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3 years ago

ANSWER ASAP GIVING BRAINLIEST FIVE STARS AND A HEART!!!

Chemistry

1 answer:

Alisiya [41]3 years ago

7 0

Answer:

An incandescent light bulb works by heating a filament in the bulb. Fluorescent light is a bright light produced by electricity flowing through a tube filled with ionized gas. Fluorescent light bulbs are more energy-efficient than incandescent bulbs.

Explanation:

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What is the equilibrium expression for the reaction below? 2Na(s) + 02) Na2O2,(s)

iogann1982 [59]

Answer:

${ \tt{k _{c} = \frac{[Na_{2} O _{2} ]}{[Na] {}^{2} [O _{2} ]} }}$

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3 years ago

Whats on the right side ?

Svetach [21]

Answer:

B) Products

Explanation:

6 0

3 years ago

Read 2 more answers

given the following list of densities, which material would float in a molten vat of lead provided that they do not themselves m

SIZIF [17.4K]

Answer:

Given the following list of densities, which materials would float in a molten vat of lead provided that they do not themselves melt?

Densities (g/mL): lead = 11.4, glass = 2.6, gold = 19.3, charcoal = 0.57, platinum = 21.4.

glass and charcoal

Explanation:

The density of molten lead is about 10.65Kg/m^3

By Archimedes principles, the buoyancy of an object in a fluid is proportional to the mass of fluid displaced

which in turn is proportional to the object's density

Generally an object well float when placed on a denser medium

glass =2.6, and charcoal =0.57 are both less dense so they will float on Lead

8 0

3 years ago

When a pure sample of KNO3(s) spontaneously dissolves in water at room temperature, the solution becomes quite cold to the touch

jekas [21]

The enthalpy of the solution is positive and the entropy is positive.

Potassium trioxonitrate (V) KNO₃(s) is a strong oxidizing solid substance that when dissolved in water changes to aqueous solution.

In its aqueous solution state, the randomness of molecules increases as a result of that the entropy will also increase leading to the positive state of the entropy.

Similarly, provided that the solution becomes quite cold to the touch, the enthalpy is also in it positive state.

Therefore, we can conclude that the enthalpy of the solution is positive and the entropy is positive.

Learn more about Potassium trioxonitrate (V) KNO₃(s) here:

brainly.com/question/25303112

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2 years ago

2. Calculate the pl of the following amino acids(use their Pka values) a. Arginine b. Glutamic acid of water an c. Asparagine d.

Savatey [412]

<h2>♨ANSWER♥</h2>

pl (25*C)

Arginine -----> 10.76

Glutamic -----> 3.08

Asparagine -----> 5.43

Tyrosine -----> 5.63

☆...hope this helps...☆

_♡_mashi_♡_

5 0

2 years ago