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Ann [662]
3 years ago
5

The roots of plants are important to photosynthesis because they... A. Provide the water needed. B. Provide the carbon dioxide n

eeded. C. Remove glucose from the plant. D. Remove oxygen from the plant.
Chemistry
2 answers:
Crazy boy [7]3 years ago
8 0

Answer:

it's A-provide the water needed.

MaRussiya [10]3 years ago
4 0

Answer: provide the water needed (a)

Explanation:

i just got this question on Study Island

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In the reaction 2H2(g) + O2(g) ® 2H2O(g), what is the volume ratio of H2 to H2O?
densk [106]
By looking at the stochiometry, we can conclude that the ratio is 1 :1

2 moles of H2 react to form 2 moles of H2O

hope this helps
3 0
3 years ago
The statement, "In a chemical reaction, matter is neither created nor destroyed" is called a the Law of Multiple Proportions. b
Anettt [7]

Answer:

D

Explanation:

The statement in the question above gives the statement of the law of conservation of matter. The law of conservation of matter states that matter can neither be created nor destroyed but can be converted from one form to another.

This particular law is talking about the indestructible nature of matter. Whatever form of matter we have presently was as a result of the fact that it was converted to from one initial form. It is this fundamental law that guides the operation of a wide number of scientific operations. Things like reaction between substances to form entirely or partially new substances are guided by these fundamental laws of nature

8 0
3 years ago
Is bread a molecule or a compound
Papessa [141]

Answer:

Bread is a Molecule.

Explanation:

This is what I found.

Bread cannot be classified as a compound. Compounds are formed when two or more substances are bonded together chemically, however, mixtures are not chemically bonded.

The chemical building blocks of bread are proteins and starch. Starch molecules are long, chained polymers of simple sugars (such as glucose) joined end to end by chemical bonds. Proteins on the other hand are more complex, made up of varying combinations of different amino acids.

Hope this helps.

7 0
3 years ago
When a current is passing through a solution of salt water sodium chloride decomposes according to the following reaction.
Scilla [17]

Answer:

.................................................

3 0
3 years ago
Consider a solution containing 0.100 M fluoride ions and 0.126 M hydrogen fluoride. The concentration of fluoride ions after the
saveliy_v [14]

Answer:

The answer is "Option b"

Explanation:

In this question first we calculates the moles in F-, HF, and in HCL, which can be defined as follows:

Formula:

\ Number \ of \ moles\ = \ Molarity \times \ Volume \ in \ litter

\ moles \ in\ F- = 0.100 \ M  \times 0.0250 L\\\\

                     =\ 0.0025 \ moles

\ moles \ in \ HF \ = 0.126M \times 0.0250 L

                       = 0.00315 \ moles

\ moles \ in \ HCl     = 0.0100M \times  0.00500 L

                       = 0.00005 \ moles

\ Reaction: \\\\F - + H+ \rightarrow HF

\Rightarrow  \ moles \ in \ F- = 0.0025  \\\\\Rightarrow  \ moles \ in \ H+ = 0.00005   \\\\    \Rightarrow  \ moles \ in \ HF = 0.00315\\\\  \ total \ moles =   0.00250 -0.0000500 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  0.00315 + 0.00005\\\\\ total \ moles =0.00245  \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  \ \ \ \ \ \  0.00245

\ total \ volume \ in \ the \ solution = \ V = \ 0.0300 L\\\\ after \ addition \ of \ HCl \ the \ concentration \ of \ F- \ =  0.00245\ moles \div V

                                                                                =\frac{ 0.00245 \ moles }{0.0300L}\\\\= \frac{245 \times 10^4}{300 \times 10^5} \\\\= \frac{245}{3000} \\\\                                                           = 0.0817 M

8 0
3 years ago
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