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Alisiya [41]
3 years ago
15

Have you had the chance to watch a tree grow over a span of several years? Did you notice that the tree grew thicker and taller?

Deep in the roots of the tree and high in the growing shoots are meristem cells. Each year, the meristem cells help the tree continue to grow.
When the seed of a tree first starts to grow, what would happen if the cells did not differentiate?

The seed could form roots, but not leaves.

Other cells would differentiate.

The DNA would make new cells.

All of the cells would be identical.
Chemistry
1 answer:
Kruka [31]3 years ago
3 0

Explanation:

All of the cells would be identical.

is correct answer

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There are three sets of sketches below, showing the same pure molecular compound (hydrogen chloride, molecular formula ) at thre
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Answer:

The correct answer is - option C.

Explanation:

Given: the melting point of HCl is

-114.8 °C, which suggests that below this temperature HCl will be solid.

and, since the boiling point of HCl is - 85.1 °C. It is also suggested that above this temperature HCl will be gas, Therefore.

Solid -114.8  - Ordered arrangement

Liquid -85.1c  - Less orderly arranged

Gaseous - Least orderly arranged

Thus, at —90 °C, HCl will be present 'in the liquid state,  At — 1 °C, HCl will be present in the gaseous state and at -129 °C, HCl will be present in the solid-state. So, the molecules will be organized in a more orderly manner .

Thus, the correct answer is - option C

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3 years ago
Bilangan oksidasi vanadium paling tinggi terdapat dalam senyawa..
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The answer is (b). As, vanadium is attached to five fluoride atoms, each flouride containing -1 oxidation state, hence five fluoride contains -5, to neutralize, vanadium should have +5 oxidation state.

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3 years ago
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Arte-miy333 [17]

Answer:

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Answer:

ΔH°rxn = -47 kJ

Explanation:

Using Hess´s law for the reaction:

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the ΔH°rxn will be given by the expression:

ΔH°rxn kJ  =   2ΔHºf(Fe3O4)  + ΔHºf(CO2)   - ( 3ΔHºf(Fe2O3) + ΔHºf(CO) )

=  2(-1118) + (-394) - ( 3( -824 ) + ( -111 ) )

= - 47 kJ

3 0
3 years ago
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Answer:

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Explanation:

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