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2 years ago

I need help anyone???

Chemistry

1 answer:

N76 [4]2 years ago

3 0

1-requires carbon

2-requires carbon for photosynthesis to occur

3-carbon is an output of cellular resp.

Hope this helps:)

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Calculate the mass of arsenic(III) chloride produced when 0.150 g of arsenic reacts with excess chlorine according to the equati

adell [148]

Answer:

0.363 g

Explanation:

2As + 3Cl₂ → 2AsCl₃

calculate the number of moles of arsenic

Number of moles = mass/ molar mass

Number of moles = 0.150 g/ 75 g/mol

Number of moles = 0.002 mol

compare the moles of arsenic with arsenic chloride.

As : AsCl₃

2 : 2

0.002 : 0.002

Mass of arsenic chloride produced:

Mass = number of moles × molar mass

Mass = 0.002 × 181.28 g/mol

Mass = 0.363 g

6 0

2 years ago

Which structural formula does not represent benzene? a hexagon with nothing drawn inside it a hexagon with a dotted circle drawn

boyakko [2]

Answer:
<span>A hexagon with nothing drawn inside it does not represent Benzene.

Explanation:

Below attached picture contains structures mentioned in given option.

Structure of Option-A is shown in Red Color.
</span>
Structure of Option-B is shown in Blue Color.

Structure of Option-C is shown in Green Color.

Structure of Option-D is shown in Orange Color.

Result:
Except Option-A, all structures represent Benzene. Option-A in fact shows the structure of Cyclohexane.

5 0

2 years ago

Read 2 more answers

Which statement correctly describes the differences between positive and negative acceleration?

Serga [27]

C. Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed. ( I put A & it was not the correct answer, the answer was C )

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3 years ago

Which is an example of making a quantitative observation?

lions [1.4K]

Measuring the surface of an oil painting and finding its dimensions 12 to be 12 inches

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2 years ago

How would you prepare 175 mL of a 0.350kmol/m^3 calcium nitrate solution

SVEN [57.7K]

0,35 kmol/m³ = 0,35 mol/dm³ = 0,35 mol/L
175 mL = 0,175 L
*-*-*-*-*-*-*-*-*-*-*-*
C = n/V
n = 0,35×0,175
n = 0,06125 mol

mCa(NO₃)₂: 40+(14×2)+(16×6) = 164 g/mol

1 mol --------- 164g
0,06125 ---- X
X = 10,045g

To prepare 175 mL of 0,35M solution, add 10,045g of calcium nitrate and add water to a volume of 175ml.

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2 years ago