HELP PLS (IT IS NOT THE THIRD ONE)

Let's see the balanced equation

[tex]\\ \rm\Rrightarrow 2Ca+O_2\longrightarrow 2CaO[/tex]

Hence

As moles are equal given

Answer:

Insecticides are not good for health. Their use is harmful to other animals, birds and humans. But, without their use, it is not possible to grow the required amount of food. So, "the use of insecticide is not an interest, but an obligation".

Answer:

I think C is the answer

Explanation:

because Mitosis results in two identical daughter cells......

The molarity of a solution that has 26 moles of NaCl in 2.7L of water is 9.63M.

The molarity of a solution can be calculated by dividing the number of moles of the solute by the volume of the solution as follows:

Molarity = no of moles ÷ volume

According to this question, a solution has 26 moles of NaCl in 2. 7 l of water. The molarity is as follows:

Molarity = 26mol ÷ 2.7L

Molarity = 9.6M.

Therefore, the molarity of a solution that has 26 moles of NaCl in 2.7L of water is 9.63M.

Learn more about molarity at: https://brainly.com/question/2817451

[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]

The Correct choice is : D

if temperature is held constant, then they have same average kinetic Energy because there's no change in energy caused by transfer of heat or something.

According to the forces of attraction, if temperature is constant the particles have the same average kinetic energy.

Forces of attraction is defined as  a force by  means of which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in  case of gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as  the melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

Learn more about forces of attraction,here:

https://brainly.com/question/23841038

#SPJ7

Hii there !

The reaction accompanying production of water in this case would be -

[tex]\green{ \underline { \boxed{ \sf{H_2+ \frac{1}{2}O_2\longrightarrow H_2O}}}}[/tex]

Thus ,by observing the reaction, we can conclude that 1 mole of Hydrogen (H[tex]_2[/tex])react with 1/2 mole of oxygen(O[tex]_2[/tex])to produce 1 mole of water (H[tex]_2[/tex]O)

[tex]\implies[/tex]Therefore, 37.0 moles of hydrogen(H[tex]_2[/tex]) will be required to produce 37.0 moles of water.

Hope it helps.

Answer:

temperatures

enzyme activity

Answer:

A) Nuculear

Explanation:

Nuclear powerplants are danguorous for the ecosystem and incase of an exsplosion nuclear is the hardest to recover from. Especially if you know the story about Chernobyl blow up. many animals began to grow diffrent mutations and evryone had to evacuate from having desieses and mutations.

Hoped this helped...

Answer:

2H2O

It's a double displacement reaction

Answer:

true

Explanation:

Covalent bonds are formed through the overlap of half-filled valence orbitals. Because of the overlapping, it is most probable that electrons are located within the region of the bond.

In order to make a covalent bond, the orbitals on each atom in the bond must overlap. Therefore, the given statement is true.

A covalent bond is an electron exchange usually results in the production of electron pairs between atoms. These electron couples are referred to as bonding pairs as well as sharing pairs. Covalent bonding seems to be the permanent equilibrium of atoms' forces of attraction versus attraction when atoms share electrons.

Because to electron sharing, each atom in a number of molecules can achieve the corresponding amount of the valence shell, resulting inside a stable electronic configuration. In organic chemistry, covalent bonds are far more common than ionic ones. In order to make a covalent bond, the orbitals on each atom in the bond must overlap.

Therefore, the given statement is true.

To learn more about covalent bond, here:

https://brainly.com/question/12661797

#SPJ6

Answer:

2H2 + O2 —-> 2H2O

The mole ratio of H2 to H2O is 2 : 2 = 1:1

4 moles of H2 = 4 moles of H2O

Moles of H20 = 4mol

Molar mass of H2O = 18g/mol

Mass = moles X Molar mass

= 4mol x 18g/mol

= 72g

Mass of H2O is 72g

For an impure sample of potassium hydrogen phthalate, the percentage of potassium hydrogen phthalate is

m'=39.3%

Generally, the equation for the mol base  is mathematically given as

mol base = M*V

mol base = 0.152*35.61

mol base = 5.41272 mmol

In conclusion

mass = mmol/1000*MW

m== 5.41272 /1000*204.22

m= 1.1053 g of KHP

Hence, m'=39.3%

Read more about Chemical reaction

https://brainly.com/question/16416932

Answer:

When hydrochloric acid comes into contact with calcium carbonate, the following chemical reaction ensues: CaCO3 + 2HCl → CaCl + CO2 + H2O, which provides acid neutralization alongside the formation of byproducts

Answer:

C) liquid

Explanation:

edge 2023

Explanation:

1,it's crystal clear water and unique wild life.

2,It is home to many unique species animals and plants.

3, It's sediment have not been scoured by overriding continental ice sheet

The strategy that is not a suggested way of treating or preventing a communicable disease is to receive a vaccine while you are ill from a virus.

A communicable disease is a type of disease that can spread from one person to another in the following ways:

There are various ways to prevent the spread of communicable diseases which include:

To receive a vaccine while ill from a virus is not advisable because there may be chances of spreading your illness to health care workers who are administering the vaccine.

Learn more about communicable diseases here:

https://brainly.com/question/25476918

Answer:

Temperature is the average kinetic energy of particles of an object. Warmer objects have faster particles and higher temperatures. If two objects have the same mass, the object with the higher temperature has greater thermal energy. Temperature is measured with a thermometer.

