1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
daser333 [38]
4 years ago
9

A cheeseburger from a fast food restaurant contains 19 g of fat, 20 g of carbohydrate, and 28 g of protein. how many kcal of ene

rgy does the cheeseburger contain? (the accepted caloric values for foods are 4.0 kcal/g for carbohydrate, 9 kcal/g for fat, and 4 kcal/g for protein.) report the answer to 2 significant figures. 280 kcal 630 kcal 70. kcal 17 kcal 360 kcal
Chemistry
1 answer:
Alina [70]4 years ago
4 0
I believe the answer is B
You might be interested in
The escape of molecules from the surface of a liquid is known as _____.
RUDIKE [14]
Its c. evaporation :)

8 0
3 years ago
Read 2 more answers
An aqueous solution has a mass of 490 grams containing 8.5 × 10-3 gram of calcium ions. The concentration of calcium ions in thi
Arada [10]
The concentration may be expressed as % m/m, this is the mass of ions in 100 mass units of solution, whose formula is:

% m/m = [mass of ions / mass of solution]*100

Then,

%m/m = [8.5*10^ -3 grams of calcium ions] / [490 grams of solution] * 100 =

% m/m = 1.74 * 10^ -5 %

Answer: 1.74 * 10 ^ -5 % 
5 0
4 years ago
A 2.00 kg piece of lead at 40.0°C is placed in a very large quantity of water at 10.0°C,and thermal equilibrium is eventually re
sveticcg [70]

Answer:

Δ S = 26.2 J/K

Explanation:

The change in entropy can be calculated from the formula  -

Δ S = m Cp ln ( T₂ / T₁ )

Where ,

Δ S = change in entropy

m = mass  = 2.00 kg

Cp =specific heat of lead is 130 J / (kg ∙ K) .

T₂ = final temperature  10.0°C + 273 = 283 K

T₁ = initial temperature ,  40.0°C + 273 = 313 K

Applying the above formula ,

The change in entropy is calculated as ,

ΔS = m Cp ln ( T₂ / T₁ )  = (2.00 )( 130 ) ln( 283 K / 313 K )

ΔS = 26.2 J/K

6 0
3 years ago
How many atoms are ln 6.31 moI of sodium sulfate
Art [367]
896.27
One mole of sodium sulfate is 143.04, so just multiply that times 6.31.
I may be wrong call me out if I am
6 0
3 years ago
Read 2 more answers
Please help!
valkas [14]
The answer is B . Brønsted-Lowry Acid/bases trade H+
3 0
3 years ago
Other questions:
  • What is the physical properties of chlorine
    8·2 answers
  • Why are chromosomes not always visible?
    7·1 answer
  • A chemical reaction with a negative enthalpy change and a negative entropy change ________. A) Must be nonspontaneous Is not pos
    11·1 answer
  • Select all that apply. At STP conditions, 0.50 moles of CO(g), Cl2(g), O2(g): will contain the same number of molecules, will co
    12·1 answer
  • 3. If there were multiple products comment on finding the mixture melting point of the products. Does your sample appear to be a
    14·1 answer
  • *
    11·1 answer
  • What type of reaction occurs in a hand warmer?<br> Exothermic<br> Endothermic
    5·1 answer
  • Which element is classified as a metal?
    10·2 answers
  • Help ASAP!!! I need it now i have to write similar test tmrw
    9·2 answers
  • Which is the heaviest element produced in large stars by nuclear fusion near the end of their life cycle?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!