Which statement best explains why the atmosphere is considered an open system?

Answer:

I believe 11 is B 12 is C 13 is B and 14 is C

Answer:

0.05

Explanation:

We find the rate of the chess

Sarah is 2.5/10

Arun is 1.6/8

We will get

0.25 for Sarah

0.20 for Arun

We subtract the two

0.25 - 0.20, we then get 0.05

Sarah has 0.05 more cheese in one serving than Arun

Along the coast, its always colder near water

Answer:

Periodic table

Explanation:

Answer:

Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area.

Answer:

1. Mg²⁺   2. Cl⁻    3. PO₄³⁻

Explanation:

Answer:

1. Mg²⁺

2. Cl⁻

3. PO₄³⁻

Explanation:

Feel free to give brainliest.

Have a great day!

Answer:

d = 3 g/cm³

Explanation:

Given data:

Mass of stone = 27 g

Volume of water = 10 cm³

Volume of water+ stone = 19 cm³

Volume of stone = ?

Density of stone = ?

Solution:

Volume of stone = total volume - volume of water

Volume of stone = 19 cm³ -  10 cm³

Volume of stone = 9 cm³

Density of stone:

d = m/v

d = 27 g/ 9 cm³

d = 3 g/cm³

Answer:

No, it is not

Explanation:

The reason for this answer is below

To conduct an experiment/investigation that involves the use of specific amounts of carbon dioxide and water by plants, one needs a controlled environment where the amount of carbon dioxide and water made available to the plant can be monitored and regulated as desired by the experimental design. The neighbor's backyard cannot provide this controlled environment and thus it is a bad idea.

Note that the neighbor's backyard cannot provide the controlled environment because the amount of carbon dioxide the plants will be exposed to there cannot be regulated as this is the carbon dioxide from the atmosphere and also the plants could get additional water from midnight dew which cannot be regulated also.

It is a good idea to use backyard garden to conduct an investigation of

how tomato plants use specific amounts of carbon dioxide and water to

grow at a certain rate.

To obtain an accurate result, experiments should be done in an

environment  which is similar to those in which plants are exposed to during

photosynthetic reactions.

The use of the backyard garden will have different factors such as

atmospheric pressure, sunlight, precipitation which the plants are exposed to

in its normal environment which is why it is a good idea.

Read more on https://brainly.com/question/897750

Answer:

Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup." Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.

Explanation:

it provides carbon dioxide and rhen it goes through the car and gives the gas oxygen

Answer:

More than soap sc um, hard-to-remove scale or film is often due to hard water. Also, take a good look at your faucets or fixtures.

Explanation:

hope this helps :D

Answer:

Tin (IV) Nitrate

General Formulas and Concepts:

Chem

Explanation:

Sn has 2 general forms in charges: Sn²⁺ and Sn⁴⁺ as it is a Post-Transition metal.

Nitrate, NO₃⁻, has a 1 minus charge.

To balance out these charges from the given compound, we know that there are going to be 4 nitrates to balance out a charge. +4 and -4 equals 0, so the charge of Sn would be +4.

Therefore, our compound name would be Metal (Oxidation Number) polyatomic ion:

Tin (IV) Nitrate

Answer: B

Explanation:

The observations about the fizzing mixture provide evidence of a chemical reaction is A substance escaped from the beaker in the form of a gas. The correct option is B.

A chemical reaction is a process of forming a compound from two substances. The substance that reacts to create a compound is called a reactant, and the compound that is formed after the reaction is called a product.

In a beaker, a chemist mixed hydrochloric acid with a sample of baking soda. The two chemicals together instantly started to bubble and fizz. Fizz is the bubbles that are made in the reaction, they are realized in the environment. Thus, they have escaped from the beaker.

Thus, the correct option is B. A substance escaped from the beaker in the form of a gas.

To learn more about a chemical reactions, refer to the link:

https://brainly.com/question/22817140

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Answer:

9.03 x 10²³atoms

Explanation:

Given parameters:

Number of moles of CO₂  = 1.5mol

Unknown:

Number of atoms  = ?

Solution:

In a mole of a substance, we have the Avogadro's number of particles which is 6.02 x 10²³atoms.

  Using this number, we can determine the amount of atoms in any substance.

