An acid-base indicator is used in what type of reaction?

Answers

Answer 1

Answer: Acid - base indicators (also known as pH indicators) are substances which change color with pH. They are usually weak acids or bases. you use them if you want to know if a solution is an acid or it it's a base

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A supervisor spends a day inspecting a nuclear plant for potential radiation leaks. She has to move throughout the plant inspecting all the equipment and machinery. She needs to take two different radiation detection devices to help ensure her safety and to find radiation leaks. She needs the results immediately. Which two devices would be the best choices for the task?
The sense of touch is produced by______ within the skin. dermis,muscles,neurons,feelings
a molecule of a compound contains a total of 10 hydrogen atoms and has the general formula CnH2n+2 which prefix is used in the name of this compound?
Write the number in scientific notation. 0.00069
[AZ][B]^4=K[AB2]^2 As this reaction takes place at higher temperatures, it is observed that the equilibrium shifts toward the products. The reaction is ? 1) exothermic 2)endothermic

Which structural formula correctly represents an organic compound

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A skeletal formula is usually used for organic compounds

How many moles of calcium chloride would be produced by the reaction below when 53.2 milliliters of water are produced, if the density of water is 0.987 g/mL? Show all steps of your calculations as well as the final answer HCl + Ca(OH) 2 → H2O + CaCl2

Answers

All the steps are bieng shown below :
$Ca(OH)2+ 2HCl → CaCl2 + 2H20$
Mass of water = .987 * 53.2 = 52.5084 g
Mole of water = 52.5084g/ 18= 2.917 mol
Mole of CaCl2= 2.917 mol / 2 = 1.458

This answer will definitely help you. Regards!

What is the name of the movement of the Earth around the Sun as pointed out by letter J.

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it is called the Earth's rotation

What is the ∆G for the following reaction under standard conditions (T = 298 K) for the formation of NH4NO3(s)? 2NH3(g) + 2O2(g) NH4NO3(s) + H2O(l)Given:
NH4NO3(s): ∆Hf = -365.56 kJ ∆Sf = 151.08 J/K.
NH3(g): ∆Hf = -46.11 kJ ∆Sf = 192.45 J/K.
H2O(l): ∆Hf = -285.830 kJ ∆Sf = 69.91 J/K.
O2(g): ∆Hf = 0.00 kJ ∆Sf = 205 J/K.

Answers

∆G = ∆H - T∆S

NH3: ∆G = -46.11x10^3 - (298)(192.45) = -103460.1 J
O2: ∆G = 0 - (298)(205) = -61090 J
NH4NO3: ∆G = -365.56x10^3 - (298)(151.08) = -410581.84 J
H2O: ∆G = -285.830x10^3 - (298)69.91) = -306663.18 J

∆Grex = ∆Gproducts - ∆Greactants
∆Grex = (-410581.84 + -306663.18) - (-103460.1/2 + -61090/2)
∆Grex =-634969.97 J/mol = -634.97 kJ/mol

In the formation of an ionic compound, electrons are shared between atoms. a. true
b. false

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Its False, because in the formation of an ionic compound, an atom gains or loses an electron.

true i just now because i did it in school

What chemical change is magnetizing steel

Answers

Magnetizing steel is a physical change, not a chemical change.

Magnetizing steel is a physical change, not a chemical change because it does not change the chemical composition of the steel.

A chemical change is a change in which new substances are formed. This is because the atoms in the original substances are rearranged to form new atoms or molecules. There is no chemical change when magnetizing steel. For example, when iron rusts, it reacts with oxygen to form a new substance called iron oxide.

A physical change is a change in which the form of a substance is changed, but the substanceitself is not changed. For example, when you melt ice, you are changing the form of water from a solid to a liquid, but the water itself is not changed.

When you magnetize steel, you are simply aligning the magnetic domains in the steel. Magnetic domains are regions of a material that have a net magnetic field. When the magnetic domains are aligned, the steel becomes magnetized.

Magnetizing steel does not change the chemical composition of the steel. The steel is still made up of the same atoms, and the atoms are still arranged in the same way. The only difference is that the magnetic domains are aligned, which gives the steel its magnetic properties.

To know more about Magnetizing steel here

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If there are 4.5 x 1020 atoms of Silver are present, then how many moles of Silver are there? Question 1 Answer a. 0.081 moles b. 12.4 moles c. 0.0007 moles d. 1,338 moles