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oksano4ka [1.4K]
2 years ago
8

Please help me I will give you the brain thing and extra points. image below

Chemistry
2 answers:
olga55 [171]2 years ago
7 0

Answer:

b

Explanation:

dexar [7]2 years ago
3 0
I think the answer is b :)
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A(n) ____________________ is a compound that turns litmus blue and is often found in soaps and detergents.
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B. base
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3 years ago
State the guideline you can use to predict the formula of:
Cerrena [4.2K]

We can predict formula of ionic compounds by:

  • Take a look at where the elements are listed on the periodic table.
  • The amount of electrons that an element would need to gain or lose in order to resemble an atom of a nearby noble gas is one of the similarities that atoms in the same column as one another (group) tend to display.
  • Alkali metal group I ions have +1 charges.
  • Alkaline earth metals (group 2 ions) have a +2 charge.
  • Nonmetal group 6 ions have a charge of -2.
  • Halides in group 7 have a -1 charge.
  • The charges of the transition metals cannot be predicted in a straightforward manner.
  • Check out a table of charges (valences) to see potential values. The +1, +2, and +3 charges are most frequently employed in beginning and general chemistry courses.
  • Keep in mind that the positive ion is always stated first when writing an ionic compound's formula.

These are the few guidelines we can use to product formula.

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4 0
1 year ago
An enzyme can catalyze a reaction with either of two substrates, S1 or S2. The Km for S1 was found to be 2.0 mM, and the Km, for
Lera25 [3.4K]

Answer:

100.5 ≈ 101

Explanation:

Km for S1 = 2.0 mM

Km for S2 = 20 mM

Given that : S1 = S2 =  hence Vmax for either S1 or S2 can represent

The Vmax can be calculated using the data Given and equation below

Vo = Vmax [s] / ( Km + [s] )  ------ (1)

Vo = 0.5

[s] = 0.1 mM

km = 20 mM

making Vmax subject of  equation 1

Vmax = 0.5 ( 20.1 mM) / (0.1 mM )

         = 100.5 ≈ 101

3 0
3 years ago
Aldehydes and ketones react reversibly with two equivalents of alcohol in the presence of an acid catalyst to give acetals. Alco
kozerog [31]

Answer:

Aldehyde and ketone both react with alcohols (2 equivalent) in the presence of acid catalyst to give acetals.

Explanation:

Alcohols are poor nucleophiles and so protonation of the carbonyl oxygen used to make the carbonyl carbon a stronger electrophile. Addition of the first equivalent of alcohols gives a hemiacetal,

Addition of the second equivalent of alcohol is accompanied by loss of one molecule water to yield the produce acetal.

6 0
3 years ago
Describe a procedure to separate a mixture of salt, sand, and water.
Gelneren [198K]
You could use a heat lamp to evaporate the water.
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