If;

       1 mole of CO₂ contains 6.02 x 10²³ atoms;

     1.5mole of CO₂ will contain 1.5 x 6.02 x 10²³ atoms

                                                = 9.03 x 10²³atoms

Answer:

Explanation:

volume of spherical ball = 4/3 x π R³

= 4 x 3.14 x .5³ / 3

= .5233 cm³ or ml.

mass = 2 g

density = mass / volume

= 2 / .5233

= 3.8 g / ml .

So its density is more than that of water , hence it will sink into water .

Answer:

Explanation: i think it is C if i'am wrong i'am sorry

Answer:

The electron cloud keeps the surronds the atom like abubble and the orbit is what the  electrons go around

Explanation:

Answer:

The most correct option is A

Explanation:

The correct option is A because all objects emit thermal radiation when there temperature is higher than absolute zero - this is based on the Stefan-Boltzmann law. Hence, when the rods in an oven heat up above absolute zero, they begin to start emitting radiation. It should noted at this point that objects do not "emit" conduction and thus all options that involved "emitting conduction" are subsequently wrong.

Answer:

8 atoms of oxygen.

Explanation:

Given parameter:

Mass of magnesium phosphate  = 15g

Unknown:

Number of oxygen atoms  = ?

Solution:

The formula of the compound is;

        Mg₃(PO₄)₂;

 Number of atoms oxygen  = 2(4) = 8 atoms of oxygen.

Answer:

5.5Hz

Explanation:

Given parameters:

Wavelength of green light  = 5.5 x 10⁷m

Unknown:

Frequency of the wave = ?

Solution;

Green light is a part of the electromagnetic spectrum. The speed of all these rays in free space is 3 x 10⁸m/s

So;

     V  = fλ

V is the speed

f is the frequency

λ is the wavelength;

 So;

         F = [tex]\frac{V}{wavelength}[/tex]  

  Insert the parameters and solve;

       F = [tex]\frac{3 x 10^{8} }{5.5 x 10^{7} }[/tex]   = 5.5Hz

Answer:

Balancing an equation

Explanation:

These steps describes the processes which are involved in balancing a chemical equation.

In balancing the a chemical equation, the law of conservation of mass is strictly adhered to. It suggests that in a chemical reaction, atoms are neither created nor destroyed, but they combine with one another.

Answer:

balancing

Explanation:

Answer:

Soapy detergents clean more effectively than normal soap. Hard water (water with high mineral content). Hard water can be used with soapy detergents but soap cannot be used with hard water. When soapy detergent and hard water are combined it makes a protective film that is really resistant to rinsing.

Have a good day.

Answer:

i think it would be B.

Explanation:

Answer:

4. all the above

Explanation:

It's all of the above because Thermal energy has all three. An example is like a pot of water on the stove boiling.  Radiation is coming off of the eye of the stove. Conduction occurs when heat transfers from hot to cold ( like the handle of the pot). Convection occurs in the boiling of the water by rotating causing the heat to rise.

Answer:

well I dont know much about it but....

I think the soul if nature is kind if like a goddess which provides us the reason to live and the reason to die.

I guess thats it :/

Answer:

The human soul is naturally and essentially immortal; it is uncreated and eternal. The soul passes from one body to another through a series of many incarnations. After paying off its sin (karmic debt), the soul is liberated from somatic existence and lives in a totally blissful state.

Explanation:

hope it helps you

Answer:

Chemical equation: AgNo3 + LiBr = AgBr + LiNO3

Explanation:

Answer:

Chemical equation: AgNO3 + LiBr -> AgBr + LiNO3

Complete Ionic equation: Ag + NO3 + Li + Br -> AgBr + Li + NO3

Net Ionic equation: Ag + Br -> AgBr

Explanation:

You start out with the chemical equation. We know that to get to the complete ionic equation we have to follow the solubility guidelines for common ionic compounds. In there, we can see that NO3 is soluble with no exceptions, which means every NO3 in this equation should be separated from the compound (this brings us to Ag + NO3 + LiBr -> AgBr + Li + NO3). Next we should separate Br, but be careufl because in the solubility guidelines it states that an exception to this being soluble would be if Br was next to Ag, Hg, and Pb. Since our second Br is next to an Ag, our equation will look like Ag + NO3 + Li + Br -> AgBr + Li + NO3. To find the net ionic equation all we're going to need to find are the substances that cancel each other out on both sides of the equation (aka the spectator ions). Our spectator ions in this case are Li and NO3. After we cancel those out, our net ionic equation is Ag + Br -> AgBr.