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777dan777 [17]
3 years ago
10

Question 7

Chemistry
1 answer:
Zigmanuir [339]3 years ago
8 0

The correct answer to the question is:

<h3>1 O atom / 2 H atom</h3>

Sucrose is an organic compound with a molecular formula of C₁₂H₂₂O₁₁

With the molecular formula of sucrose, we can obtain the relationship of oxygen and hydrogen in the compound. This can be obtained as follow:

Sucrose => C₁₂H₂₂O₁₁

Hydrogen atom = 22

Oxygen atom = 11

<h3>Oxygen to Hydrogen =? </h3>

Oxygen to Hydrogen = 11 / 22

<h3>Oxygen to Hydrogen = 1/2</h3>

Therefore, the simple unit factor that relates the number of hydrogens in sucrose to the number of oxygens is:

1 O atom / 2 H atom

Learn more: brainly.com/question/7281916

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The tallest mast in the world is the KTHI-TVmast in Branchard, which measures 2063 feet , what is the expressed in meter?
Amanda [17]
1ft=.3048meter

So if we have 2063ft and want it in meters we just do a simple unit conversion.

(2063ft)(.3048meters/1ft)=628.8meters. Here ft cancel out and leave us with meter units.

Any questions please feel free to ask. Thank you.
8 0
3 years ago
100 points!! Answer the question with all work shown. Picture is shown. Only #1 please.
Serhud [2]

To determine whether the crown was made of pure gold or not, we need to compare the density of gold (19.3 g/mL) to the density of the crown.

The formula for density is

Density=\frac{mass}{volume}

we know the mass of the crown is 714 grams and its volume is 38.3 mL. (Because it displaces 38.3 mL of water)

Using this information, we can plug the numbers into our density formula to solve for the density of the crown.

\frac{714 grams}{38.3 mL} = 18.6 g/mL

The density of the crown is 18.6 g/mL, thus the crown was not made of pure gold, as that has a density of 19.3 g/mL.  In conclusion, the goldsmith tried to screw over the king.

4 0
4 years ago
Read 2 more answers
Plz help plz help me will mark Brainly
strojnjashka [21]

Answer:

Greenhouse gases absorb some of the energy and trap it in the lower atmosphere. Less heat radiates into space, and Earth is warmer. Many greenhouse gases occur naturally. Carbon dioxide, methane, water vapor, and nitrous oxide are naturally present in Earth's atmosphere. Since some of the extra energy from a warmer atmosphere radiates back down to the surface, Earth's surface temperature rises.

Hope this helped! :)

6 0
3 years ago
Use significant figures rule
ivolga24 [154]

Answer:

x, Z, M, H, A, K, E, I, L, R, O, W

7 0
3 years ago
How many moles of methane are produced when 85.1 moles of carbon dioxide gas react with excess hydrogen gas?
tino4ka555 [31]

Taking into account the reaction stoichiometry, 340.0 moles  of methane are produced when 85.1 moles of carbon dioxide gas react with excess hydrogen gas

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

CO₂ + 4 H₄  → CH₄ + 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

  • CO₂: 1 mole
  • H₄: 4 moles  
  • CH₄: 1 mole
  • H₂O: 2 moles

<h3>Moles of CH₄ formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 1 mole of CO₂ form 4 moles of CH₄, 85.1 moles of CO₂ form how many moles of CH₄?

moles of CH_{4} =\frac{85.1 moles of CO_{2}x4 moles of CH_{4} }{1 moles of CO_{2}}

<u><em>moles of CH₄= 340.4 moles</em></u>

Then, 340.0 moles  of methane are produced when 85.1 moles of carbon dioxide gas react with excess hydrogen gas

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

#SPJ1

6 0
2 years ago
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