Match the term with its description. (4 points)

Column A
1.
Pure substance

:
Pure substance

2.
Heterogeneous

:
Heterogeneous

3.
Homogeneous

:
Homogeneous

4.
Solution

:
Solution

Column B
a.
Liquid homogeneous mixture in which the solute is distributed evenly within the solvent

b.
Mixture that has its different components mixed unevenly within the substance

c.
Mixture that has its different components mixed evenly within the substance

d.
Consists of a single element or type of compound

Answer:

Mantle convection is the slow creeping motion of Earth's rocky mantle caused by convection currents carrying heat from the interior of the earth to the surface while convection current in ocean in; Solar radiation affects the oceans: warm water from the Equatortends to circulate toward the poles, while cold polar water heads towards the Equator. The surface currents are initially dictated by surface wind conditions. The trade winds blow westward in the tropics, and the westerlies blow eastward at mid-latitudes. This wind pattern applies a stress to the subtropical ocean surface with negative curl across the northern hemisphere, and the reverse across the Southern Hemisphere. The resulting Sverdrup transport is equator ward.Because of conservation of potential vorticity caused by the poleward-moving winds on the subtropical ridge's western periphery and the increased relative vorticity of poleward moving water, transport is balanced by a narrow, accelerating poleward current, which flows along the western boundary of the ocean basin, outweighing the effects of friction with the cold western boundary current which origniates from high latitudes

Explanation:

Answer:

Temperature and salinity

Explanation:

Answer:

Two or more elements or compounds combine to form one product.

Explanation:

Yes, two elements can be utilized as reactants for synthesis reactions.

Thus the above response is correct.

Learn more about synthesis reactions here:

https://brainly.com/question/10451730

Answer:

594.6005021gHCl

Explanation:

[tex]734.0gNO(\frac{1molNO}{30.006gNO})=24.46177431molNO\\24.46177431molNO(\frac{4molHCl}{6molNO})=16.30784954molHCl\\\16.30784954molHCl(\frac{36.461gHCl}{1molHCl})=594.6005021gHCl[/tex]

Answer:

594.6005021gHCl

Explanation:

Answer: the answer is True

Explanation:

I'll choose Company 2 to provide my company with lye

Given

Company 1 : Theoretical yield :12,000 grams, actually  8,476 grams

Company 2 : Theoretical yield :9,000 grams, actually  7892 grams

Company 3 : Theoretical yield :7,000 grams, actually  4885 grams

Required

compare their efficiency and choose the company

Solution

To determine which company to choose, we must calculate how much percent yield each company produces. The greater the yield, the greater the efficiency. The company that has the most efficiency will be selected

% yield can be formulated :

[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%[/tex]

[tex]\tt \%yield=\dfrac{8476}{12000}\times 100\%=70.63\%[/tex]

[tex]\tt \%yield=\dfrac{7892}{9000}\times 100\%=87.69\%[/tex]

[tex]\tt \%yield=\dfrac{4885}{7000}\times 100\%=69.79\%[/tex]

Company 2 has the most efficiency

n = m / M

m = n × M

Nitrogen (N2) - a gas is always with an index 2 if we don't have shown how many molecules are there

m (N2) = 4,5 mol × (2×14.007 g/mol)

m (N2) = 4,5 mol × 28.014 g/mol = 126.063g

if you don't solve with the decimals in class just replace 14.007 with 14

also if you haven't learned abour gasses aways having index 2 then:

m (N2) = 4,5 mol × 14.007 g/mol = 63.0315g

Answer:

c tell  me if im wrong:)

Explanation:

:)

The molecule in plants cells first captures the radiant energy from sunlight is chlorophyll. The correct option is C.

Chlorophyll, any of the pigments that participate in photosynthesis, the process by which light energy is converted to chemical energy through the synthesis of organic compounds.

Almost all photosynthetic organisms, including green plants, cyanobacteria, and algae, contain chlorophyll.

Chlorophyll is the name given to the green pigment used by plants to produce food during the photosynthesis process.

Chlorophyll is essential for photosynthesis, which allows plants to absorb light energy. Chlorophyll molecules are arranged in and around photosystems embedded in chloroplast thylakoid membranes.

Chlorophyll is the molecule in plant cells that first captures the radiant energy from sunlight.

Thus, the correct option is C.

For more details regarding chlorophyll, visit:

https://brainly.com/question/13500580

#SPJ2

Answer: Element 1, 3, and 4

I hope this helps, and stay safe! :)

Answer:

1, 3 and 4

Explanation:

The number of atoms N in 0.755 mol of N₂ : 9.09 x 10²³

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

moles of N in 0.755 mol N₂ :

[tex]\tt 2\times 0.755=1.51~moles[/tex]

The number of atoms N :

[tex]\tt 1.51\times 6.02\times 10^{23}=9.09\times 10^{23}~atoms[/tex]

Answer:

Mass = 15.13 g

Explanation:

Given data:

Number of atoms of hydrogen = 8.11×10²³

Mass of ammonia formed = ?

