Look at the leaves on these plants which pair of sentences about the leaves is true


HELP

Answer:

nitrogen 78%, Oxygen 21%, Argon 0.9%, Carbon dioxide 0.03%, water 0-4%(depends)

Explanation:

Answer:

definition: The atmosphere is composed of a mix of several different gases in differing amounts. The permanent gases whose percentages do not change from day to day are nitrogen, oxygen and argon. Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%.

Explanation:

Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.

Layers of the atmosphere:

- From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere

Answer:

id give you and 8 or 9 but you are really pretty tho

Explanation:

Answer: the answer is n= 0.487 mol

Explanation: i took the test and got it right

Answer:

There are 11 protons in a sodium atom but only 3 in a lithium atom, so the nuclear charge is much greater. ... The only factor left is the extra distance between the outer electron and the nucleus in sodium's case. That lowers the ionization energy.

Answer:

Initially there is 100 g of potassium nitrate in solution, at 50 °C the solubility is 84 g/100g (original data or graph), so 16 g will have crystallised out

Explanation:

Answer:

For balancing this equation

we need to put

Ag2O. = 2

Ag = 4

O2 = 1

Hope it will help

The balanced chemical equation of decomposition of silver oxide is 2 Ag₂O -> 4 Ag + O₂.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Answer:

force had thrown the object with more

Answer:

If an object is in motion and more force is applied to it, the object will begin moving faster

Explanation:

don't have any (sorry:[ )

Answer:

45 mol

Explanation:

First you need to balance the equation:

6K + Cr2O3 = 3K2O + 2Cr

the proportion of the coeficients of potassium and chromium oxide is 6 to 1 so we need to multiply 7.5 by 6 to get 45.

Answer:

A. hibernation

Answer:

Hibernation.

Explanation:

Answer:

What type of plant

Where is it mainly found

What are some facts about it?

Answer:

255 amu has relative abundance 67.5% and 257 has relative abundance 32.5%

Explanation:

Average atomic mass =sum of product of atomic mass and relative abundance all divided by hundred or total abundance

Answer:

Explanation:

By dating the rocks in Earth's ever-changing crust, as well as the rocks in Earth's neighbors, such as the moon and visiting meteorites, scientists have calculated that Earth is 4.54 billion years old, with an error range of 50 million years

Answer:about 10,000 years b maybe

Explanation:Strontium-90 and cesium-137 have half-lives of about 30 years (half the radioactivity will decay in 30 years). Plutonium-239 has a half-life of 24,000 years. High-level wastes are hazardous because they produce fatal radiation doses during short periods of direct exposure.

The radioactive waste from nuclear plants is radioactive for 10,000 years and the correct option is option B.

The waste produced by a nuclear power plant or lab is referred to as radioactive waste. They include radioactive substances that are dangerous to the environment and the majority of biological forms. The wastes degrade over time.

Radioactive wastes are stored to-

Therefore, the radioactive waste from nuclear plants is radioactive for 10,000 years and the correct option is option B.

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Answer:

[tex]\frac{2}{5}[/tex]

Explanation:

Probability refers to chances of occurrence of any event.

Value of probability is greater than or equal to 0 and less than or equal to 1.

Probability = Number of favorable outcomes ÷ Total number of outcomes

Total number of students in math group = 5

Also, 2 students are randomly picked to  be the co-captains.

Probability that students were Sammie and Victor = [tex]\frac{2}{5}[/tex]

Answer:

Oh so so sorry about that. and thanks for caring for us. anyway we are good wbu

Explanation:

im good. i just ate applesauce lol :)

Answer:

Cat

Explanation:

Bcuz I said so that it's a cat

Answer:

98.6 Degrees Fahrenheit

Explanation:

To convert from Celsius to Fahrenheit, the formula is F=(1.8*C)+32. Since C=37 in this case, our formula is F=(1.8*37)+32. First, solving the work in the parentheses, 1.8*37=66.6. Adding that will get you to 98.6, so F=98.6.

Answer:

C) Orion spur.

The Orion Arm is a minor spiral arm of the Milky Way Galaxy that is 3,500 light-years across and approximately 10,000 light-years in length, containing the Solar System, including Earth.

Answer:

The boiling point of the halogens increases as you go down the group. The halogens exist as diatomic molecules, with both atoms sharing an electron to completely fill the outer shell. The increase in boiling (and melting point) can be attributed to the increase in intermolecular forces (van der Waals).tion:

Answer:

32.065 is the correct answer.

Answer:

2O is an atom while O2 Is a molecule

Answer:

isn't that evaporation if not you can just delete my answer-

Explanation:

Answer:

D.) The nuclear model describes the atom as a dense, positive nucleus surrounded by a cloud of negative electrons.

Answer

The nuclear model describes the atom as a dense, positive nucleus surrounded by a cloud of negative electrons.

Answer:

1. Which type of matter has the molecules packed closer together?

a. Solid

2. Matter is made up of _________.

d. All of them

3. Particles with more energy move ________ than particles with less

energy.

c. Faster and farther apart

4. Which best describes the particles in a liquid?

b. More freely moving than a solid

5. Which of the following statements describes a mass?

c. The amount of matter in an object.

Answer:

A reactive metal has the ability to easily lose an electron and acquire a positive charge. Sodium easily loses electrons and acquires a positive charge. Sodium easily lose electrons than magnesium and get oxidized to easily.

Explanation:

Answer: Electrons have wavelike motion and are restricted to certain energy states associated with specific wavelengths.

Answer:

There will not be effect on the gas

Explanation:

I'm sure that it's correct answer

Answer:

single replacement

Explanation: N/A

Answer:

1. They are mostly used to protect materials and prevent chemical reactions.

2.These are Groups

3. I guess it is Rows