The question is in the picture above ! help!

Bacteria living in the soil are dependent upon which of the following abiotic factors?

Irina-Kira [14]

Soil temperature and water content

7 0

3 years ago

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Please help! brainliest, rattings, thanks, etc.

pochemuha

According to Newton's first law of motion, it takes an unbalanced force to move an object at rest.

I hope this helps :)

3 0

3 years ago

A tank at is filled with of sulfur tetrafluoride gas and of sulfur hexafluoride gas. You can assume both gases behave as ideal g

dangina [55]

The question is incomplete, the complete question is:

A 7.00 L tank at $21.4^oC$ is filled with 5.43 g of sulfur hexafluoride gas and 14.2 g of sulfur tetrafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction and partial pressure of each gas. Round each of your answers to significant digits.

Answer: The mole fraction of sulfur hexafluoride is 0.221 and that of sulfur tetrafluoride is 0.779

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ......(1)

For sulfur hexafluoride:

Given mass of sulfur hexafluoride = 5.43 g

Molar mass of sulfur hexafluoride = 146.06 g/mol

Putting values in equation 1, we get:

$\text{Moles of sulfur hexafluoride}=\frac{5.43g}{146.06g/mol}=0.0372mol$

For sulfur tetrafluoride:

Given mass of sulfur tetrafluoride = 14.2 g

Molar mass of sulfur tetrafluoride = 108.07 g/mol

Putting values in equation 1, we get:

$\text{Moles of sulfur tetrafluoride }=\frac{14.2g}{108.07g/mol}=0.1314mol$

Total moles of gas in the tank = [0.0372+ 0.1314] mol = 0.1686 mol

Mole fraction is defined as the moles of a component present in the total moles of a solution. It is given by the equation:

$\chi_A=\frac{n_A}{n_A+n_B}$ .....(2)

where n is the number of moles

Putting values in equation 2, we get:

$\chi_{SF_6}=\frac{0.0372}{0.1686}=0.221$

$\chi_{SF_4}=\frac{0.1314}{0.1686}=0.779$

Hence, the mole fraction of sulfur hexafluoride is 0.221 and that of sulfur tetrafluoride is 0.779

7 0

3 years ago

Is CH3NH3Br acidic, basic, or neutral?

prisoha [69]

Answer:

Basic I think

Explanation:

Im kinda of sure

5 0

2 years ago

The digit that would have to be estimated in reading this instrument would be the nearest:

wariber [46]

Answer:

The least count of vernier calipers is 0.01 g.

(B) is correct option.

Explanation:

Given that,

The digit that would have to be estimated in reading this instrument,

According to figure,

We need to calculate the pitch

Using formula of pitch

$pitch=\dfrac{distance\ moved}{Number\ of\ complete\ rotation}$

Put the value into the formula

$pitch=\dfrac{1}{10}$

$pitch=0.1\ g$

We need to calculate the least count of vernier calipers

Using formula of least count

$Least\ count=\dfrac{pitch}{number\ of\ vernier\ scale\ division}$

Put the value into the formula

$Least\ count=\dfrac{0.1}{10}$

$Least count = 0.01\ g$

Hence, The least count of vernier calipers is 0.01 g.

(B) is correct option.

4 0

3 years ago

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