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
ycow [4]
3 years ago
5

Alex is on a special diet and needs to watch her intake of carbohydrates. Her doctor told her to maintain a 1,500 calorie per da

y diet and to make sure that these come from no more than 20% carbohydrates. She is snacking on pretzels and the nutrition label on the package says that there are 23 grams of carbohydrates per serving, which is 8% of the recommended daily allowance.
How many calories should Alex get from carbohydrates and what percentage of her total recommended intake of carbohydrates in grams is this snack? (1 gram of carbohydrate provides 4 Calories.)

Alex should get 300 Calories from carbohydrates, which is about 75 grams. This snack is 30% of her total grams of carbohydrates per day.
Alex should get 300 Calories from carbohydrates, which is about 33 grams. This snack is almost 70% of her total grams of carbohydrates per day.
Alex should get 300 Calories from carbohydrates, which is about 60 grams. This snack is about 38% of her total grams of carbohydrates per day.
Alex should get 300 Calories from carbohydrates, which is about 75 grams. This snack is 8% of her total grams of carbohydrates per day.
Chemistry
1 answer:
devlian [24]3 years ago
3 0

Answer: Alex should get 300 Calories from carbohydrates, which is about 33 grams. This snack is almost 70% of her total grams of carbohydrates per day.

You might be interested in
Which material is not a metamorphic rock
ASHA 777 [7]
Letter C would be the correct answer
3 0
3 years ago
Substance in which two or more elements are combined in a fixed proportion
Firdavs [7]

Answer: compound

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper Cu

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water H_2O

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Example: Air

8 0
3 years ago
5. A sample of benzene (C6H6), weighing 7.05 g underwent combustion in a bomb calorimeter by the following reaction:
Cloud [144]

Answer:

A sample of benzene (C6H6), weighing 7.05 g underwent combustion in a bomb calorimeter by the following reaction:

2 C6H6 (l) + 15 O2 (g) → 12 CO2 (g) + 6 H2O (l)

The heat given off was absorbed by 500 g of water and caused the temperature of the water and the calorimeter to rise from 25.00 to 53.13 oC. The heat capacity of water = 4.18 J/g/oC and the heat capacity of the calorimeter = 10.5 kJ/oC. (1) what is the ΔH of the reaction?

Explanation:

The heat energy released by the reaction = heat absorbed by calorimeter + heat absorbed by water

Heat absorbed by water = mass of water x specific heat capacity of water x change in temperature

Heat absorbed by water =  500 g x 4.18 J/g. oC x (53.13-25.00)oC

                                         = 58791.7 J

Heat absorbed by calorimeter = heat capacity of calorimeter x change in temperature

Heat absorbed by calorimeter = 10.5 x 10^3 J /oC  x (53.13-25.00)oC

                                                  =295365 J

Total heat energy absorbed = 58791.7 J + 295365 J  = 354156.7 J

Number of moles of benzene given is:

number of moles = goven mass of benzene /its molar mass

=7.05 g / 78.0 g/mol

=0.0903mol

Hence, the heat released by the reaction is:

= 354156.7 J / 0.0903 mol

=  3922.00 kJ/mol

Answer:

The heat released during the combustion of 7.05g of benzene is 3922.00kJ/mol.                                              

7 0
3 years ago
The burning of methane gas, given below, is a redox reaction. which part of the reaction illustrates oxidation?
Effectus [21]
The burning of methane gas, given below, is a redox reaction. which part of the reaction illustrates oxidation, Ch4+O2---CO2+H2O<span>CH4---CO2</span>
8 0
3 years ago
Who created the planetary model of the atom?
shtirl [24]
The answer is Rutherford.
4 0
3 years ago
Other questions:
  • Describe all of the van der Waals forces that exist between molecules of water.
    10·1 answer
  • __________ refers to the total energy of a system.
    12·2 answers
  • What makes some collisions elastic and others inelastic
    9·2 answers
  • If a gas at 25.0 °C occupies 3.60 liters at a pressure of 1.00 atm, what will be its volume at a pressure of 2.50 atm?
    10·1 answer
  • A sample of gas initially has a volume of 1.42 L at 293 K and 1.30 atm. What volume will the sample have if the pressure changes
    14·1 answer
  • In a solution, the parts of the solution are mixed A) chemically. B) physically. C) only in water. D) by electronic means.
    9·2 answers
  • What is te name of P2CL7
    14·1 answer
  • `In this lesson we discussed how to abbreviate electron configurations using what is called noble gas configuration. So if you w
    7·1 answer
  • Please help me which one
    12·1 answer
  • How you would go about separating a mixture of salt and sand. Knowing that salt will dissolve in water. Device a method to separ
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!