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4 years ago

6co2 (g) +h2O (/) C6H12o6 +6O2(g) what is the statement and why is an endothermic reaction?

1 answer:

4 0

The above given reaction is photosynthesis and reverse of that reaction is called respiration reaction. E<span>nergy is required by this reaction to proceed so as you are providing energy this make the reaction endothermic.Hope i cleared your doubt</span>

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Subscripts in chemical formulas are used to indicate the relative proportions of the elements in a

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Answer:

relative proportions of the elements in a chemical reaction

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3 years ago

Material of density of 762 kg/m3 occupies a container

konstantin123 [22]

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density = 762 kg/m³

We must first convert the volume from cm³ to m³

$1 \: {cm}^{3} = 1 \times {10}^{ - 6} {m}^{3}$

So 99 cm³ will be

$9.9 \times {10 }^{ - 5} \: \: {m}^{3}$

So the mass of the material is

$mass = 762 \times 9.9 \times {10}^{ - 5} \\ = 0.075438$

We have the final answer as

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4 years ago

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Lead(II) nitrate and ammonium iodide react to form lead(II) iodide and ammonium nitrate according to the reaction

inessss [21]

Answer:

Explanation:

2 NH4I + Pb(NO3)2 = PbI2 + 2 NH4NO3

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0.380 mol/1000 ml x 751 ml = 0.285 mol Pb(NO3)2

0.285 mol Pb(NO3)2 x 2 mol NH4I/1 mol Pb(NO3)2=0.571 mol NH4I needed

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3 years ago

What is the hydrogen ion concentration [H+] in a 3.76 x 10^-2 M solution of nitric acid (HNO3)

Vladimir79 [104]

Nitric acid (HNO₃) is a strong acid. Hence, it completely dissociates into ions as H⁺ and NO₃⁻ in water.

The balanced equation is;

HNO₃(aq) →H⁺(aq) + NO₃⁻(aq)

The stoichiometric ration between HNO₃(aq) and H⁺(aq) is 1 : 1

Hence, the [H⁺] = <span>3.76 x 10</span>⁻²<span> M</span>

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4 years ago

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Taya2010 [7]

B i found the sheet online and it was filled out to be

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3 years ago

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