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Natasha2012 [34]
3 years ago
7

Eva buys a package of food, and the nutrition label says that one serving is equal to 36 grams and has 110 Calories. However, th

e box is printed with a label that says 0.150 pounds. If Eva eats the whole package, how many Calories will she have consumed?
Chemistry
1 answer:
charle [14.2K]3 years ago
3 0

Answer:74844

Explanation:

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Unit Test
guajiro [1.7K]

Answer:

Heat flows from faster molecules to slower molecules when they collide.

Explanation:

logics

8 0
3 years ago
If a compound has a composition of 82% nitrogen and 18% hydrogen, what is the empirical formula for this compound
Damm [24]

Answer: The empirical formula for the given compound is NH_3

Explanation : Given,

Percentage of H = 18 %

Percentage of N = 82 %

Let the mass of compound be 100 g. So, percentages given are taken as mass.

Mass of H = 18 g

Mass of N = 82 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Hydrogen = \frac{\text{Given mass of Hydrogen}}{\text{Molar mass of Hydrogen}}=\frac{18g}{1g/mole}=18moles

Moles of Nitrogen = \frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{82g}{14g/mole}=5.8moles

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 5.8 moles.

For Hydrogen  = \frac{18}{5.8}=3.10\approx 3

For Nitrogen = \frac{5.8}{5.8}=1

Step 3: Taking the mole ratio as their subscripts.

The ratio of H : N = 3 : 1

Hence, the empirical formula for the given compound is NH_3

3 0
3 years ago
How fast did the universe expand?​
Sidana [21]

Answer:

Actually there is no answer but there is so much theories but people mostly says Bug Bang

7 0
3 years ago
Read 2 more answers
Which element is oxidized in the following reaction: 2FeCl₂ + Cl₂→2FeCl₃ if Fe goes from + 2 to +3 and Cl goes from 0 to −2?
Blizzard [7]

Answer:

Fe.

Explanation:

  • The element which is oxidized is the element that losses electrons and its oxidation state be more positive.
  • The element which is reduced is the element that gain electrons and its oxidation state be more negative.

<em> Fe goes from + 2 to +3, so, it is the element that is oxidized.</em>

<em></em>

3 0
3 years ago
What is TRUE of a compound?
zalisa [80]

Answer:

It does not always retain the properties of the substances that make it up

It requires heat energy to make

Explanation:

A compound is a chemical substance composed of two or more kinds of atoms or elements joined together in a definite grouping.

The properties of compounds are distinct from those of individual elements that are combined in its make up.

  • To produce a compound, a chemical change must take place
  • As  with most chemical changes, heat is required to drive the change.
  • So, to form compounds, some amount of heat is needed to cause the change.
3 0
3 years ago
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