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stich3 [128]
3 years ago
14

O2is which of the following? A. Molecule B. compound C. both compound and molecule D. one atom

Chemistry
2 answers:
san4es73 [151]3 years ago
5 0

Answer:

Im pretty sure its A. molecule

Explanation:

If im right, can i have brainliest?

valkas [14]3 years ago
4 0

Answer:

it is a molecule

Explanation:

it is not a compound because compounds are made up from two or more different elements

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balloon that had a volume of 3.50 L at 25.0°C is placed in a hot room at 40.0°C. If the pressure remains constant at 1.00 atm, w
kotegsom [21]

Answer:

The answer to your question is V2 = 3.7 L

Explanation:

Data

Volume 1 = 3.5 L

Temperature 1 = 25°C

Temperature 2 = 40°C

Pressure = cte.

Volume 2 = ?

Formula

To solve this problem use the Charles' law

             V1/T1 = V2/T2

- Solve for V2

             V2 = V1T2 / T1

- Convert temperature to °K

Temperature 1 = 25 + 273 = 298°K

Temperature 2 = 40 + 273 = 313°K

- Substitution

              V2 = (3.5)(313) / 298

- Simplification

              V2 = 1095.5 / 298

- Result

              V2 = 3.7 L

8 0
3 years ago
Read 2 more answers
How much energy is needed to vaporize 75.0 g of diethyl ether (c4h10o) at its boiling point (34.6°c), given that δhvap of diethy
malfutka [58]

Answer: 26.8 kJ of energy is needed to vaporize 75.0 g of diethyl ether

Explanation:

First we have to calculate the moles of diethyl ether

\text{Moles of diethyl ether}=\frac{\text{Mass of diethyl ether}}{\text{Molar mass of diethyl ether}}=\frac{75.0g}{74g/mole}=1.01moles

As, 1 mole of diethyl ether require heat = 26.5 kJ

So, 1.01  moles of diethyl ether require heat = \frac{26.5}{1}\times 1.01=26.8kJ

Thus 26.8 kJ of energy is needed to vaporize 75.0 g of diethyl ether

5 0
4 years ago
Am i correct so far on the first question? And how do i convert to molecules... I use avogadro's number, right?
Talja [164]
I'm pretty sure that you multiply the number of moles by avogadro's number (6.02x10^23)... you may want to check.
4 0
3 years ago
HELPPPP If you observe a blue light emitted during the flame test, what would the wavelength of the light be?
iogann1982 [59]
Observe a blue light be wavelength flame test during
5 0
3 years ago
I need a answer ASAP
svet-max [94.6K]

Answer:

<h3>3.2 millions years old</h3>

Explanation:

i hope it helps :)

4 0
3 years ago
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