How many moles of ethylene (C2H4) can react with 12.9 liters of oxygen gas at 1.2 atmospheres and 297 Kelvin?

Answers

Answer 1

Answer: So in this equation, 3 oxygen will react with 1 ethylene.
then, you convert from 12.9 Liters to moles.
1 mole = 22.4 Liters of gas.
x moles = 12.9 liters

So, 22.4x = 12.9, which means that x = 12.9/22.4, and you get about 0.6, then you divide by 3 because you have 3 Oxygen, and you get about 0.2.

So, 0.2 moles of ethylene C2H4 can react with 12.9 liters of Oxygen Gas.

Hope this Helps :)

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Since a element has a pH number of 7, meaning it is ______. That element can be classified as neither a ____ or a _____. Also, is this a balanced equation?

C4 + O2 -----> 4CO + O2

Answers

If a number has a pH of 7, it is neutral, therefore, one blank is neutral.

1. Neutral

Therefore, the element is not an acid or a base.

2. Acid, Base

That is NOT a balanced equation because:

c=4 o=2
c=4 o = 6

Not balanced, o has 6 and one side it has 4. It contradicts the Law of conversation of mass.

- - Since a element has a pH number of 7, meaning it is neutral. That element can be classified as neither a acid or a base.
- - No this is not balanced.
- - This is because its no balanced considering the o has 6 sides and 4 has one.
- - Because of this it is not true based on the com (conversion of mass) This law was made by Antoine Lavoisier and using his law I was able to know that it was not a balanced equation.

Which sample of matter can be separated into different substances by physical means?(1) LiCl(aq) (3) NH3(g)
(2) LiCl(s) (4) NH3(l)

Answers

The sample of matter that can be separated into different substances by physical means is NH₃(g), which represents gaseous ammonia. Therefore, option D is correct.

Physical means, such as changes in temperature or pressure, can cause NH3 gas to condense into a liquid state (NH₃(l)) or freeze into a solid state (NH₃(s)). These changes in physical state can be reversed, allowing the substance to be separated into its different forms without changing its chemical composition.

Gaseous ammonia consists of individual NH₃ molecules that are not strongly bonded to each other. This state can be separated into its individual molecules using physical means.

Learn more about ammonia, here:

brainly.com/question/29519032

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Answer:

(1) LiCl(aq)

Explanation:

Question:

Which sample of matter can be separated into different substances by physical means?

1. LiCl(aq) ✔

2. LiCl(s) ❌

3. NH₃(g) ❌

4. NH₃(ℓ) ❌

Reason:

LiCl(a) is a mixture of a compound and water. The LiCl can be separated from the water. All the other choices are compounds.

Related Vocabulary:

- Aqueous: a water solution , indicated by the notion "(aq)". For example, HCl(aq) indicated a water solution of hydrochloric acid.

- Matter: Anything that has mass and takes up space.

The net energy released or absorbed during a reversible chemical reaction is equal to(1) the activation energy of the endothermic reaction
(2) the activation energy of the exothermic reaction
(3) the difference between the potential energy of the products and the potential energy of the reactants
(4) the sum of the potential energy of the products and the potential energy of the reactants

Answers

Answer: The correct answer is Option 3.

Explanation:

The net energy absorbed or released in a reaction is known as total enthalpy change of the reaction. It is designated as $\Delta H_(rxn)$

It is defined as the difference between the total potential energy of the products and the total potential energy of the reactants. The equation for this is given by:

$\Delta H_(rxn)=\sum \Delta H_(products)-\sum \Delta H_(reactants)$

where,

$\Delta H_(products)$ = Total potential energy of the products

$\Delta H_(reactants)$ = Total potential energy of the reactants

Hence, the correct answer is Option 3.

3. The difference between the potential energy of the products and the potential energy of reactants.

ANSWER ASAP PLEASE Which of the following objects is the most dense?
Object A: mass = 50 g, volume = 5 cm³
Object B: mass = 50 g, volume = 10 cm³
Object C: mass = 10 g, volume = 50 cm³
Object D: mass = 5 g, volume = 50 cm³

Answers

Density is equal to mass divided by volume so the densest object will be the object that has the largest mass in the smallest area. In this case object A is the densest with a density of 10g/cm^3. I hope this helps. Let me know if anything is unclear.

Which of the following would be an example of applied science?

Answers

Answer:

Applied science is generally engineering, which develops technology, although there might be dialogue between basic science and applied science (research and development). Medical sciences such as medical microbiology are examples of applied sciences.

Explanation:

What type of reaction is
CH 4 (g)+2O 2 (g) CO 2 (g)+2H 2 O(g)

Answers

Answer: combustion

Explanation:

Combustion reactions can be identified by looking at the reactants and the products.

Usually, the reactants will be a hydrocarbon and oxygen. And the products will be CO2 and H2O

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