A well designed experiment can be replicated by other true or false

snow_tiger [21]

“An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt). Groundwater can be extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology.”
Wikipedia › wiki › Aquifer
I hope this helps

6 0

3 years ago

Ammonia (NH3) reacts with oxygen (O2) to produce nitrogen monoxide (NO) and water (H2O). Write and balance the chemical equation

bekas [8.4K]

Answer:

There is 1.6 L of NO produced.

Explanation:

I assume you have an excess of NH3 so that O2 is the limiting reagent.

Step 1: Data given

2.0 liters of oxygen reacts with ammonia

Step 2: The balanced equation

4NH3 + 5O2 → 4NO + 6H2O

For 4 moles of NH3, we need 5 moles of O2 to produce 4 moles of NO and 6 moles of H2O

Consider all gases are kept under the same conditions for pressure and temperature, we can express this mole ratio in terms of the volumes occupied by each gas.

This means: when the reaction consumes 4 liters of ammonia (and 5 liters of oxygen) it produces 4 liters of nitrogen monoxide

Now, when there is 2.0 liters of oxygen consumed, there is 4/2.5 = 1.6 L of nitrogen monoxide produced.

There is 1.6 L of NO produced.

4 0

4 years ago

The (15-35-15) number on a bag of fertilizer is calculated by an outdated method. All modern fertilizers use PO43- as a source o

Alik [6]

The (15-35-15) number on a bag of fertilizer is calculated by an outdated method. Using the knowledge of the old methods, the number of moles of phosphorus found in 10.0 grams of phosphorus is 0.05 mole.

The (15-35-15) number on the bag of fertilizer is used for:

Nitrogen 15 : Phosphorus pentoxide 35: potassium oxide 15

Thus, in a 100-gram bag of fertilizer, there are 35 grams of phosphorus pentoxide P₂O₅.

∴

To determine the number of moles of 10 grams of phosphorus pentoxide in (15-35-15) bag of fertilizer, we have:

$\mathbf{=10 \times \dfrac{35}{100} \ grams \ of \ P_2O_5}$

= 3.5 grams of P₂O₅

Recall that:

$\mathbf{Number of moles = \dfrac{mass}{molar \ mass}}$

the molar mass of P₂O₅ = 142 g/mol

∴

$\mathbf{Number of moles = \dfrac{3.5\ g}{ 142 \ g/mol}}$

$\mathbf{Number of moles = 0.0246 \ mol}$

Provided that 1 mole of P₂O₅ harbors 2 moles of phosphorus;

Then;

The number of phosphorus present in 10.0 grams of (15-35-15) fertilizer is:

= 0.0246 moles × 2

= 0.0492 moles

≅ 0.05 moles

Therefore, we can conclude that the number of moles of phosphorus found in 10.0 grams of (15-35-15) bag of fertilizer is 0.05 moles.

Learn more about phosphorus here:

brainly.com/question/4622631?referrer=searchResults

8 0

3 years ago

The specific heat of aluminum and plastic are 0.800 J/g.°C and 1.600 J/g.°C respectively. If it takes about 36minutes for a plas

blagie [28]

Answer:

$mc \alpha t$

mass=m

c=specific heat capacity

$\alpha t$

change in temperature

8 0

2 years ago

What are epimers? How are glucose and manose epimers? Please Help!

katrin2010 [14]

Answer:

PLZ MARK ME BRIANLIEST I REALLY WANT IT PLZZZZZZ ISS GARIB KI DUA LAGEGI YARR PLZ

Explanation:

Glucose and galactose are monosaccharides that differ from one another only at position C-4. Thus, they are epimers that have an identical configuration in all the positions except in position C-4. ... Glucose and galactose are epimers that do not differ in position C-5 but differ in position C-4.

4 0

3 years ago

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