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2 years ago

Which of the following is easier to separate? compound mixture element atom

Chemistry

2 answers:

stepladder [879]2 years ago

6 0

Answer:

mixtures

Explanation:

Mixtures contain two or more substances that are relatively easy to separate. The individual components of a mixture can be physically separated from each other.

LenKa [72]2 years ago

4 0

Answer:

mixture

Explanation:

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1. (Slowing) Growth
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2 years ago

Does data from mass spectrometry indicate that modern scientists have made modifications to Dalton's model?

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$http://apchemresources2014.weebly.com/uploads/9/7/6/4/9764824/mass_spectrometry.pdf$

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3 years ago

A mixture of BaCl2 and NaCl is analyzed by precipitating all the barium as BaSO4. After addition of an excess of Na2SO4 to a 3.6

Juli2301 [7.4K]

Answer:

$\% m=40.46\%$

Explanation:

Hello there!

in this case, according to the given information, it turns out firstly necessary for us to write up the chemical equation as shown below:

$BaCl_2+Na_2SO_4\rightarrow BaSO_4+2NaCl$

Thus, we calculate the mass of BaCl2 stoichiometrically related to the produced 1.658 g of precipitate in order to discard it from the sample:

$m_{BaCl_2}=1.658gBaSO_4*\frac{1molBaSO_4}{233.38 gBaSO_4} *\frac{1molBaCl_2}{1molBaSO_4}*\frac{208.23 gBaCl_2}{1molBaCl_2}\\\\m_{BaCl_2}=1.479gBaCl_2$

Thus, the mass percentage is calculated as shown below:

$\% m=\frac{1.479g}{3.656g}*100 \% \\\\\% m=40.46\%$

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2 years ago

Adam is trying to identify a solid. He places a small amount of the substance in an acid solution and observes whether or not a

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3 years ago

Read 2 more answers

Question 8 (1 point)

Margaret [11]

Combustion of Fossil Fuels

Explanation:

The combustion of fossil fuels is a major contributor to unbalancing of the carbon cycle which causes more carbon dioxide to be released into the air than can be naturally processed.

Combustion of fossil fuel is an anthropogenic source of carbon dioxide emission. This chemical process is used to power internal combustion engines and industrial activities. The by product is usually carbon dioxide.

Plants that use carbon dioxide for their life processes cannot completely absorb all of this anthropogenic emission.

Naturally, animal respiration and decomposition provides enough carbon dioxide for use during photosynthesis. Combustion of fossil fuels tips this balance.

Learn more:

Energy brainly.com/question/9231468

#learnwithBrainly

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