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aleksklad [387]
2 years ago
15

Matthew added a sample of sodium chloride to water and

Chemistry
1 answer:
viktelen [127]2 years ago
3 0

Answer:

11.45

Explanation:

The ph is just 14-pOH so

14-2.55=ph=11.45

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How do chaetoceros contribute to global atmospheric oxygen and carbon dioxide levels?
Brums [2.3K]

Chaetoceros is planktonic diatoms and known to be the largest genus with 400 described species. It has a cell wall made up of silica containing long thin spins. These spines connect the cell walls together to form a colony of cells.

Due to its high rate of growth and high lipid concentration, they can be used as bio fuel. Colonies of chaetoceros act as an important food source inside the water and they are major contributor of carbon.

In north water, they contribute 91% of the total phytoplankton cells thus acting as an important producer in the area. This contributes to the production of oxygen in north water. Total phytoplankton contributes to half of the oxygen production of Earth.

In this way, chaetoceros contribute to global atmospheric oxygen and carbon dioxide levels.


3 0
3 years ago
If an experiment produces 5 g but should have made 500 g, what is the percent<br> yield?
hoa [83]

Answer:

Percentage of yield = 1%

Explanation:

Given:

Amount of yield = 5g

Total amount of product = 500 gram

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Percentage of yield = ?

Computation:

⇒ Percentage of yield = [Amount of yield / Total amount of product]100

⇒ Percentage of yield = [5g / 500g]100

⇒ Percentage of yield = [0.01]100

⇒ Percentage of yield = 1%

7 0
3 years ago
What is the charge on an electrically neutral atom of hydrogen?. . A. 1. . B. 0. . C. +1. . D. +2.
harkovskaia [24]

When the number of electron and number of protons are equal in the atom then the atom is said to be an electrically neutral atom. The loss of electron will result in the formation of cation and the atom will possess positive charge which is equal to the number of electrons lost whereas the gain of electron will result in the formation of anion and the atom will possess negative charge which is equal to the number of electrons gained.

The electrically neutral atom have 0 charge as the number of protons and electrons are equal.

For electrically neutral atom of hydrogen, H the number of electron =1 and the number of proton = 1.

Hence,  the charge on an electrically neutral atom of hydrogen is 0.

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3 years ago
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The answer is D, The speckled coat helps them camouflage into the environment  <span />
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A 10.0 mL syringe contains 0.10 g of nitrogen gas at 0.0 degrees Celsius. What is the pressure inside the syringe?
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Since the sample inside the syringe is a gas, we assume that it is an ideal gas that is we use the expression PV = nRT. We can easily calculate the pressure as follows:

n = m /MM = 0.10 / 28 = 0.0036 mol

P = nRT / V = 0.0036(0.08206)(273.15) / 0.010
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3 years ago
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