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Minchanka [31]
4 years ago
10

If your answer is a measurement, it is not correct unless _____. A)it is converted to an SI unit of measurement B)all the units

have cancelled out C)you have checked your answer with your teacher D)it includes the proper units along with the numbers E)it is rounded off to the second decimal place
Chemistry
1 answer:
alisha [4.7K]4 years ago
7 0

Answer:

A) it is converted to an SI unit of measurement

Explanation:

The SI, System International units are the fundamental units used to measure the scientific quantities.

Example of SI units are Kilogram (km) for distance, liter (l) for liquid, centimeter (cm), and meter (m) for size of the object or short distance etcetera.

SI units help to differentiate quantities from each other and without using SI unit, no one can identify the category of the quantity whether it is distance, size or volume.

Hence, the correct answer is "A) it is converted to an SI unit of measurement".

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What happens when you mix acid and base?
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6 0
3 years ago
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A secondary step in the process to produce ultra-pure silicon is to combine silicon tetrachloride with magnesium. How many grams
mariarad [96]

The mass of silicon, Si produced from the reaction is 329.41 g

<h3>Balanced equation </h3>

SiCl₄ + 2Mg —> 2MgCl₂ + Si

Molar mass of SiCl₄ = 28 + (35.5×4) = 170 g/mol

Mass of SiCl₄ from the balanced equation = 1 × 170 = 170 g

Molar mass of Si = 28 g/mol

Mass of Si from the balanced equation = 1 × 28 = 28 g

From the balanced equation above,

170 g of SiCl₄ reacted to produce 28 g of Si.

<h3>How to determine the mass of Si produced </h3>

From the balanced equation above,

170 g of SiCl₄ reacted to produce 28 g of Si.

Therefore,

2 Kg (i.e 2000 g) of SiCl₄ will react to produce = (2000 × 28) / 170 = 329.41 g of Si

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Learn more about stoichiometry:

brainly.com/question/14735801

8 0
3 years ago
How many moles of Ag will be produced from 16g of Cu, assuming AgNO3 is available in excess
andreyandreev [35.5K]

Answer:

Assuming the reaction you are referring to is the following:

AgNO3 + Cu --> Cu(NO3)2 + Ag

First, we should balance the reaction:

2 AgNO3 + Cu --> Cu(NO3)2 + 2 Ag

Now we carry out dimensional analysis, taking into account the molar ratios of different species as given in the balanced reaction and molar masses (which we can look up in the periodic table).

We begin with what we know, which is that we have 16.0 g Cu reacting and work our way toward the quantity that we would like to calculate, namely moles of Ag.

16.0 g Cu x   1 mol Cu    x   2 mol Ag    = 0.504 mol Ag

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3 0
3 years ago
Consider the diagram below.
Murljashka [212]

I think it’s B energy of the reactants

4 0
4 years ago
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