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Ket [755]
3 years ago
9

2H20(l) —> 2H2(g) + O2(g) help me pls

Chemistry
1 answer:
xenn [34]3 years ago
5 0
Unfortunately I don't work with the same units as put forward in this question but the equation I use for this is:

pressure*volume = moles*8.314*temperature

The units required for this equation are:

pressure in pascals

temperature in Kelvin

volume in m³

If you convert the units in the question to the units for this equation, you'll be able to work out the volume of oxygen gas in m³
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The phenomenon that naturally warms the earth's lower atmosphere and surface is called the greenhouse effect.


Put me as Brainliest!!!

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3 years ago
Calculate the maximum volume in ml of 0.15M HCl that each of the following antacid formulations would be expected to neutralize.
vlada-n [284]

a. 34 mL; b. 110 mL

a. A tablet containing 150 Mg(OH)₂


Mg(OH)₂ + 2HCl ⟶ MgCl₂ + 2H₂O


<em>Moles of Mg(OH)₂</em> = 150 mg Mg(OH)₂ × [1 mmol Mg(OH)₂/58.32 mg Mg(OH)₂

= 2.572 mmol Mg(OH)₂


<em>Moles of HCl</em> = 2.572 mmol Mg(OH)₂ × [2 mmol HCl/1 mmol Mg(OH)₂]

= 5.144 mmol HCl


Volume of HCl = 5.144 mmol HCl × (1 mmol HCl/0.15 mmol HCl) = 34 mL HCl


b. A tablet containing 850 mg CaCO₃


CaCO₃ + 2HCl ⟶ CaCl₂ + CO₂ + H₂O


<em>Moles of CaCO₃</em> = 850 mg CaCO₃ × [1 mmol CaCO₃/100.09 mg CaCO₃

= 8.492 mmol CaCO₃


<em>Moles of HCl</em> = 8.492 mmol CaCO₃ × [2 mmol HCl/1 mmol CaCO₃]

= 16.98 mmol HCl


Volume of HCl = 16.98 mmol HCl × (1 mL HCl/0.15 mmol HCl) = 110 mL HCl


5 0
3 years ago
How many cyanides are needed to bond with Strontium?
Gala2k [10]

Answer:

3

Explanation:

6 0
3 years ago
What is a number at the bottom right of an element in a chemical equation called?
Ann [662]

Answer:

There’s a particular way of writing what’s in a molecule called a chemical formula. The chemical formulae for all the elements that form each molecule and uses a small number to the bottom right of an element’s symbol to stand for the number of atoms of that element. For example, the chemical formula for water is H 2 O.

Explanation:

7 0
3 years ago
Read 2 more answers
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Volgvan

Answer:

d. adding an inhibitor

c. fish that emit light

c. released

Explanation:

An inhibitor is a negative catalyst. It is usually a substance that slows down the rate of chemical reaction.

Chemical inhibitors acts in way that makes reactions drags over time.

Increasing temperature, increasing concentration and decreasing particle size all will increase the rate of chemical reaction. They make reactions proceed more faster.

When a fish emits light, it is not an exothermic reaction.

An exothermic reaction is one in which heat is released to the environment. In such reactions, heat is liberated to the surroundings. At the end of the reaction, the surrounding will have a higher temperature compared to the reaction.

We assign exothermic reactions a negative value because the sum of heat contents of products is less than that of reactants.

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