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Nutka1998 [239]
3 years ago
6

Green plants produce sugar in their leaves through the process of photosynthesis. To make this sugar, plants must acquire some m

aterials from their environment. Arrow 2 represents _______ that is taken up from the soil through the roots of the plant. A. Hydrogen B. Carbon dioxide C. Oxygen D. Water
Chemistry
1 answer:
Tcecarenko [31]3 years ago
4 0

Answer:

Explanation:

The answer is D: Water

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A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe
Agata [3.3K]

Answer:

not goin to be rude but I don't even get the question??

5 0
3 years ago
When you count up the electrons in a Lewis Structure, do double and triple bonds count as 4 or 6 electrons?
natima [27]

Answer:

Double=4 and triple=6

Explanation:

This is because double bonds are two pairs of electrons are shared between atoms and triple bonds are three pairs, and one pair of electrons is 2, so 2 x 2=4 and 2 x 3=6.

6 0
3 years ago
14. How would you correctly record the volume in the graduated cylinder below?
Y_Kistochka [10]
I’m pretty sure it’s b
6 0
3 years ago
Analizando una biomolécula X, un científico comprueba que está formada por Carbono, Hidrógeno, Oxígeno y Nitrógeno, además de li
Cloud [144]

Analyzing a biomolecule X, a scientist verifies that it is made up of Carbon, Hydrogen, Oxygen and Nitrogen, in addition to releasing water when it joins with other similar molecules to form polymers. Considering these antecedents, it can be inferred that biomolecule X corresponds to: A Steroids B fatty acid C nucleotide D amino acid E monosaccharide (for people who dont speak spanish)

ok you answer is probably A

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6 0
3 years ago
A piece of charcoal is found to contain
Naddika [18.5K]

Answer: The tree died 9709.46 years before.

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant = 100

a - x = amount left after decay process = \frac{30}{100}\times 100=30

a) to find rate constant

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{5600years}=1.24\times 10^{-4}years^{-1}

b) to know the age

t=\frac{2.303}{1.24\times 10^{-4}}\log\frac{100}{30}

t=9709.46years

The tree died 9709.46 years before.

8 0
3 years ago
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