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Allushta [10]
3 years ago
15

What color does cobalt-oxide produce? a. Blue-violet b. Red c. Yellow d. Green Please select the best answer from the choices pr

ovided A B C D.
Chemistry
1 answer:
Lena [83]3 years ago
4 0

Answer: Blue.

Explanation: Regardless of temperature, the metalic coloring oxide will produce a specific shade of blue.

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bulgar [2K]
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7 0
4 years ago
What would be the mass of a 33.5dm3 sample of O2 at STP?
liraira [26]

Answer:

• One mole of oxygen is equivalent to 16 grams.

→ But at STP, 22.4 dm³ are occupied by 1 mole.

{ \tt{22.4 \:  {dm}^{3}   \: \dashrightarrow \: 16 \: grams}} \\  { \tt{33.5 \:  {dm}^{3}  \:  \dashrightarrow \: ( \frac{33.5 \times 16}{22.4} ) \: grams}} \\  \\  \dashrightarrow \: { \boxed{ \tt{23.94 \: g \approx \: 24 \: grams}}}

7 0
3 years ago
If your creating a machine that will clean up trash from the ocean is that adding or removing thermal energy?
bogdanovich [222]

Answer: adding

Explanation:

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6 0
4 years ago
Is the process of a liquid changing into a solid when cooling a chemical reaction?
Alona [7]

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Freezing is almost often an exothermic mechanism which ensures that heat is emitted when liquid transforms into concrete.

The energy emitted after freezing, known as the fusion enthalpy, is a latent heat, which is precisely the same as the energy used to melt the same volume of solid.

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4 years ago
What is the difference between mitosis and meiosis?
pantera1 [17]
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