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3 years ago

What is the main function of starch in plants

Chemistry

2 answers:

NikAS [45]3 years ago

8 0

Answer:

to store energy for plants

Explanation:

galina1969 [7]3 years ago

7 0

Explanation: it is formed by large number of glucose molecules joined to each other , then when cell need it is digested to produce glucose to be consumed by the cell to produce energy.

You might be interested in

Determine the oxidation number of Sulphur in Sodium thiosulphate

Semenov [28]

The oxidation number of Sulphur = +2

<h3>Further explanation</h3>

General formula for determining Oxidation Numbers :

1. The number of oxidation of single element atoms = 0. Examples of Ar, Mg, Cu, Fe, N₂, O₂, etc. = 0

Group I : +1

Group II : +2

H in compound = +1, except metal hydride compounds (Hydrogen which binds I or II groups) oxidation number H = -1, for example, LiH, MgH₂, etc.

2. Oxidation number O in compound = -2, except OF2 = + 2 and in peroxide (Na₂O₂, BaO₂) = -1 and superoxide, for example KO₂ = -1/2.

3 The oxidation number in a non-filled compound = 0,

The total amount of oxidation in ion = ion charge, Example NO₃⁻ = -1

Sodium thiosulphate - Na₂S₂O₃

Oxidation number Na = +1 ⇒x2 = +2

Oxidation number O = -2 ⇒x3 = -6

Oxidation number Na₂S₂O₃ = 0

2.Na+2.S+3.O=0

2.+1+2.S+3.(-2)=0

2+2S-6=0

-4+2S=0

2S=4

S=+2

4 0

3 years ago

A compound is 150.86 g carbon, 8.86 g hydrogen, and 20.10 g oxygen by

Ivahew [28]

Answer:

C20 H14 O2

Explanation:

Remark

This is a sample, which the question does not say and should. It is a fraction of 1 mole. So what you have to do is multiply the numbers given by x and equate it to 286.28

Equation

150,86* x + 8.86*x + 20.1*x = 286.28

179.8x = 286.28

x = 286.26/179.8

x = 1.592

Now multiply the given numbers by 1.592

150.86 * 1.592 = 240.58

8.85 * 1.592 = 14.1

20.1 * 1.592 = 32

Rounding you get

240/12 = 20

14.1/1 = 14

32/16 = 2

C20 H14 O2

8 0

3 years ago

Does the lava that forms shield volcanoes probably have a lot of silica or water in it? Explain your answer.

RSB [31]

Sheild volcanoes contain more water in it. It is a type of volcano that is built entirely of fluid lavas.

5 0

3 years ago

Read 2 more answers

Please help thank you

Fynjy0 [20]

Answer:

Explanation:

8 0

3 years ago

I just need help on the reactivity series stuff please I need to pass my grade check HELP

Setler [38]

Reactivity series:-

$\setlength{\unitlength}{0.8 cm}\begin{picture}(20,15)\thicklines\put(5,9.5){\large {\boxed{ \sf{Reactivity \: series}}}}\put(0.8,8){\large\sf K \qquad\qquad\qquad Potassium\qquad\qquad\qquad \: maximum}\put(0.8,7.2){\large\sf Na \qquad\qquad\qquad Sodium\qquad\qquad\qquad\quad \: reactivity}\put(0.8,6.2){\large\sf Ca\qquad\qquad\qquad \: Calcium}\put(0.8,5.2){\large\sf Mg\qquad\qquad\quad \: Magnesium}\put(0.8,4.2){\large\sf Al\qquad\qquad\qquad \: Aluminium\qquad\qquad\qquad \: decreasing}\put(0.8,3.2){\large\sf Zn\qquad\qquad\quad\qquad \: Zinc\qquad\qquad\qquad\qquad \:reactivity}\put(0.8,2.2){\large\sf Fe\qquad\qquad\quad\qquad Ferrous}\put(0.8,1.2){\large\sf Pb\qquad\qquad\qquad \: \:\: Lead}\put(0.8,0.2){\large\sf H\qquad\qquad\qquad \: \:Hydrogen}\put(0.8, - 0.6){\large\sf Cu\qquad\qquad\qquad \: Copper}\put(0.8, - 1.5){\large\sf Hg\qquad\qquad\qquad \: Mercury}\put(0.8, - 2.5){\large\sf Ag\qquad\qquad\qquad \: \:Silver}\put(0.8, - 3.5){\large\sf Au\qquad\qquad\qquad \: \: Gold\qquad\qquad\qquad\quad \: \: minimum reactivity}\put(9.3,8.2){\vector(0, - 2){12}}\end{picture}$

Ag is found as too less reactive so

Cu✓
Al✓
Ca✓

No element in universe can displace potassium (K) from its solution as it's most reactive .

Nota

Fe is also a reactive metal.

Only Cupper is less reactive than it

Al✓
Ca✓

Only Calcium can displace Mg

Mg and Ni can do ,Aurum(Gold) is least reactive so can't

Only Mg

Only Mg

Mg and Ni

Only Zn

#10

Zn and Pt

#11

Nota

As Ca is third most reactive metal

#12

Nota

4 0

3 years ago