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3 years ago

What makes a compound a strong acid or base

1 answer:

3 0

If the acid is 100 percent dissociated in solutions of 1.0 M or less, it is called strong. Sulfuric acid is considered strong only in its first dissociation step; 100 percent dissociation isn't true as solutions become more concentrated.

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During photosynthesis, light energy from the Sun causes a reaction to take place. The products of photosynthesis are used in a r

andrew11 [14]

Answer:

chemical reactions which proceed with the release of heat energy are called exothermic reactions

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2 years ago

The melting of metamorphic or igneous rock forms what substance? How? Why?

Ugo [173]

Answer:

Extreme pressure from burial, increasing temperature at depth, and a lot of time, can alter any rock type to form a metamorphic rock. If the newly formed metamorphic rock continues to heat, it can eventually melt and become molten (magma). When the molten rock cools it forms an igneous rock.

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3 years ago

PLEASE HELP ME WHATS THE ANSWER

Allushta [10]

I’m pretty sure the answer is true
Have a nice day! :D

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2 years ago

Somethings wrong with Tommy’s left eye. You have to examine it very carefully. Can you bring the parts of the eye in the correct

Lubov Fominskaja [6]

Answer:

cornea - Iris - lens - retina.( From outside to inside)

Explanation:

The correct order from outside to inside is cornea - Iris - lens - retina.

The cornea is the front part of the eye. It helps the eye to focus on light. It is transparent.

The Iris is located at the back of the cornea.The quantity of light that falls on the eye is determined by the Iris. The Iris is colored.

Lens allows light to be focused on the retina. It is behind the Iris.

The retina is the part of the eye that senses light. The retina sends the light signal it senses to the brain for interpretation. It is the innermost if all the options given.

3 0

3 years ago

A weather balloon is inflated to a volume of 27.3 L at a pressure of 738 mmHg and a temperature of 26.9 ∘C. The balloon rises in

sertanlavr [38]

Answer:

The new volume of the balloon is 46.1 L

Explanation:

Step 1: Data given

Initial volume of the balloon = 27.3 L

Initial pressure in the balloon = 738 mmHg = 0.97105 atm

Initial temperature in the balloon = 26.9 °C = 300.05 K

The pressure decreases to 375 mmHg = 0.493421 atm

The temperature lowers to -15.6 °C = 257.55 K

Step 2: Calculate the volume

P1*V1 / T1 = P2 *V2 / T2

⇒with P1 = the Initial pressure = 738 mmHg = 0.97105 atm

⇒with V1 = Initial volume of the balloon = 27.3 L

⇒with T1 = Initial temperature in the balloon = 26.9 °C = 300.05 K

⇒with P2 = the decreased pressure = 0.493421 atm

⇒with V2 = the new volume = TO BE DETERMINED

⇒with T2 = the lowered temperature = 257.55 K

0.97105 * 27.3 / 300.05 = 0.493421*V2 / 257.55

V2 = 46.1 L

The new volume of the balloon is 46.1 L

6 0

3 years ago