting reactant because it will give the maximum yield of NH3 since all of it is consumed in the reaction.

The limiting reactant is N2 and the maximum amount of NH3 produced can be obtained as follow:

From the balanced equation above,

1 mole of N2 reacted to produce 2 moles of NH3.

Therefore, 0.83 mole of N2 will react to produce = (0.83 x 2) = 1.66 moles of NH3.

Therefore, the maximum amount of NH3 produced from the reaction is 1.66 moles.

5 0
3 years ago
A or B or C or D, fassst plzzz
olga nikolaevna [1]

Answer:

a.option is the correct answer

4 0
2 years ago
Read 2 more answers
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