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3 years ago

PLEASE HELP ME I WILL LOVE UUUU

Chemistry

1 answer:

riadik2000 [5.3K]3 years ago

5 0

Answer:

Released I think

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If a small amount of br2 is added to an aqueous solution of an unknown monosaccharide, the reddish-brown color of br2 will disap

Natalija [7]

Answer:
If a small amount of br2 is added to an aqueous solution of an unknown monosaccharide, the reddish-brown color of br2 will disappear if the monosaccharide is an Aldose.

Explanation:
This happens because the Aldose contains a carbonyl group called Alsedyde. Bromine being a oxidizing agent oxidizes the aldehyde functional group to Carboxylic Acid moiety. While this test is not positive in case of Ketonic Functional group.

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3 years ago

Which of the following values is equal to 1 micrometer?

Crazy boy [7]

1 micrometer is equal to 10⁻⁶m so the correct answer is A.) 0.000001 meter

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3 years ago

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John (travel) to Russia next week correct the tense

kondor19780726 [428]

Answer:

Explanation:

John will travel to Russia next week

hope it helps

have a nice day

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3 years ago

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The gas-phase reaction of NO with F2 to form NOF and F has an activation energy of Ea = 6.30 kJ/mol and a frequency factor of A

NISA [10]

Answer:

2.74 × 10⁸ M⁻¹.s⁻¹ = 2.74 × 10⁸ L.mol⁻¹.s⁻¹

Explanation:

Let's consider the following second-order reaction.

NO(g) + F₂(g) → NOF(g) + F(g)

We can find the rate constant (k) using the Arrhenius equation.

$k=A \times e^{-Ea/R\times T}$

where,

A: frequency factor

Ea: activation energy

R: ideal gas constant

T: absolute temperature (695°C + 273.15 = 968 K)

$k=6.00 \times 10^{8} M^{-1}.s^{-1} \times e^{-6.30\times 10^{3}J /(8.314 J/mol.K)\times 968 K} = 2.74 \times 10^{8} M^{-1}.s^{-1}$

8 0

3 years ago

Question 11(Multiple Choice Worth 1 points)

Lubov Fominskaja [6]

They have different charges and different masses.

Explanation:

Atom Protons Electrons Neutrons

a 6 6 6

R 7 8 7

The two atoms have different masses and different charges.

The mass of an atom is the sum of its number of protons and neutrons.

The charge is the difference between protons an electrons in the atom.

For atom a;

Mass = 6 + 6 = 12

charge = 6 - 6 = 0

For R:

mass = 7+ 7 = 14

charge = 7 - 8 = -1

We see that they have different masses and different charges.

learn more:

Number of subatomic particles brainly.com/question/2757829

#learnwithBrainly

7 0

3 years ago