Which chemical reaction shows photosynthesis?
A. water + carbon dioxide + sunlight → oxygen + glucose
B. carbon + oxygen-carbon dioxide
C. hydrogen + oxygen → water
D. nitrogen + hydrogen → ammonia

Answers

Answer 1

Answer:

A

Explanation:

Photosynthesis is reverse combustion, thus, water and carbon dioxide should be reactants. Photosynthesis also needs sunlight, so A it is.


Related Questions

Where does the waste material in the body come from
and why does the body need to get rid of these waste
materials?

Answers

Answer:

The cells of the body produce waste materials. The body needs to get rid of these waste materials because they can make us sick. Getting rid of this waste keeps us healthy.

Explanation:

____________________________________________________________

               The Answer I Put On Mine:

____________________________________________________________

The cells inside of your and my body alike produce these waste materials. We need to get rid of them because if we don't, we could get sick! Or possibly cause something worse...

____________________________________________________________

                                 Why?

____________________________________________________________

Well, the answer kind-of explains all I would want to say! Feel free to copy and paste this on your assignment, but do NOT use the sample answer like the other person who answered this did. (The sample answer you should NOT use: "The cells of the body produce waste materials. The body needs to get rid of these waste materials because they can make us sick. Getting rid of this waste keeps us healthy.") It could make your teachers or parents suspicious of your work! Anyways, have a good day! ❥

the question is on the screenshot worth 20 points pls help

Answers

Answer:

Cell Y Only

Explanation:

Some fruits and vegetables are preserved by pickling them. Nandini got confused
with the various steps to be taken to preserve mangoes. Can you help her to
arrange them in the correct order?
1. Cut the mangoes into pieces.
2. Keep the pieces in the sun.
3. Add salt to the pieces.
4. Store it in a dry jar.
5. Wash and dry them

Answers

Answer:

ye

Explanation:

ye

plz help me with this :)

Answers

Answer:

they are randomly moving

Explanation:

Answer:

B

Explanation:

Red shift indicates that stars are moving further away.

Calculate the volume, in liters, occupied by 1.80 moles of H2 gas at STP.

Answers

Answer:

40.32L

Explanation:

So we know that 22.4 Liters is one mole of a gass so we can set up an equation to test that

1mole     1.8mole

_____ = _____

22.4L         x

and then cross multiply so you get 40.32L

Answer:

40.32L

Explanation:

Just did worksheet

10. Which statement is the most important reason that some people feel that solar energy power can be a pollution-free energy source? *
A Electricity generation with solar cells produces no pollution.
B Electricity from burning fossil fuels is used to make solar panels.
C Extra materials from the manufacturing process can be collected and reused.
D The raw material for cells is sand, which is easily available without mining

Answers

The statement should refer to the most important reason is option b. Electricity from burning fossil fuels is used to make solar panels.

What is solar energy power?

It is the energy that arise from the sun that should be converted into thermal or electric energy.

It is the cleanest and the most abundant renewable energy source available.

So based on this, the option b is correct.

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Under certain conditions, what is a chlorine atom able to do to a sodium atom?

Answers

Answer:

it produces a bright yellow light and a great deal of heat energy.

Explanation:

The correct electron configuration of the O2-ion is
A)
2-4
B)
2-5
C)
2-7
D)
2-8

Answers

i think it’s A sorry if i’m wrong

How is the rock in the deep mantle similar to the rock in the parts of the mantle nearest the surface? How is it different?

Answers

Answer:

Similarity: Rocks within the mantle contain more magnesium and iron than the ones in the crust.

Difference: Rocks in the deep mantle are under intense heat and pressure. In this case, they are semi-solid rocks that flow slowly. On the other hand, the part of the mantle that is nearest to the surface consists of rigid rocks. It has a lower temperature than the rocks in the deep mantle.

Explanation:

Rocks within the mantle contain more magnesium and iron than the ones in the crust.

What is Rocks?

Rocks in the deep mantle are under intense heat and pressure. In this case, they are semi-solid rocks that flow slowly.

On the other hand, the part of the mantle that is nearest to the surface consists of rigid rocks. It has a lower temperature than the rocks in the deep mantle.

According to geologists, a rock is a naturally occurring material made up of crystalline crystals of various minerals that have fused together to form a solid mass.

