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alexira [117]
4 years ago
8

Describe the energy transformations that occur when a piece of wood is burned?

Chemistry
2 answers:
alukav5142 [94]4 years ago
8 0

Answer: Fire

Explanation: Cause it is what it is

viva [34]4 years ago
7 0

Answer: Heat and Light.

Explanation: When the wood is burned, it combines with oxygen in air to partake in a combustion reaction which is exothermic. It coverts the chemical energy in the wood and release them as light and heat. Stored potential energy (in the form of chemical energy) in the log is released due to heating by other excited atoms. This chemical reaction is called combustion and requires oxygen. Combustion changes the potential chemical energy into kinetic energy in the form of heat.

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Sodium hydrogen carbonate , also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid ind
user100 [1]

Answer:

3.8x10^{-1}gNaHCO_3

Explanation:

Hello,

This is a typical case in which the following chemical reaction is carried out:

HCl+NaHCO_3-->NaCl+H_2O+CO2

Since 50 mL of a 0.091M solution of HCl is employed, we perform the shown below stoichiometric calculation to find the sodium hydrogen carbonate grams that must be ingested by the woman:

m_{NaHCO_3}=0.050L*0.091\frac{molHCl}{L}*\frac{1molNaHCO_3}{1molHCl}*\frac{84gNaHCO_3}{1molNaHCO_3} =3.8x10^{-1}gNaHCO_3

Best regards.

3 0
3 years ago
10. The diagram below shows the sun, Earth, and the moon.
kotykmax [81]

Answer:

I think a lunar eclipse

5 0
3 years ago
Read 2 more answers
The illustration below shows the Gulf Stream carrying warm water up the east coast of America on its way to Western Europe. Thes
gayaneshka [121]

Answer: The sun heats earth’s oceans causing convection currents to travel from the equator to the poles

Explanation: found it on a quizz thingy :D

6 0
4 years ago
The Mass of the paper before being bumed is 50% how much mass should there be after
neonofarm [45]

0%

Explanation:

IF YOU BURNED THE PAPER THERE WILL BE ONLY ASHES

3 0
2 years ago
What is the molarity of a solution that is composed of 10 grams of Sodium Chloride ( NaCl) dissolved in 3.50 L of water
Gennadij [26K]

<u>Answer:</u> The molarity of solution will be 0.049 M

<u>Explanation:</u>

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

\text{Molarity of solution}=\frac{\text{Given mass of solute}}{\text{Molar mass of solute}\times \text{Volume of solution (L)}}

We are given:

Given mass of sodium chloride = 10 g

Molar mass of sodium chloride = 58.44 g/mol

Volume of solution = 3.50 L

Putting values in above equation:

\text{Molarity of NaCl}=\frac{10 g}{58.44g/mol\times 3.50}\\\\\text{Molarity of NaCl}=0.049M

Hence, the molarity of solution will be 0.049 M

6 0
3 years ago
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