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kobusy [5.1K]
3 years ago
13

Which of the following is the BEST description of a budget? * 10

Chemistry
1 answer:
Nonamiya [84]3 years ago
4 0

Answer:

A budget is an estimation of revenue and expenses over a specified future period of time and is usually compiled and re-evaluated on a periodic basis. Budgets can be made for a person, a group of people, a business, a government, or just about anything else that makes and spends money.

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a student carried out a combustion reaction with methane (ch4) as the limiting reagent. a 12.0g quantity of methane was used, an
almond37 [142]

The total percent yield:

After the combustion reaction with methane, the percent yield was 66.7%.  

Combustion of Methane:

  • Methane produces a blue flame as it burns in the atmosphere.
  • Methane burns in the presence of enough oxygen to produce carbon dioxide (CO₂) and water (H₂O).
  • It creates a significant quantity of heat during combustion, making it an excellent fuel source.

The other reactant, air's excess oxygen, is always present, making methane the limiting reactant. As a result, the amount of CH₄ burned will determine how much CO₂ and H₂O are produced.

The following chemical process produces carbon dioxide from methane:

CH₄ + 2O₂ ⇒ CO₂ + 2H₂O

Calculations:

1. <u><em>Theoretical quantity of carbon dioxide:</em></u>

All calculations will be based on the amount of methane because the problem specifies that it is the limiting reagent:

12.0g of CH₄ × (1 mol of CH₄/16g CH₄) × (1 mole of CO₂/1 mole of CH₄) × (44g CO₂/1 mole of CO₂)

= 33g of CO₂

2. <u><em>Percent yield:</em></u>

= Actual yield/Theoretical yield × 100

= 22.0g/33g × 100

= 66.7%

Learn more about the percent yield here,

brainly.com/question/15535037

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7 0
2 years ago
A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 10.59 nm . What is the total w
Readme [11.4K]
Whenever objects are placed in a line with spaced in between them, the number of spaces is one less than the number of objects. For reference, you may hold up four fingers and count the spaced between your fingers.

Therefore, if there are 105 molecules, then there are 104 spaces present.

We also know that 1 mm = 1000 nm. So, we first convert the spacing to millimeters as the final answer is required in millimeters

spacing = 10.59/1000 = 0.01059 mm

Now, the width of the lattice will be (ignoring the size of the molecules):

104 * 0.01059

1.10 millimeters
8 0
3 years ago
What is rubidium periodate chemical formula?
bija089 [108]
The formula on the periodate table is Rb
5 0
2 years ago
Plz help me : Copper (I) chloride CuCl is made up of:
TEA [102]
C. Metal and Nonmetal
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2 years ago
What is the initial temperature (in Celsius) of a 675 ml balloon if the
RoseWind [281]

Answer: 127 (3.s.f)

Explanation:

Boyle's law states that Volume x pressure = constant

Therefore let's first find the constant: 45 x 1900 = 85500

Then lets plug 675 ml and 85500 into the equation above:

675 x C = 85500

C = 127 (3 s.f.)

7 0
2 years ago
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