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Mamont248 [21]
3 years ago
6

The molecular formula for caffeine is C8H10N4O2. Which of the following elements is not found in caffeine? carbon helium nitroge

n oxygen
Chemistry
2 answers:
slavikrds [6]3 years ago
8 0

Answer:

Helium

Explanation:

LOOK AT THE TABLE OF ELEMENTS WOMAN!!!

Rudik [331]3 years ago
5 0

Answer:

Helium

Explanation:

When looking at the formula, you see the elements Carbon (C), Hydrogen (H), Nitrogen (N) and Oxygen (O). Helium is He, which is not shown in the formula.

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Which transfers thermal energy in the same way the Suns energy is transferred to Earth?
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Answer: I think this one is the boiling water


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Explanation:

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1 year ago
A 4 liter solution of bleach with a concentration of 0.5 moles/L is diluted using an extra 4 Liters of water. What is the final
blondinia [14]

Answer:

0.25 mol/L

Explanation:

The following data were obtained from the question:

Initial volume (V1) = 4L

Initial concentration (C1) = 0.5 mol/L

Final volume (V2) = 4 + 4 = 8L

Final concentration (C2) =?

Applying the dilution formula, we can easily find the concentration of the diluted solution as follow:

C1V1 = C2V2

0.5 x 4 = C2 x 8

Divide both side by 8

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3 0
3 years ago
If a drop of blood is 0.05 mL, how many drops of blood are in a blood collection tube that holds 2 mL ?
soldi70 [24.7K]
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7 0
3 years ago
Read 2 more answers
An aircraft cannot reach flying speed on a short runway. Someone suggests reducing its cargo load. Which of Newton's laws is bei
ELEN [110]

Answer:

Second Law

Explanation:

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This is given by :

Acceleration=\frac{Force}{Mass}

In this case the suggestion given to reduce the aircraft's cargo load is the right move as reducing the load on the aircraft will decrease the mass of the whole aircraft.  This in turn will help the aircraft to accelerate more as acceleration inversely varies with mass. Thus the aircraft will be able to reach its flying speed even on a short run way.

Hence, Newton's second law is applied.

6 0
3 years ago
The molar mass of CO2 is 44g/mol. How many grams are in 3 mol CO,?
pochemuha

Answer:

We assume you are converting between moles CO2 and gram. You can view more details on each measurement unit: molecular weight of CO2 or grams This compound is also known as Carbon Dioxide. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CO2, or 44.0095 grams.

6 0
2 years ago
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