Therefore, Rocks within the mantle contain more magnesium and iron than the ones in the crust.

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what is convection,radiation,conduction?

Answers

Answer:

Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission.

What's the name of ZrBr4

Answers

Zirconium tetrabromide

Answer:

fu-ck fick

Explanation:

Pick out the metals which can react with magnesium sulphate solution. Justify the answer.

calcium, aluminium, mercury, sodium, platinum, copper

Answers

Answer: aluminium, mercury , platinum and copper.

Explanation:

A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution. Thus one element should be different from another element.

A general single displacement reaction can be represented as :

[tex]XY+Z\rightarrow XZ+Y[/tex]

Thus the metals which are more reactive than magnesium will react with magnesium sulphate solution.

The metals which are more reactive than magnesium are aluminium, mercury , platinum and copper.

I have no idea what the answer is

Answers

ill guess c

Explanation:

g

Question
What is the best thing to do if you are asked to complete a task at work that you
believe could endanger your safety?
A) ask someone else to do it
B) keep working, but talk to your boss when they are available
C)tell your boss and return to the task only when you feel it's safe
D) trust your boss and complete the task

Answers

C — all others endanger you.
it’s C the other person is correct

which one of the following groups are decomposers a. algae b. protist c. fungi d. green plants e. photosynthetic bacteria

Answers

Answer:c

Explanation:

A gas occupies 20 liters at a pressure of 40.0 mm hg. What is the volume when the pressure is increased to 80.0 mm hg?

Answers

Answer:

10 L

Explanation:

The new volume can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

From the question we have

[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]

From the question we have

[tex]V_2 = \frac{40 \times 20}{80} = \frac{800}{80} = 10 \\ [/tex]

We have the final answer as

10 L

hope this helps you

If you've got 3.011 X 10 ^ 24 atoms of Boron (B), how many grams do you have?

a
5.0 grams
b
54.055 grams
c
16.7 grams
d
1.82 grams

Answers

The answer is C 54.055 grams

Which is the balanced equation for S8 + O2 → SO2?

S8 + O16 → 8SO2
S8 + O2 → S8 + O2
S8 + O2 → S8O2
S8 + 8O2 → 8SO2

Answers

Answer: S8 + O2 → S8O2: not 100% sure

Explanation:

A balanced chemical equation happens when the quantity of the particles is required on the reactants side is equivalent to the quantity is the molecules in the items side.

What is an ion? What are the different properties of an ion? There is more than one answer choose all that apply

Answers

Answer:

An ion is an atom or molecule that has a different number of electrons than protons, so it has a charge.

Explanation:

Trust me please

Sodium Chloride is an ionic compound. Its molar mass is 58.44g. One formula unit of NaCl consists of one____, whose chemical symbol is___ and one___whose chemical symbol is___. Please help me to fill in the gaps :)

Answers

Answer: One formula unit of NaCl consists of one cation, whose chemical symbol is [tex]Na^+[/tex] and one anion whose chemical symbol is [tex]Cl^-[/tex]

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.  

The cation is formed by the metal sodium which forms  [tex]Na^+[/tex] and the anion is formed by non metal chlorine which forms [tex]Cl^-[/tex].

For a formula unit of sodium chloride,  the charges have to be balanced , thus the valencies of ions are exchanged and the neutral compound result. Thus

[tex]Na^+[/tex] and  [tex]Cl^-[/tex] combine to form neutral [tex]NaCl[/tex]

what are some similarities between polar and nonpolar molecules

Answers

Answer:

Explanation:

Polar bonds also often contribute to a net dipole moment of a molecule. This basically means that there are partial charges that make a molecule overall polar. One example might be water: in H20, oxygen is very electronegative, and hydrogen is less so. This means that oxygen is more negative and hydrogen is more positive. This is why water is cohesive (can stick together): The positive ends stick to the negative ends.

To solve this we must be knowing each and every concept related to polar molecule.  Therefore, polar and nonpolar molecules are covalent compound.

What is polar molecule?

A polar molecule is a type of chemical compound where there is an uneven distribution of electrons among the covalently bound atoms.

The term "polarity" refers to how unlike two molecules' electrical poles are from one another. If they are quite dissimilar, the species is said to be an extremely polar molecule.

