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nadya68 [22]
3 years ago
13

When time and temperature have not been properly managed it is known as

Chemistry
1 answer:
Inessa05 [86]3 years ago
3 0
Time/temperature danger try that answer
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Please please please help i seriously dont understand
deff fn [24]
I believe the answer would be 2 because, assuming the substance is water, at 50 degrees Celsius it whole be liquid, 100 degrees celsius is its boiling point and at 150 degrees Celsius water is steam.
7 0
3 years ago
In the correctly balanced equation, what are the coefficients for H2, Cl2, and HCl (respectively)? ___H2 + ___Cl2 → ___HCl 1,1,1
VARVARA [1.3K]
Hello mayaredalen. I do believe the exact corrected balanced equation will be that of 2 H2+2 Cl2=> 4 HCl. I'm really sorry if I gave you any wrong information. It's best to make sure before importing such a balance equation to your assignment.
4 0
3 years ago
Write an equation that shows the formation of a calcium ion from a neutral calcium atom.
34kurt
Calcium has a chemical symbol of Ca and has an atomic number of 20. This means that a neutral calcium ion will have 20 protons and 20 electrons. As part of Group 2 (alkaline earth metals), a calcium ion will be formed by ejecting 2 electrons from the neutral Ca atom. In chemical equation,
                           
                                           Ca --> Ca²⁺ + 2e⁻
6 0
4 years ago
Determination of Vitamin C Concentration by Redox Titration Pre-laboratory Questions 1. A solution is prepared by dissolving 2.0
Ierofanga [76]

Answer:

M = 0.011

Half reactions for reduction and oxidation:

oxidation:

HC12H6Cl2O2N + NH+ +2e- = HC12H8Cl2O2N

reduction:

C6H8O6 = C6H6O6 + 2H+ + 2e-

Explanation:

Molarity of the ascorbic acid solution:

Ascorbic acid molar mass = 173.12 g/mol

Then you have to find the mols:

mol = 2g/176,12 =0.011 mol Ascorbic acid.

Use the molarity equation:

Molarity (M) = 0.011 mol / 1 L = 0.011 M

Reactions for the reduction of DCPIP by ascorbic acid:

These reactions have to be balanced by the oxide reduction method.

Because it involves the transfer of electrons from ascorbic acid to the DCPIP.

Remember: when is happens a reduction, also happens oxidation.

To see the reactions watch the images attached.

The first one has the calculus for the molarity of the ascorbic acid solution.

The second one has the reactions for the reduction and oxidation of the compounds.

3 0
4 years ago
Jenna took an open bowl of leftover mashed potatoes from the refrigerator. She determined that chemical changes occurred since t
Kamila [148]

Answer:

maybe the potatoes took a different form? They smell different, look different taste different, etc.

Explanation:

5 0
3 years ago
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