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Luba_88 [7]
3 years ago
13

Please i need the answer im dying here ;-

Chemistry
2 answers:
ELEN [110]3 years ago
8 0

Answer:

anawer is none of the above

Serggg [28]3 years ago
7 0

Answer:

i think none of the above is the answer

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What is a dependent variable?
Pachacha [2.7K]
Dependent variable, depending on the argument that we change the variable is changing variable. For Example; Milk degradation, we want to observe the effect of temperature controlled experiment. The same brand, same amount, the same air environment
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3 years ago
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How many grams of water can you make with 60g of H2.<br> Unbalanced equation is: H2 + O2 -&gt; H2O
IrinaVladis [17]

Answer:

360g where 1mole of O2 reacts with 2miles of H2 to form 1mole of water

Explanation:

2H2+O2=2H2O

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2 years ago
Problem page a virus has a mass of ×9.010−12mg and an oil tanker has a mass of ×3.0107kg . use this information to answer the qu
faltersainse [42]
A. The mass of one mole of the virus is calculated by multiplying the mass of a single virus by the Avogadro's number which is equal to 6.022 x 10^23. Performing this operation,

   mass = (9.0 x 10^-12 mg)(6.022 x 10^23) = 5.42 x 10^12 mg

In correct number of significant figures, the answer would only have to be 5.4 x 10^12 mg. 

b. The number of moles of the virus that will have the same mass as the oil tanker is calculated by dividing the mass of the oil tanker by the mass of one mole of the virus. Note that doing division, both would have to have the same units. 

       n = (3.0 x 10^7 kg) / (5.4 x 10^12 mg)(1 g/1000 mg)(1 kg/1000 g)

Simplifying,
               n = 6

In correct number of significant figures, the answer is 6.0. 
4 0
3 years ago
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The diagram below represents a plan cell Letter X represents a structure in the cell ​
weeeeeb [17]

the cell structure represented by x is the nucleus

4 0
2 years ago
Consider the following reaction:
Katyanochek1 [597]

Answer:

The three statements are true

Explanation:

For the reaction:

I₂O₅(s) + 5CO(g) → I₂(s) + 5CO₂(g)

State oxidation of iodine in I₂O₅ is:

5 O²⁻ = 10⁻

As you have 2 I and the molecule has no charge, <em>oxidation state of I is +5</em>.

The carbon in CO has an oxidation state of +2 and in CO₂ is +4. That means <em>the carbon is oxidized</em>

<em />

An oxidizing agent is a substance that produce the oxidation of the agent that reacts with this one. CO is oxidized because of I₂O₅ is producing its oxidation being <em>the oxidizing agent</em>

<em></em>

Thus,<em> the three statements are true</em>.

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3 years ago
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