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2 years ago

10) The presence of nitrates in soil can be shown by warming the soil with

Chemistry

1 answer:

tresset_1 [31]2 years ago

5 0

Answer:

ammonia

Explanation:

Nitrogen fertilizers contain N in the forms of ammonium, nitrate and urea. Upon application to the soil, urea-N rapidly hydrolyzes to ammonia, thus it shares similar characteristics as ammonia-based N fertilizers.

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Upon combustion, a compound containing only carbon and hydrogen produces 2.67 g<img src="https://tex.z-dn.net/?f=CO_%7B2%7D" id=

Hoochie [10]

Answer:

$\boxed{\text{CH$_{2}$}}$

Explanation:

1. Calculate the mass of each element

$\text{Mass of C} = \text{2.67 g } \text{CO}_{2}\times \dfrac{\text{12.01 g C}}{\text{44.01 g }\text{CO}_{2}}= \text{0.7286 g C}\\\\\text{Mass of H} = \text{1.10 g }\text{H$_{2}$O}\times \dfrac{\text{2.016 g H}}{\text{18.02 g } \text{{H$_{2}$O}}} = \text{0.1231 g H}$

2. Calculate the moles of each element

$\text{Moles of C = 0.7286 g C}\times\dfrac{\text{1 mol C}}{\text{12.01 g C }} = \text{0.060 67 mol C}\\\\\text{Moles of H = 0.1231 g H} \times \dfrac{\text{1 mol H}}{\text{1.008 g H}} = \text{0.1221 mol H}$

3. Calculate the molar ratios

Divide all moles by the smallest number of moles.

$\text{C: } \dfrac{0.06067}{0.06067}= 1\\\\\text{H: } \dfrac{0.1221}{0.06067} = 2.015$

4. Round the ratios to the nearest integer

C:H = 1:2

5. Write the empirical formula

The empirical formula is $\boxed{\text{CH$_{2}$}}$

8 0

3 years ago

What impact would a sudden increase in the price of wood have on producers and consumer? How might each group respond to the cha

Lisa [10]

The law of supply states, things remaining equal, an increase in price results in an increase in quantity supplied. The direct relation which is between the price and quantity.

Therefore, when the price of wood increases, then the producers increases the quantity which is produced as they are willing to sell more at a higher price. Each group might respond to the change in price in that, the law of demand states that all things are equal.
A decrease in a quantity leads to an increase in price which is demanded. The existence in an inverse relation which is between price and quantity.
When the demand for good increases the consumer demand decreases.

6 0

3 years ago

Read 2 more answers

What is the equilibrium constant of 2H, 0 = 2H2 +0,?

AlexFokin [52]

Answer:

K = [H₂]² [ O₂] / [H₂O]²

Explanation:

The equilibrium constant of any reaction can be written as,

K = [product]/ [reactant]

For given reaction:

Chemical equation:

2H₂O → 2H₂ + O₂

equilibrium constant:

K = [H₂] [ O₂] / [H₂O]

In stoichiometric calculations, we will put the coefficient of balanced equation in given equilibrium constant equation.

K = [H₂]² [ O₂] / [H₂O]²

6 0

4 years ago

Texas is 790 miles from east to west. How many feet is that if 1 miles is equal to 5,280 feet?

Kitty [74]

The answer is 4,171,200 feet

6 0

3 years ago

How many grams of Al would be needed to displace all of the copper ions in 71.8 mL of 0.610 M CuSO4?

Galina-37 [17]

The amount of Al that would be needed will be 0.79 grams

<h3>Stoichiometric calculations</h3>

From the equation of the reaction below:

$2 Al + 3 CuSO_4 --- > Al_2(SO_4)_3 + 3 Cu$

The mole ratio of Al to $CuSO_4$ is 2:3.

Mole of 71.8 mL. 0.610 M $CuSO_4$ = 0.610 x 71.8/1000 = 0.0438 moles

Equivalent mole of Al = 2/3 x 0.0438 = 0.029 moles

Mass of o.o29 moles Al = 0.029 x 26.98 = 0.79 grams

More on stoichiometric calculations can be found here: brainly.com/question/27287858

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4 0

2 years ago