Because of the more symmetrical distribution of the electrons, non-polar molecules do not have a lot of charges on their opposing sides. The fees are all offset by one another. Polar and nonpolar molecules are covalent compound.

Therefore, polar and nonpolar molecules are covalent compound.

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Identify the chemical reaction Below:
Ca(OH)2 + HCI CaCl2 + H20

Answers

Answer:

Neutralizaion reaction!

Explanation:

Calciumhydroxide under Hydrochloric acid gives Calciumchloride with the formation of water.

--What do you have to do to the coefficients of equation I below to get to equation II?
i) 2 [tex]SnO_{2}[/tex] + 4 [tex]H_{2}[/tex] --> 2 Sn + 4 [tex]H_{2} O[/tex]
ii) [tex]SnO_{2}[/tex] + 2 [tex]H_{2}[/tex] --> Sn + 2 [tex]H_{2} O[/tex]

--Can you divide equation II by another factor and still have it be correct? Why or why not?

--In a complete sentence, write down a method you could use to determine if an equation is written in the correct way.

Answers

Answer:

1

Explanation:

Answer:

divide all coefficients by 2.

Explanation:

3 , from
lowest to highest: A) Exosphere; B) Stratosphere; C)
Troposphere
A
A, C, B
B
B, A, C
С
C, B, A
D
C, A, B

Answers

Answer:

troposphere

stratosphere

exosphere

Answer:

The answer is C. C, B, A

Please help!! This would mean so much to me!!

Answers

Answer:

I think it's the A one. Hope it's correct

Answer:

A option is correct

Explanation:

A teacher asks students to design an activity to study the formation of inherited traits. Which activity should the students design?

Answers

Answer:

The students should create a project in which they each look at a unique trait that each have (for example, detached ear lobes) and look at their parents to see if they too have this trait. To take it a step further, look at their grandparents for this trait, and ask them about their parents and if they have this trait, this could tell them whether the trait has always, been apparent within the family, if it skipped a generation, or the genetics of one parents were more dominant then the other.

Carbon Monoxide is a toxic gas that is colorless and tasteless. How many moles of CO are in 1 L of the gas at STP?

28 moles

0.045 moles

22.4 moles

0.224 moles

Answers

Answer:

0.045 moles

Explanation:

Given data:

Moles of CO = ?

Volume of gas = 1 L

Temperature and pressure = standard

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

n = PV/RT

n = 1 atm× 1L / 0.0821 atm.L/mol.K × 273 K

n = 1 atm.L / 22.41 atm.L/mol

n = 0.045 mol

The model represents a fluorine (F) atom


what is the mass of the atom​

Answers

Answer:

19

Explanation:

The mass of an atom is given by its mass number. This is because the mass of an atom is concentrated at the nucleus.

Mass number = number of protons + number of neutrons

Protons and neutrons are the most massive particles in any atom.

Protons are the positively charged particles in an atom

Neutrons are uncharged particles.

  So, the mass number of this atom is:

      Mass number  = 9 + 10 = 19

BRAINLIST AND 45 POINTS

In your own words, describe how magma changes form through the rock cycle to eventually become magma again.

Answers

Answer:

Magma becomes rock after the heating process has settled.

Explanation:

Magma is a kind of lava or in other words "Hot melted rock". When rock get really hot it transforms from rock it's solidified state and becomes magma. When magma is hot it can stay that way for a while or until it cools down. When magma does cool down it starts the solidifying state start to come out. If you let the magma cool it will become rock again. This process will happen over and over and it never stops. Every time magma gets cool it hardens, every time it gets hot it melts or and becomes magma. So in conclusion magma only turns back when it has been heated up and liquify.

The rock cycle explains the formation and breaking of the three forms of the rocks through various modes. The magma becomes rocks and magma again through the heating and cooling process.

What is magma?

Magma has been the semi-hot liquid that is present in the mantle in the lithosphere of the earth. They have very high temperatures and can push through the crust in the form of volcanic eruptions.

The magma changes its form from semi-liquid to rocks and back to magma again through the rock cycle. The hot molten magma pushes through the crust, cools, and then forms rocks. These rocks after many years start melting at higher temperature or get deep down the mantle where it converts to semi-liquid again.

Therefore, the rock cycle converts the magma.

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what is the temperature in the fahrenheit?

Answers

A or c but I think it’s a.
The correct answer would be a
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