What is the name for Na20?

Answer:

The coefficient of O2 when the equation is completely balanced is 19

Explanation:

The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts

Left side: 6 carbon, 14 hydrogen and 2 oxygen.

Right side: 1 carbon, 2 hydrogen and 3 oxygen.

The coefficients of each molecule below indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction. So, in this case you can see that in the reaction there is:

Left side: 2*6=12 carbon, 2*14=28 hydrogen and COEFFICIENT OF OXYGEN*2=? oxygen.

Right side: 12*1=12 carbon, 14*2=28 hydrogen and 12*2+14*1=38 oxygen.

As mentioned, you must have the same amount of each element on both sides. In this case, carbon and hydrogen have the same amount on both sides, so it only remains to balance the oxygen. For that, you must calculate the "OXYGEN COEFFICIENT" on the left side of the equation so that there are 38 oxygen atoms, just like the right side. This is expressed as:

COEFFICIENT OF OXYGEN*2=38

From the previous expression you can obtain:

COEFFICIENT OF OXYGEN=19

So, the coefficient of O2 when the equation is completely balanced is 19

1. Answer is d. all of the above.

Climate can be defined as the data collection of weather conditions of a long period of time in a certain area. The weather conditions that affect to the climate are temperature, precipitation, atmospheric pressure, wind and so on. Any changes in weather can change the global climate.

2. Answer is c. ozone.

Trees release oxygen and water vapor into the atmosphere but not ozone. The oxygen gas is released by trees as the by-product of photosynthesis. This is the natural way of production of oxygen gas. Water vapor can be released due to the transpiration of trees.

1. The correct answer is option D. all of the above.

Global climate change will bring changes in temperature such as heat waves, droughts, volcanic eruption, deforestation, extinction of species due to large shift in temperatures, changes in precipitation such as  heavy snowfall, ocean acidification, and ozone depletion.  

2. The correct answer is option C, ozone.  

Ozone is not released by trees into the atmosphere. Plants have chlorophyll and in the presence of sunlight plants uses sunlight and carbon dioxide to form glucose and oxygen.

6CO₂ + 6H₂O  ->  C₆H₁₂O₆ + 6O₂

During transpiration plants exhale water vapor through the stomata, tiny pores that are found on the surface of the leaves.

Thus trees never release ozone into the atmosphere.

Answer:

it is 92

Explanation:

Atomic Mass 238.029 atomic mass units

Number of Protons 92

Number of Neutrons 146

Number of Electrons 92

Answer:

92

Explanation:

because it is the 92nd element on the table it has 92 protons

Answer:

1.81 liters of KCl solution

Explanation:

Molarity is expressed as:

Solving for Liters of solution:

Liters of solution = (1)

Using the molecular weight fo the KCl to find the moles of solute:

Replacing in the formula (1):

Liters of solution =

Liters of solution = 1.81 liters