Consider the following balanced equation:
2KCIO3 → 2KCl + 302
How many grams of O2 will be obtained by decomposing
98.1 grams of KClO3?
Оа
38.4 grams
b
17.1 grams
Ос
25.6 grams
76.8 grams

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Answer:

In some cases, changes in land use may have positive effects, such as increasing habitat (as a result of deliberate habitat restoration measures) and reclamation of previously contaminated lands for urban/suburban development.

Explanation:

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Answer:

4 moles

Explanation:

Oxygen gas is O2   (two atoms of oxygen)

2 H2 + O2  = 2 H2 O    

          one mole of oxygen gas produces TWO moles of water

               so you need 4 moles of O2 to produce 8 moles of water

Answer:

Grasshoppers are a good source of unsaturated fats and they can lower risk of diseases.

Explanation:

Answer:

Increasing the H+/H3O+ will decrease the pH, while increasing the OH- ions will increase the pH

Explanation:

so pH=-log(H), which means that the smaller H gets to 0, the more the pH rises. The larger the H+ gets, the smaller the pH
if H is 1, then pH is 0
if H is 0.1, then pH is 1
if H is 0.01, then pH is 2
and so on
if H is 0.00000000000001, then the pH is 14
When OH goes up, H goes down, so
if OH is 0.00000000000001, then the ph is 0
if OH is 0.0000000000001, then the pH is 1
and so on
If the OH is 1, then the pH is 14

Answer:

89.6 liters

Explanation:

A STP (standard temperature and pressure) ONE mole of any idea gas will occupies 22.4 liters. So,...

4 moles x 22.4 L/mol = 89.6 liters

8.96 L is the answer

Answer: 0.130 L

Explanation:

In the important industrial process for producing ammonia (the Haber Process), the overall reaction is:

N2(g) + 3H2(g) → 2NH3(g) + 100.4 kJ

A yield of NH3 of approximately 98% can be obtained at 200°C and 1,000 atmospheres of pressure.

This reaction is: Endothermic

Answer:

the correct answer false

Explanation:

Examples of agroecology method use are in Burkina Faso are conservation tillage, green manures, natural fertilisers, biological predators and so on.

Agroecology refer to an approach that use ecological processes in agricultural production systems.

The benefits of Agroecology is that it help to protect, restore and also improve agriculture and food systems when there is climate shocks and unfavorable weather conditions.

Therefore, Examples of agroecology method use are in Burkina Faso are conservation tillage, green manures, natural fertilisers, biological predators and so on.

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Answer:

To investigate the effect of changing the conditions on the rate of a reaction.

Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g

The volume of hydrogen gas produced can be measured using a gas syringe.

Method:-

- Support a gas syringe with a stand, boss and clamp.

- Using a measuring cylinder, add 50 cm3 of dilute hydrochloric acid to a conical flask.

- Add a 3 cm piece of magnesium ribbon to the flask. Immediately connect the gas syringe and start a stop clock.

- Record the volume of gas produced every 5 seconds. Continue timing until no more gas is given off.

- When the reaction is complete, clean the apparatus as directed by your teacher.

- Repeat steps 1 to 5 with different concentrations of hydrochloric acid.

I hope my answer helps you.

Explanation:

low or no reactivity ....

Neon and argon are both in Group 18 of the periodic table. The property that they are most likely to share is low or no reactivity. The correct option is d.

A chemical element found in the periodic table is argon. It is the third most common gas in the atmosphere and has an atomic number of 18.

In the periodic table, neon is a chemical element. It is a monatomic, noble gas with the atomic number 10 that is found in the environment.

Although a few liquid molecules do rise to the top, the vast majority stay close to the bottom. Furthermore, the molecules in the gas phase move more swiftly than those in the liquid phase.

Therefore, the correct option is d, low, or no reactivity regarding the mutual property of argon and neon.

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Answer:

circulation

Explanation:

The movement of the blood through the heart and around the body through the narrow vessels is called circulation which makes up the cardiovascular system.

Answer:

Circulation

Explanation

digestion is the process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body and its the only one that makes sence

Answer:

0.72 moles of hydrochloric acid are needed to completely react with 0.36 mol of lead.

Explanation:

I hope this helps you! :)

As the volume is decreased and the pressure is increased to the given value, the temperature of the gas increases to 81.67°C.

Given the data in the question;

Combined gas law brings together both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that "the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.

It is expressed as;

[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}[/tex]

We substitute our given values into the expression above to determine the new temperature.

[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}\\\\P_1V_1T_2 = P_2V_2T_1\\\\T_2 = \frac{P_2V_2T_1}{P_1V_1}\\T_2 = \frac{1.0atm\ *\ 0.4L\ *\ 350.15K}{0.789474atm\ *\ 0.5L} \\\\T_2 = \frac{140.06LatmK}{0.394737Latm}\\ \\T_2 = 354.82K\\\\T_2 = 81.67^oC[/tex]

Therefore, as the volume is decreased and the pressure is increased to the given value, the temperature of the gas increases to 81.67°C.

