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Gennadij [26K]
3 years ago
9

Which factor is a measure of the oxygen in a body of water?

Chemistry
1 answer:
KATRIN_1 [288]3 years ago
6 0
B. Dissolved Oxygen

is a measure of the oxygen in a body of water.
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DIRECTIONS: Underline the selected word item that best completes the statements.
tigry1 [53]

Explanation:

(<u>Climate</u>, Weather) is an overall atmospheric condition of a place of 30 years and more while (Climate,<u>Weather</u>) is a condition for a short period of time.

2. (<u>Climate</u>, Weather) is influenced by latitude, altitude, ocean current, and topography.

3. The (<u>higher</u>, lower) the altitude, the (<u>colder</u>, warmer) the climate.

4. (<u>Windward</u>, Leeward) area of the mountain forms precipitation while (Windward,<u>Leeward)</u> gives dry air and warm weather.

5. Ocean currents bring (cold,<u> warm</u>) water and rain from the equator to the poles and (<u>cold</u>, warm) water from the poles toward the equator

3 0
3 years ago
A spectrophotometer measures the transmittance or the absorbance, or both, of a particular wavelength of light after it has pass
Taya2010 [7]

Answer:

b. The transmittance of the cuvette must be measured in the same place each time.

Explanation:

When using a spectrophotometer, light passes not only through the liquid sample, it also passes through the cuvette. This means that each time a reading is made, you not only measure the transmittance/absorbance of the sample, <u>but of the cuvette as well</u>.

For this reason it's important that the reading of the cuvette's absorbance remains the same through all the process, so the answer is b), because different faces of the cuvette may have different absorbances.

4 0
4 years ago
An ideal gas has a temperature of 25 oC, a pressure of 1.7 atm, and volume of 345 mL, how many moles of gas are present in the c
Sholpan [36]

Answer: There are 0.024 moles of gas are present in the container.

Explanation:

Given: Temperature = 25^{o}C = (25 + 273) K = 298 K

Pressure = 1.7 atm

Volume = 345 mL (1 mL = 0.001 L) = 0.345 L

Formula used is as follows.

PV = nRT

where,

P = pressure

V = volume

n = no. of moles

R = gas constant = 0.0821 L atm/mol K

T= temperature

Substitute the values into above formula as follows.

PV = nRT\\1.7 atm \times 0.345 L = n \times 0.0821 L atm/mol K \times 298 K\\n = \frac{1.7 atm \times 0.345 L}{0.0821 L atm/mol K \times 298 K}\\= \frac{0.5865}{24.4658} mol\\= 0.024 mol

Thus, we can conclude that there are 0.024 moles of gas are present in the container.

6 0
3 years ago
What are two parts of the atomic theory of atoms?
MissTica

Answer:

The first part of his theory states that all matter is made of atoms, which are indivisible. The second part of the theory says all atoms of a given element are identical in mass and properties. The third part says compounds are combinations of two or more different types of atoms.

Explanation:

Hope this helps u

Crown me as brainliest:)

4 0
3 years ago
Is this statement true or false?
r-ruslan [8.4K]
True. Living things are classified by the characteristics they have in common. 

<span>All </span><span>living</span><span> organisms are </span><span>classified</span><span> within the organization based on extremely fundamental, shared characteristics.The classification of organisms is called taxonomy. </span>
5 0
3 years ago
Read 2 more answers
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