The temperature change if 400 J of energy is added to 10 grams of water is 9.57°C.

The temperature change of a calorimeter can be calculated using the following expression:

E = mc∆T

Where;

400 = 10 × 4.18 × ∆T

400 = 41.8∆T

∆T = 400/41.8

∆T = 9.57°C

Therefore, the temperature change if 400 J of energy is added to 10 grams of water is 9.57°C.

Learn more about change in temperature at: https://brainly.com/question/11464844

Answer:

Low pressure and high temperature :)

Have an amazing day!!

Please rate and mark brainiest!!

Answer:

C

Explanation:

It denotes a loss of 2 protons and 2 neutrons for the atom. As a result, the atom released an alpha particle, which is composed of two protons and two neutrons, hence option C is correct.

The structure of alpha particles, also known as alpha rays or alpha radiation, is similar to that of the helium-4 nucleus and is made up of two protons and two neutrons bonded together.

They often result from the alpha decay process, although they can also result from other processes.

If an atom has 84 protons and 86 neutrons, after the reaction, the atom has 82 protons and 84 neutrons, it suggests that the atom has lost 2 protons and 2 neutrons.

Therefore, the atom emitted an alpha particle in a nuclear reaction, hence option C is correct.

Learn more about alpha particle, here:

https://brainly.com/question/234229

#SPJ5

According to Avogadro's law equal volume of all gases at the same temperature and pressure contain equal number of molecules. At STP one mole of any gas behaving ideally occupies a volume of 22.414 L.

The volume occupied by one mole of a substance at a given temperature and pressure is defined as the molar volume at that temperature and pressure. The value of molar volume of an ideal gas at STP is important in stoichiometric calculations.

At STP, the number of molecules of a gas is given as:

Number of molecules of a gas (N) = V₀ in L /  22.414 × 6.022 × 10²³

Here  V₀ in L = 16500 = 16.5 L

N =  16.5 / 22.414  × 6.022 × 10²³

N = 4.433 × 10²³

Thus the number of molecules present is 4.432 × 10²³.

To know more about number of molecules, visit;

https://brainly.com/question/19109598

#SPJ2

Glycerol has the stronger intermolecular attraction because it is more viscous and has a larger molar mass.

This is the ability of substances to resist flow and is common among fluids such as air and liquid.

Glycerol however has a stronger intermolecular attraction because it is more viscous and has a larger molar mass because they have a direct relationship.

Read more about Viscosity here https://brainly.com/question/2684299

#SPJ4

Answer:

A-glycerol because it has a larger molar mass

Explanation:

Edge 2022 :)

Answer:

1. the imbalance of positive and negative charges.

Explanation

The electric dipole moment is a measure of the separation of positive and negative electrical charges within a system, that is, a measure of the system's overall polarity.

2.The atmosphere has recently changed and is mostly greenhouse gases, which have a large impact on climate

Explanation.

They cause climate change by trapping heat, and they also contribute to respiratory disease from smog and air pollution. Extreme weather, food supply disruptions, and increased wildfires are other effects of climate change caused by greenhouse gases.

3.melted ice caps

explanation

A stronger greenhouse effect will warm the ocean and partially melt glaciers and ice sheets, increasing sea level. Ocean water also will expand if it warms overexcessively.

4.Yes, the greenhouse effect keeps the planet warm enough to support life.

Explanation

The greenhouse effect is a good thing. It warms the planet to its comfortable average of 59 degrees Fahrenheit (15 degrees Celsius) and keeps life on earth, well, livable. Without it the world would be a frozen, uninhabitable place, more like Mars.

5.nitrous oxide.

Explanation

There are several different types of greenhouse gases. The major ones are carbon dioxide, water vapor, methane, and nitrous oxide. These gas molecules all are made of three or more atoms. The atoms are held together loosely enough that they vibrate when they absorb heat.

The phrase which  describes a dipole moment is the separation of positive and negative charges,the  statement best summarizes the presence of greenhouse gases in the atmosphere , the atmosphere is mostly non-greenhouse gases, but the small amount of greenhouse gases in an ecosystem have a large impact on climate.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .The more glaciers is the consequence is due to increased production of greenhouse gases.The greenhouse effect keeps the planet warm enough to support life. Nitrous oxide molecule acts as a greenhouse gas.

Learn more about ecosystem,here:

https://brainly.com/question/13979184

#SPJ5

The genetic constitution of an individual, group, or class.

Explanation:

transmission of mechanisms of inherited characteristics of organisms

Answer:a trait that can be passed down is within your gens Evan if you don’t show the trait you still have the ability to pass it down

Explanation:

Answer:

A Winter storm usually does not come with a warm fronthey warm front.

Explanation:

When the front passes over an area it means to change in the weather. Many. Many friends cause weather events such as rain thunderstorms gusty winds tornadoes and hurricanes.

Answer:

cyclohexene I think that's the answer

Answer:

2 significant figures

Good luck with your work! :)

Answer:

The pH scale measures whether there is more hydronium or hydroxide in a solution. In other words, it tells us how basic or acidic the solution is. A lower pH means something is more acidic, also known as a stronger acid. A higher pH means it is more alkaline or a stronger base.

Answer:

Advanced Pharmaceutics Inc

Explanation:

Advanced Pharmaceutics Inc

somehow I know this acroynom