3. For the following reaction, calculate how many grams of each product are formed when 4.05 gof water is used.
2 H2O → 2 H2 + O2

Answers

Answer 1

Answer:

Answer:

$\large \boxed{\text{0.453 g of H$_(2)$; 3.60 g of O$_(2)$}}$

Explanation:

We will need a balanced chemical equation with masses and molar masses, so, let's gather all the information in one place.

MM: 2.016 32.00

2H₂O ⟶ 2H₂ + O₂

m/g: 4.05

1. Mass of hydrogen

(a) Moles of H₂O

$\text{Moles of H$_(2)$O} = \text{4.05 g H$_(2)$O}* \frac{\text{1 mol H$_(2)$O}}{\text{18.02 g H$_(2)$O }}= \text{0.2248 mol H$_(2)$O}$

(b) Moles of H₂

$\text{Moles of H$_(2)$} = \text{0.2248 mol H$_(2)$O } * \frac{\text{2 mol H$_(2)$}}{\text{2 mol H$_(2)$O }} = \text{0.2248 mol H$_(2)$}$

(c) Mass of H₂

$\text{Mass of H$_(2)$} =\text{0.2248 mol H$_(2)$} * \frac{\text{2.016 g H$_(2)$}}{\text{1 mol H$_(2)$}} = \textbf{0.453 g H$_(2)$}\n\n\text{The reaction produces $\large \boxed{\textbf{0.453 g}}$ of H$_(2)$}$

2. Mass of oxygen

(a) Moles of O₂

$\text{Moles of O$_(2)$} = \text{0.2248 mol H$_(2)$O } * \frac{\text{1 mol O$_(2)$}}{\text{2 mol H$_(2)$O}} = \text{0.1124 mol O$_(2)$}$

(b) Mass of O₂

$\text{Mass of O$_(2)$} =\text{0.1124 mol O$_(2)$} * \frac{\text{32.00 g O$_(2)$}}{\text{1 mol O$_(2)$}} = \textbf{3.60 g O$_(2)$}\n\n\text{The reaction produces $\large \boxed{\textbf{0.453 g of H$_(2)$ and 3.60 g of O$_(2)$}}$}$

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Water that flows back to the ocean is called?

Answers

Surface runoff

Explanation:

Water that flows back to the ocean is called surface runoff.

It is one of the different forms of water when it gets to the land surface.

Some of the water after rainfall and precipitation goes into the groundwater budget seeping through pore spaces.
This is called infiltration.
Other forms of water runs of the surface joining streams and lakes and even the ocean.
This component of the hydrologic cycle is called surface runoff.
Most water after rainfall collects as a surface runoff.
They generally flow down slope connecting with streams and lakes till they enter ocean as rivers.

learn more:

Rejuvenation of streams brainly.com/question/9259211

#learnwithBrainly

How do scientist communicate the results of an investigation?

Answers

Answer:

scientists often communicate their research results in three general ways:

1) One is to publish their results in peer-reviewed journals that can be ready by other scientists.

2) Two is to present their results at national and international conferences where other scientists can listen to presentations

Explanation:

Answer:money

Explanation:

Why do you need a reference point to know if an object is moving

Answers

to measure the distance and velocity

PLEASE HELP WILL GIVE BRAINLIEST

Answers

Answer:

I think It's either A. or C.

Explanation:

Answer:

Explanation:

HURRY PLEASE!!! The hydrogenation of unsaturated hydrocarbons isan important industrial process. Precious metals,
such as platinum and palladium, can greatly
increase the rate of this reaction. During this
process, the gaseous reactants are pumped
across a layer of metal powder. An example of this
process is shown below.
Describe how the metal probably increases the
reaction rate, identify whether this is an example of
homogeneous or heterogeneous catalysis, and
explain how you know.

Answers

A reducible molecule undergoes hydrogenation when hydrogen is added to it. Alkenes, alkynes, and aromatic molecules that are unsaturated are converted into saturated products through the hydrogenation of hydrocarbons.

What is hydrogenation ?

A chemical reaction known as hydrogenation occurs when molecular hydrogen interacts with another substance or element, typically in the presence of a catalyst made of nickel, palladium, or platinum. The method is frequently used to saturate or decrease organic molecules.

With the aid of nickel or palladium catalysts, unsaturated hydrocarbons are added to hydrogen in this process to create saturated hydrocarbons. Example: Applying an addition reaction to ethane in the presence of catalysts like nickel or palladium allows for the conversion of ethane.

When making plastics, unsaturated hydrocarbons are incredibly helpful organic substances. Egg cartons, disposable cups, and other practical things are made of polystyrene. Alkenes are utilized in the production of industrial compounds like alcohol.

Thus, A reducible molecule undergoes hydrogenation when hydrogen is added to it.

To learn more about hydrogenation, follow the link;

brainly.com/question/3767007

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Answer: The metal probably increases reaction rate by either holding reactant molecules in the correct orientation to react or by weakening or breaking bonds in reactant molecules to make them more reactive. This is an example of heterogeneous catalysis.

Explanation: It is heterogeneous catalysis because the catalyst is a solid and the reactants are gases. In heterogeneous catalysis, the catalyst is in a different phase than the reactants.

The more of this an object has, the more force it takes to move it