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3 years ago

What kind of graph would use for this data? The months of the year and the amount of rainfall, and why

Chemistry

1 answer:

Digiron [165]3 years ago

6 0

Answer:

A Desert Climatogram is a graph that shows the temperature and rainfall, for each month in the year, for the Desert.

Explanation:

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ASAP PLEASE

Natasha2012 [34]

Answer:

Option A.) 2 ppm

Explanation:

60 particles in 30 million can be expressed as a fraction:

$\frac{60}{30million}$

And, dividing both numerator and denominator by 30, that can be simplified as:

$\frac{2}{1million}$

That means 2 particles of sulfur dioxide in 1 million particles of sample, which is 2 parts per million or 2 ppm, which is the option A.

8 0

4 years ago

Which compound(s) contain the most hydrogen atoms per molecule or formula unit? hydrogen selenide ammonium bromide strontium dih

igomit [66]

The answer is strontium dihydrogen phosphate

That is strontium dihydrogen phosphate, is the compound containing the most hydrogen atoms per molecule or formula unit.

The formulas of the following compounds are as follows:

Hydrogen selenide H₂Se

Ammonium bromide NH₃Br

Strontium dihydrogen phosphate Sr(H₂PO4)₂

Sodium bicarbonate NaHCO₃

As it can be seen from the formula of strontium dihydrogen phosphate Sr(H₂PO4)₂ , that it contains the most hydrogen atoms per molecule or formula unit.

3 0

3 years ago

A reaction will be spontaneous only at low temperatures if both ΔH and ΔS are negative. For a reaction in which ΔH = −310.1 kJ/m

ruslelena [56]

Answer:

3211.12 K

Explanation:

The expression for the standard change in free energy is:

$\Delta G=\Delta H-T\times \Delta S$

Where,

$\Delta G$ is the change in the Gibbs free energy.

T is the absolute temperature. (T in kelvins)

$\Delta H$ is the enthalpy change of the reaction.

$\Delta S$ is the change in entropy.

For reaction to be spontaneous, $\Delta G$

Given, $\Delta H=-310.1\ kJ/mol=-310100\ J/mol$

$\Delta S=-89.00\ J/K.mol$

So,

$\Delta H-T\times \Delta S$

Thus, applying values as:-

$-310100-T\times (-89.00)$

So, T = 3484.27 K

The conversion of T( °C) to T(K) is shown below:

T( °C) = T(K) - 273.15

So,

T = (3484.27 - 273.15) K = 3211.12 K

The temperature below which the reaction is spontaneous is:- 3211.12 K

6 0

4 years ago

5000kg of ammonium nitrate per square kilometer of cornfield per year. how much nitric acid would be needed to make the fertiliz

Serggg [28]

$NH_3+HNO_3-> NH_4NO_3$

1 mole of nitric acid produce 1 mole of ammonium nitrate.

moles in 5000 kg of ammonium nitrate :

$n=\dfrac{5000\times 1000}{80}\\\\n=62500\ moles$ ( molecular mass of ammonium nitrate is 80 gm/mol )

So, number of moles of nitric acid required are also 62500 moles.

Mass of 62500 moles of nitric acid :

$mass = 62500\times 63 \\\\mass = 3937500\ gram\\\\mass = 393.75\ kg$

Hence, this is the required solution.

5 0

3 years ago

Calculate the volume of a 1.50M HCl solution that contains 0.920 mol of HCI. (SHOW WORK)

BARSIC [14]

Answer:

= 0.613dm^3

Explanation:

Data:

Molarity, M = 1.50M

no. of moles = 0.920 moles

volume=?

Solution:

as, molarity= $\frac{moles}{volume in dm^3}$

so, volume = $\frac{moles}{molarity}$

putting values:

= $\frac{0.920}{1.50}$

volume = 0.613dm^3

6 0

2 years ago