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velikii [3]
3 years ago
15

Please help asap! Giving brainliest to correct answer.

Chemistry
1 answer:
Leya [2.2K]3 years ago
6 0

Answer:

C. It may act as an insulator or a conductor.

Explanation:

Group B are the metalloids, so they have properties of both metals and nonmetals.

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Explain what happens during soil depletion and also how we can help prevent this naturally without chemicals?
Aleks04 [339]

Answer:  create more healthy products for the soil and animals

Explanation:

6 0
3 years ago
Iron fillings are added to water,and sink to the bottom. Is this a mixture or a solution ?
alexandr402 [8]
Mixture. Mixtures separate, solutions do not.
7 0
3 years ago
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During dialysis, water and urea pass from the blood into the dialysis fluid. Proteins stay in the blood.
Travka [436]

Answer:

Healthy kidneys clean your blood and remove extra fluid in the form of urine. They also make substances that keep your body healthy. Dialysis replaces some of these functions when your kidneys no longer work. There are two different types of dialysis - hemodialysis and peritoneal dialysis. The following is about hemodialysis.

5 0
3 years ago
What is the ph of a 4.8 m pyridine solution that has kb = 1.9 × 10-9? the equation for the dissociation of pyridine is?
Eddi Din [679]

Answer: 9.98


Explanation:


1) The equation for the dissociation of pyridine is:


C₅H₅N₅(aq )+ H₂O(l) ⇄ C₅H₅NH⁺(aq) + OH⁻(aq)


2) Kb equation:


Kb = [C₅H₅NH⁺(aq)] [OH⁻(aq)] / [C₅H₅N₅(aq )]


Where:


[C₅H₅NH⁺(aq)] = [OH⁻(aq)] ← from the equilibrium reaction


[C₅H₅N₅(aq )] = 4.8 M ← from the statement


⇒ 1.9 × 10 ⁻⁹ = x² / 4.8 ⇒ x² = 9.12 × 10⁻⁹


⇒ x = 9.55 × 10⁻⁵ = [OH⁻(aq)]


3) pOH


pOH = - log [OH⁻(aq)] = 4.02


4) pOH + pH = 14


⇒ pH = 14 - 4.02 = 9.98

4 0
3 years ago
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The first four planets in our solar system are rocky. How does that relate to Newton’s law of universal gravitation?
Serhud [2]

Explanation:

According to Newton law of gravity, the strength of gravitational pull between two objects is related to their masses, directly, and inversely by the distance between them;

F = G * (M₂ – M₁) / d where;

F – the force of gravity

G – gravitational constant

M₂ – the mass of one object

M₁ – the mass of the other object

d – the distance between the two objects

The rocky planets have a higher mass than the gas planets hence will be strongly ‘feel’ the gravitational pull of the star in the solar system revolves about.  This is why rocky planets are closer to their star while gas planets are towards the outer edges.

Learn More:

For more on gravity check out;

brainly.com/question/9934704

brainly.com/question/13418722

#LearnWithBrainly

5 0
3 years ago
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