Solution:

Chemical equation:

3H₂ + N₂          →    2NH₃

Number of moles of hydrogen:

1 mole contain 6.022× 10²³ atoms

8.11×10²³ atoms × 1 mol / 6.022× 10²³ atoms

1.35 mol

Now we will compare the moles of hydrogen and ammonia:

            H₂        :         NH₃

             3         :           2

           1.35      :         2/3×1.35 = 0.89 mol

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 0.89 mol × 17 g/mol

Mass = 15.13 g

Answer:

A

Explanation:

We are usually asked to close the valve of the gas cylinder in our various kitchens at home due to the inflammable property of the Liquified Petroleum Gas.

Without closing the valve, the LPG would diffuse into our homes, and any form of spark would cause an explosion and lead to a fire. Lives and properties could be lost in the process.

The correct option is A.

Answer:

C (top to bottom) or the 3rd one

Explanation:

Answer:

B) 1 atm

Explanation:

According to Gay-Lussac's law, the pressure of a given amount of gas at constant volume is directly proportional to its temperature (in Kelvin). This is mathematically expressed as:

P₁/T₁ = P₂/T₂

From the problem, we have the following data:

P₁= 1.5 atm

T₁= 127 °C + 273 = 400 K

T₂= 27 °C + 273 = 300 K

Thus, we calculate P₂ - final pressure - as follows:

P₂ = P₁/T₁ x T₂ = (1.5 atm)/(400 K) x 300 K = 1.125 atm

Therefore, the option which is closest to the new pressure after cooling is B) 1 atm

Answer:

0.075 moles of product formed.

Explanation:

Given data:

Number of moles of oxygen = 0.30 mol

Number of moles of oxygen = 0.15 mol

Number of moles of product formed = ?

Solution:

Chemical equation:

4Na + O₂       →    2Na₂O

Now we will compare the moles of Na₂O with oxygen and sodium.

                Na           :           Na₂O

                  4            :              2

                  0.15       :          2/4×0.15 = 0.075 mol

                O₂           :           Na₂O

                  1            :              2

                  0.30       :          2/1×0.30 = 0.6 mol

Less number of moles of Na₂O are produced by sodium thus it will limit the yield of  Na₂O and act as limiting reactant while oxygen is in excess.

Answer:

0.267 mol

Explanation:

The unbalanced equation for the reaction that takes place is:

Once we balance it we're left with:

Using the stoichiometric ratio of water and octane from the balanced reaction, we can convert mol of water into mol of octane:

Thus 0.267 moles of octane are needed to produce 2.40 mol of water.

Answer:

HF, H+ and F- particles

Explanation:

The particles expected to be in an aqueous solution of a weak acid, HF, would be HF, H+ and F- .

A weak acid is one that does not dissociate completely in aqueous solutions. Hence, the dissociated particles are in equilibrium with the solution of the acid itself.

Thus, for weak acid, HF:

 HF ⇌ H+ + F-

Answer:

A

Explanation:

It's know things

Answer:

Gregor mendel

Explanation:

He is considered by most the father of gentics

Answer:

263.5

Explanation:

Add everything

Answer:

Natural Disaster

Explanation:

Answer:

B and C

Explanation:

Natural disasters can be very destructive along with severe weather. Both mixed would be quite bad for us.

Answer: Metals:-

1) Gold

2) Silver

3) Iron

4) Copper

5) Nickel

6) Aluminum

7)Mercury( Liquid metal)

8) Titanium

9) Radium

10) Californium

Non-metals:-

1) Diamond

2) Sulphur

3) Graphite

4) Carbon

5) Iodine

6) Tincture

7) Bromine (liquid non-metal)

8) Phosphorus

9) Silicon

10) Boron

Hope this helps..... Stay safe and have a Merry Christmas!!!!!!!! :D

Explanation:

Answer:

chloroplasts

Explanation:

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Answer:

The correct answer is D.

Glaciers fall into two groups: alpine glaciers and ice sheets. Alpine glaciers form on mountainsides and move downward through valleys. The largest ice sheets, called continental glaciers, spread over vast areas. Today, continental glaciers cover most of Antarctica and the island of Greenland.

Explanation:

Brainliest please?

Answer:

Acid Rain

Explanation:

Carbon dioxide lowers the pH in the atmosphere, causing it to become more acidic, which can lead to acid rain. This is also why the oceans are becoming more acidic as more carbon dioxide builds up.

Answer:

maybe C?

Explanation:

srry if wrong

hope it helps

Answer: C.

Explanation:

A. Is out because we know that it can melt iron and nickel B. Is out because metal is most definitely meltable

And for D. Between 8,132° and 9,932° Fahrenheit Is the temperature of the outer core

Answer:

4 and 6

Explanation:

im not sure tho i dont nw much bout cs

Answer:

it is metals, it is the most prominent type of element on the table

ANSWER

C,METALLIODS

SORRY PO KUNG MALI

#CARRYONLEARNING

Answer:

the answer is d gs5hkdr o

nvm