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Answer:

Count each type of atom in reactants and products. ...

Place coefficients, as needed, in front of the symbols or formulas to increase the number of atoms or molecules of the substances. ...

Repeat steps 1 and 2 until the equation is balanced

Explanation:

Step 1: Coefficients Versus Subscripts. When approaching a chemical equation, it is important that you understand the difference between coefficients and subscripts. ...

Step 2: Sum the Atoms. ...

Step 3: Balance the First Element. ...

Step 4: Repeat for the Other Elements. ...

Step 5: Tips.

Answer:

2C6H6 + 15O2 = 12CO2 + 6H2O

Explanation:

This is a combustion reaction meaning a substance (in this case Benzene or C6H6) reacts with oxygen gas (O2) and releases energy in the form of light and heat.

so Benzene (C6H6) and Dioxygen (O2) are reactants meaning they are on the left side of the equation

Carbon Dioxide (CO2) and Water (H2O) are the products meaning they are on the right side of the equation

To balance an equation you need an equal amount of each element/compound/polyatomic on each side of the equation

so 2C6H6 + 15O2 = 12CO2 + 6H2O:

(2•6) = 12 C = (12•C) = 12 C ~ 12C = 12C

(2•6) = 12 H = (2•6) = 12 H ~ 12H = 12H

(15•2) = 30 O2 = [(12•2) • (6•1)] = 30 O2

~ 30 O2 = 30 O2

so the equation is now balanced

feel free to ask if you have any other questions

hope this helps :)

The concentration of the HCl solution needed to neutralize 25 mL of 0.2 M NaOH is 0.25 M

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

CaVa / CbVb = nA / nB

(Ca × 20) / (0.2 × 25) = 1

(Ca × 20) / 5  = 1

Cross multiply

Ca × 20  = 5

Divide both side by 20

Ca = 5 / 20

Ca = 0.25 M

Thus, the concentration of the HCl solution is 0. 25 M

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Answer:

5.55moles

Explanation:

[tex]2moles \: of \: aluminium = 3 \: moles \: of \: h2 \\ 3.7moles \: aluminium = x \\ 2x = 3.7 \times 3 \\ 2x = 11.1 \\ x = \frac{11.1}{2 } \\ x = 5.55moles[/tex]

Based on the fact that only herbicide was used to grow the corn, this means that the resistance type of the corn are caterpillars.

Herbicide are chemicals used to control and kill weeds that could hinder crop production while insecticides are chemicals used to control insect pests.

According to this question, a field of corn was grown with 250 L/ha herbicide and no insecticide. This means that only herbs or weeds are being controlled on the field.

Therefore, it can be said that the corn plants are the type that are resistant to caterpillars, which are examples of insects.

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Answer:

I am first time from from from from from from

Answer:

The first one goes second.

The thirth one goes first,

and the second goes third.

Explanation:

Answer:

immediately flush the affected area gently with lukewarm water for at least 30 uninterrupted minutes

Explanation:

If strong acid comes into contact with the skin, immediately wash the affected area gently with lukewarm water for at least 30 minutes and get medical attention immediately.

Exposure to strong acids such as sulphuric acid can occur as skin contact, ingestion, or inhalation of vapors. Each kind of exposure can create serious hazards to health and should be managed quickly and appropriately by medical professionals to reduce damage and health risks.

If strong acid comes into contact with the skin, quickly flush the affected area gently with cold water for at least 30 minutes and seek medical attention immediately. If strong acid gets into your eyes, then flush the eye(s) with water for 30 minutes.

If accidentally ingest strong acid, rinse your mouth with water immediately. But do not induce vomiting and continually rinse your mouth with water. If you inhale strong acid aerosols, get fresh air, and medical attention immediately.

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Answer:

Cu(NO 3) 2 (aq) + 2 NaOH (aq) → Cu(OH) 2 (s) + 2 NaNO 3 (aq) This is a precipitation reaction: Cu(OH) 2 is the formed precipitate.

Explanation:

Answer:

A chemical symbol is a notation of one or two letters representing a chemical element.

Na2co3`s use :

It is used in photography

It is used as bleaching of wool

The biome which comprises most of Antarctica is the cold desert or polar desert.

This is defined as an area which is classified according to the species that live there.

The climate of Antarctica is very cold  with very little life forms which is why it is referred to as a cold desert or polar desert.

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Grey basically is formed by combining black and white colors together.

In this case, one would have to explore other options.

The following color combinations can form grey:

By adjusting the other colors, variations of hue will be observed. It is to be noted that the Gizmo is unaccessible on this platform hence the general answer.

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Answer:

It's b

Explanation:

Answer:

select one :c

select two:d

The substance Z will be a poison if it produces adverse effects on th body even in small quantities.

A poison is a substance which when ingested into the body of an organism causes harm or injury to that organism.

Poisons can be in gaseous, solid or liquid form.

Poisons may be natural or synthetic in nature.

The characteristics of poison include:

Therefore, the substance Z will be a poison if it produces adverse effects on th body even in small quantities.

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