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lozanna [386]
3 years ago
6

The combination of all frequencies of visible light makes

Chemistry
1 answer:
sashaice [31]3 years ago
3 0

Answer:The visible light contains 7 colours  :  Violet, indigo, Blue, Green, Yellow, Orange and Red.

White colour is formed by the interference of all 7 colours, thus white light has the combination of all frequencies of visible light.

Explanation:

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Which best compares 1 mol of sodium chloride to 1 mol of aluminum chloride?
lesya692 [45]
<span>Mol is the unit of amount of substance. It is equal to 6.02 x 10^23 molecules. Now, One mol of Sodium chloride (NaCl) contains 6.022x 10^23 molecules of NaCl. Also, the number atoms of both Na (sodium) and Cl (chlorine) will be equal. Similatly, One mol of Aluminium Chloride (AlCl3) contains 6.022x 10^23 molecules of (AlCl3) but the ratio of Al and Cl atoms will be 1:3</span>
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3 years ago
How many atoms are in 5 GRAMS of Fe2O3
Llana [10]

There are two iron atoms and three oxygen atoms in each molecule of Fe2O3. So that's five atoms per molecule.

One mole of any molecular substance contains <span>6.02×1023</span> molecules. Since there are two iron atoms in each of the molecules we're considering, there will be <span><span>(6.02×1023)</span>⋅2=1.204×1024</span> iron atoms in a whole mole of them.

But we're considering 0.550 mol, so multiply by 0.550:

<span>n=(0.550</span> mol<span>)⋅<span>(3.01×1024</span></span> atoms/mol<span>)=6.62×1023</span> iron atoms.

6 0
3 years ago
The brown solid that formed is zinc copper oxygen iron
horsena [70]

Answer: Copper

Explanation:

Just took it on Edgen

4 0
3 years ago
The density of an object is defined as mass per unit volume. Mathematically we write that:
Snezhnost [94]
M=DxV V=M/D
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4 0
3 years ago
Read 2 more answers
A student creates a model of a closed ecosystem by filling a glass tank half
Nutka1998 [239]

Answer:

C. The rate of cellular respiration in the tank was much higher than

the rate of photosynthesis

Explanation:

In nature, cellular respiration and photosynthesis are opposite metabolic reactions. Cellular respiration, which is the process of releasing energy, requires oxygen while photosynthesis, which is the process of manufacturing foods by green plants, releases oxygen into the atmosphere. The two equations are as follows:

Photosynthesis:

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Respiration:

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According to this question, 10 snails and two small aquatic plants were added to a closed glass tank half full with water. It was observed that all the snails died. This is most likely due to the fact that the rate of cellular respiration in the tank was much higher than the rate of photosynthesis.

In other words, the usage of oxygen via cellular respiration was much higher than the release of oxygen via photosynthesis.

5 0
3 years ago
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