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2 years ago

To calculate thedensity of an object,you would ?

Chemistry

1 answer:

Katyanochek1 [597]2 years ago

6 0

To calculate the density of an object, you would need to know the mass and volume of the object.

<h3>What is density?</h3>

The density of an object is the ratio of the mass of the object to that of its volume.

In other words, density = mass/volume.

Thus, in order to calculate the density of an object, both its mass and its volume must be known or given.

More on the density of objects can be found here: brainly.com/question/15164682

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Propane burns in oxygen to produce carbon dioxide and water what is the percent yeild

amid [387]

Answer:

The percentage yield is 78.2g

Explanation:

Given, mass of propane = 42.8 g , sufficient O2 percent yield = 61.0 % yield.

Reaction - C3H8(g)+5O2(g)------> 3CO2(g)+4H2O(g)

First we need to calculate the moles of propane

Moles of propane = $\frac{42.8}{44.096}$ g.mol-1

= 0.971 moles

So, moles of CO2 from the moles of propane

1 mole of C3H8(g) = 3 moles of CO2(g)

So, 0.971 moles of C3H8(g) = ?

= 2.913 moles of CO2

So theoretical yield = 2.913 moles $\times$ 44.0 g/mol

= 128.2 g

So, the actual mass of CO2 = percent yield $\times$ theoretical yield / 100 %

= 61.0 % $\times$ 128.2 g / 100 %

= 78.2 g

the mass of CO2 that can be produced if the reaction of 42.8 g of propane and sufficient oxygen has a 61.0 % yield is 78.2 g

4 0

3 years ago

1. What is the density, in g/cm², of a substance weighing 22.2 cg with dimensions of 0.333

RUDIKE [14]

Mass=22.2cg=2.22g

Volume:-

$\\ \tt\longmapsto 0.333(0.444)(0.555)=0.08cm^3$

$\\ \tt\longmapsto Density=\dfrac{Mass}{Volume}$

$\\ \tt\longmapsto Density=\dfrac{2.22}{0.08}=27.75g/cm^3$

7 0

2 years ago

For the reaction, calculate how many moles of the product form when 0.016mol of O2 completely reacts. . Assume that there is mor

Oksi-84 [34.3K]

The balanced reaction is given as:

<span>2Ca(s)+O2(g)→2CaO(s)
</span>
We are given the amount of oxygen gas to be used for the reaction. This will be the starting point of our calculations.

0.016 mol O2 ( 2 mol CaO / 1 mol O2 ) = 0.032 mol CaO

<span>Therefore, for the reaction, the amount of calcium oxide produced is 0.032 moles.</span>

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3 years ago

The Oxidation number of iron in the Complexion [Fe(CN) 6]³^- is what?

LUCKY_DIMON [66]

Hence, the magnetic behaviour of the complex is paramagnetic. The oxidation number of the central metal atom: The oxidation number of the metal iron is +3.

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2 years ago

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Which of these is an example of how engineers have affected society?

Levart [38]

You can eliminate A, C, and D almost instantly if you know that engineers are construction workers. The answer is B.

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3 years ago

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