CHEMISTRY HIGH SCHOOL

Which term best describes the stored energy based on the position or chemical composition of an object?a. kinetic energy
b. potential energy
c. activation energy
d. thermodynamic energy

Answers

Answer 1
Answer:

Answer: Potential Energy

Explanation:

The term that best describes the stored energy based on the position or chemical composition of an object is its potential energy. It is the energy possessed by a body due to its virtue of its position. Any body at rest possesses this energy because they are in one position (not moving).

An object thrown up possesses potential energy at its maximum height before falling under gravity because the object is at rest at the maximum height.
Answer 2
Answer: Stored energy is described as potential energy

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CH3COOH mc015-1.jpg CH3COO– (aq) + H+(aq) What will happen to the chemical equilibrium of the solution if CH3COONa is added?

Answers

The equilibrium will shift to the left or the backward reaction since addition of CH3COONa will add more CH3COO- ions to the solution. The formation of reactants are promoted.

A chemical system that resists changes in pH and prevents large swings in the pH is called __________. a) A base b) An acid c) An anion d) A buffer

Answers

Answer:

Explanation:

okay so first add two to four and the ten

The Solvay process is a multistep industrial process used to produce washing soda, Na2CO3(s). In the last step of the Solvay process, NaHCO3(s) is heated to 300°C, producing washing soda, water, and carbon dioxide. This reaction is represented by the balanced equation below.2NaHCO3(s) + heat ==> Na2CO3(s) + H2O(g) + CO2(g)

Write the IUPAC name for washing soda.

Answers

Its IUPAC name is sodium carbonate. It is also known as soda ash. It is the water soluble sodium salt of carbonic acid and occurs as a crystalline heptahydrate. Sodium carbonate has an alkaline taste and when in solution forms a basic solution. One important application is that it is used commonly as a water softener.

What do you wrap your sandwich in? (pun, answer must be from the periodic table)

Answers

Final answer:

You can wrap your sandwich in Tin, an element from the periodic table.

Explanation:

The periodic table is a chart that organizes all known elements based on their atomic number, symbol, and atomic mass. To wrap a sandwich, you can use the element Tin, which has the atomic symbol Sn and atomic number 50. Tin is a soft, malleable metal that is often used as a coating for other metals to prevent corrosion. It can be melted and shaped into thin sheets, making it suitable for wrapping a sandwich.

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Final answer:

The pun answer to the question 'what do you wrap your sandwich in?' is 'Aluminum', because aluminum is an element from the periodic table and aluminum foil is often used to wrap sandwiches.

Explanation:

The pun in this question refers to an element from the periodic table to humorously answer the question "What do you wrap your sandwich in?". One possible response could be: "You wrap your sandwich in Aluminum", since the word "wrap" is commonly associated with aluminum foil, which is used to wrap and protect food, like a sandwich. Aluminium is a chemical element in the periodic table with the symbol Al and atomic number 13. It's a silvery-white, soft, non-magnetic and ductile metal, which makes it ideal for creating thin, flexible sheets like aluminum foil for food wrap.

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For metalloids on the periodic table, how do the group number and the period number relate? A. The lower the group number, the lower the period numbers, so the metalloids are found in a diagonal moving down from left to right.
B.The lower the group number, the higher the period numbers, so the metalloids are found in a diagonal moving up from left to right.
C.The higher the group number, the lower the period numbers, so the metalloids are found in a diagonal moving down from left to right.
D.The higher the group number, the higher the period numbers, so the metalloids are found in a diagonal moving up from left to right.

Answers

Answer : The correct option is A.

Explanation :

Metalloid : Metaloids are the elements whose properties lie between the metals and non-metals.

There are six commonly elements which are boron, silicon, germanium, arsenic, antimony and tellurium. The rare elements are polonium and astatine.

The relation between the group number and period number of metalloid is that the lower the group number, the lower the period numbers and the metalloids are found in a diagonal moving down from left to right in the periodic table.

Answer:

(A) The lower the group number, the lower the period numbers, so the metalloids are found in a diagonal moving down from left to right.

Explanation:

Search up a periodic table and you will see.

I also took the quiz and got 100.

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The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of 58.1 grams in one mole. How many carbon atoms are in 3.00 g of butane?

Answers

First, calculate the number of mols of C4H10 in 3.00 g of C4H10.

3.00g C4H10 / 58.1 g C4H10 = .0516 mol C4H10
There are 4 atoms of carbon per mol of C4H10
Multiply .0516 mol C4H10 by 4 (number of atoms of carbon)=.20654 mol Carbon.
To convert to atoms, multiply that by avogadro's number, 6.022 x 10^23
which equals 1.2438 x 10^23 atoms of Carbon

Answer:

1.2433 *10^23 carbon atoms

Explanation:

First you need to calculate the grams of the empirical formula.

C4H10

Carbon = 12.01 g x 4

Hydrogen = 1.008 x 10

Sum those together to get = 58.12 g

Divide the 3.00g by the total g in the compound.

3.00/58.12 = 0.0516

Then times 0.0516 by the number of carbon atoms

0.0516 x 4 = .20646

Then multiple by Avogadro's number

.20646 x 6.022x10^23 = 1.2433x10^23

Rounded to 1.24x10^23 carbon atoms
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