All categories

2 years ago

20) If a single gram of sugar contains 4 Calories of energy, what is the Calorie content from a serving of cereal that

Chemistry

1 answer:

Zanzabum2 years ago

8 0

Answer:
36.8
Explanation:
Because 9.2 x 4 = 36.8

You might be interested in

A sample of thionylchloride, SOCl2, contains 0.206 mol of the compound. What is the mass of the sample, in grams?

Ilia_Sergeevich [38]

Explanation:

Moles=mass/molar mass

moles × molar mass = mass

0.206 x 119= mass

Mass= 24. 51grams

3 0

2 years ago

Read 2 more answers

To a 25.00 mL volumetric flask, a lab technician adds a 0.150 g sample of a weak monoprotic acid, HA , and dilutes to the mark w

Elis [28]

Answer: The number of moles of weak acid is $4.24\times 10^{-3}$ moles.

Explanation:

To calculate the moles of KOH, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}}\text{Volume of solution (in L)}}$

We are given:

Volume of solution = 43.81 mL = 0.04381 L (Conversion factor: 1L = 1000 mL)

Molarity of the solution = 0.0969 moles/ L

Putting values in above equation, we get:

$0.0969mol/L=\frac{\text{Moles of KOH}}{0.04381}\\\\\text{Moles of KOH}=4.24\times 10^{-3}mol$

The chemical reaction of weak monoprotic acid and KOH follows the equation:

$HA+KOH\rightarrow KA+H_2O$

By Stoichiometry of the reaction:

1 mole of KOH reacts with 1 mole of weak monoprotic acid.

So, $4.24\times 10^{-3}mol$ of KOH will react with = $\frac{1}{1}\times 4.24\times 10^{-3}=4.24\times 10^{-3}mol$ of weak monoprotic acid.

Hence, the number of moles of weak acid is $4.24\times 10^{-3}$ moles.

6 0

3 years ago

compare the boiling points of propane (C3H8) with that of (C4H10) .. explain your answer ...plzzz guys help me with this

yawa3891 [41]

i may be wrong but Use the normal boiling points: propane, C3H8, –42.1˚C; butane, C4H10, –0.5˚C; pentane, C5H12, 36.1˚C; hexane, C6H14, 68.7˚C; heptane, C7H16, 98.4˚C; to estimate the normal boiling point of octane, C8H18.

7 0

3 years ago

Read 2 more answers

Which molecule will have a double covalent bond? #3 #5 & #6

KatRina [158]

Answer:the CO2 molecule has an excess of electron

4 0

2 years ago

How many different compounds are possible, changing only the cis/trans arrangements around these two double bonds?

insens350 [35]

Check the attached file for the answer.

3 0

3 years ago