CHEMISTRY MIDDLE SCHOOL

What is one way that plants and animals trapped in amber are similar to those trapped in ice

Answers

Answer 1
Answer: They are similar because they are both trapped in some sort of (solid) substance.


please mark brainliest if this answer helped you. I hope it did!
Answer 2
Answer: The both get stuck in the solid and soffocate

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If molarity = moles liter , then how many grams of NaCl are needed to make 1 liter of a 0.1 M solution? A) 0.0584 g NaCl B) 3.246 g NaCl C) 5.844 g NaCl D) 58.44 g NaCl
Please help with the last problem!
How did Rutherford's experimental evidence lead to the development of a new atomic model?
What is the name of the process plants use to make the energy (food) they need?A symbiosis B respiration C pollination D photosynthesis Please help.
Which condensed structural formula represents an unsaturated compound?(1) CH3CHCHCH3 (3) CH3CH3 (2) CH3CH2CH3 (4) CH4

The development of nuclear power has provided electricity for less money, but at a cost. What may be considered a "cost" of nuclear power? A. Large amounts of energy are produced very cheaply.

B.
It takes a lot of energy to run a nuclear power plant.

C.
Nuclear power plants provide new jobs for a community.

D.
The radioactive waste is unsafe and hard to store safely.

Answers

D. A disadvantage of nuclear power is that waste products are unsafe and hard to store. They must be stored for many hundreds of years before they becomes safe and easier to dispose of, and we currently don't have a good method of storing them in the meantime.


d. radioactive waste is extremely unsafe and difficult to store safely.

Express 975,000 in scientific notation

Answers

9.75 x 10^5

A number in scientific notation has the form a x 10^b where

• a is the coefficient

• b is the exponent

Here are the steps to convert a number greater than 1 to scientific notation.

a) Find the coefficient

Put the decimal point after the first digit and drop the trailing zeroes

9.75 000

The coefficient is 9.75.


b) Find the exponent

Count the number of digits after the first digit.

In 975 000 there are five digits after the 9. Therefore, the exponent is 5.

c) Write the number

We write 975 000 as 9.75 x 10^5.

a. Atomic #= 3 b. Mass #=7 c. # of Protons = d. # of Neutrons = e. # of Electrons = E in Ist energy level = E in 2nd energy level = E in 3rd energy level = 0 # of Valence E = Li​

Answers

I hope you can understand my writing :)

What happens to the average kinetic energy of gas particles as the temperature increases?a.) Increases

b.) Decreases

c.) Remains the same

d.) Volume changes

Answers

Temperature is the average kinetic energy so I would say the answer is A.

You can put out a chip pan fire by putting a damp cloth over the pan. Explain why this works.

Answers

Placing a damp towel on the chip pan fire will stop the oxygen from getting to flames, so the fire will smother out.

what would happen to the boiling point of water at 8000 above sea level, where the air pressure is lower?

Answers

Answer:

The boiling point will decrease to 73.3°C

Explanation:

Atmospheric pressure decreases with elevation and the boiling point of water is directly related to atmospheric pressure, it rapidly drops as elevation increases too, approximately  1°C for every 300 meters.
The boiling point will be lower, because water boils when its vapour pressure is equal to atmospheric pressure. If you are at 8 000 m above sea level, the air pressure is lower than one atmosphere and the equilibrium between the water and air pressures will be reached before.
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How many grams of C3H8 would be needed to produce 6.39 grams of CO2?
What compound is O2H?
What is the chemical equation for the burning of propane if all the products and reactants are in the gas phase?4H2O(g) + 3CO2(g) + 5O2(g) → C3H8(g)C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)C3H8(g) + O10(g) → 3CO2(g) + 4H2O(l)4H2O(l) + 3CO2(g) → C3H8(g) + 5O2(g)Answer - B - C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)