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Dmitriy789 [7]
3 years ago
8

4 On a bright, sunny day, which time of day can

Chemistry
1 answer:
Marina CMI [18]3 years ago
5 0
It has to be J. 12:00am cause at night that’s when everything
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Help me please I don’t know this
jekas [21]
I think it’s 62 grams
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3 years ago
Select the three most acidic hydrogen atoms in lactic acid, CH3CH(OH)CO2H, and rank them in order of decreasing acidity. Explain
Olin [163]
It is easier to determine this if we draw the structural formula of lactic acid as shown in the attached picture. There are three functional groups in lactic acid: carboxyl group, hydroxyl group, and the parent alkane chain. Any of the hydrogens in the alkane chain is the least acidic. Then, it is followed by the H in the hydroxyl group. The most acidic is the H in the carboxyl group.

5 0
3 years ago
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Oxygen gas is collected over water. The atmospheric pressure is 748 mmHg, and the temperature of the oxygen is 29 ºC. The pressu
KonstantinChe [14]

The pressure of the oxygen gas collected : 718 mmHg

<h3>Further explanation</h3>

Given

P tot = 748 mmHg

P water vapour = 30 mmHg

Required

P Oxygen

Solution

Dalton's law of partial pressures states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases

Can be formulated:

P tot = P1 + P2 + P3 ....

The partial pressure is the pressure of each gas in a mixture

P tot = P H₂O + P Oxygen

P Oxygen = 748 mmHg - 30 mmHg

P Oxygen = 718 mmHg

6 0
3 years ago
Imagine that you wanted to make a time capsule in which you would seal important artifacts from your life (pictures, poems, a lo
Elza [17]

Answer:

Argon gas

Explanation:

Between the options given, argon gas is the least reactive. Argon is known as a <em>noble gas</em>, this means that it is located in the group 18 in the periodic table. These gases are known for their low reactivity, under most circumstances.

The <u>electronic configuration</u> of argon helps us see why that is the case: With an atomic number of 18, it has an electronic configuration of 1s² 2s² 2p⁶ 3s² 3p⁶. This means the most external orbital is filled with electrons, meaning that there are not unpaired electrons able to react with other substances.

5 0
3 years ago
Which type of chemical protective clothing (cpc) protects the wearer against chemical vapors or gases?
kiruha [24]
The CPC equipment ensures the safety and health of workers. Management and employees must be aware of the hazards: the type of chemical, the physical state (liquid, solid or gas), and the physiological effect (toxic, carcinogen, asphyxiant, corrosive, etc.).
Vapor-protective clothing is type of chemical protective clothing (CPC) that protects the wearer against chemical vapors or gases.


8 0
3 years ago
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