All categories

3 years ago

BRAINLIEST FOR BEST ANSWER AND 20 POINTS!!!

Chemistry

1 answer:

n200080 [17]3 years ago

8 0

The number of electrons in an ion is different from the number of protons

You might be interested in

Tempature increases as altitude increses because you're moving closer to the sun is it true

Alex777 [14]

Nope. It is false. Temperature decreases as altitude increases.

5 0

3 years ago

Cellular respiration uses glucose and oxygen, which have high levels of free energy, and releases carbon dioxide and water, whic

Alja [10]

Answer: Cellular respiration is spontaneous and exergonic. The energy released from the glucose is stored in ATP molelcules.

Explanation:

Spontaneous reactions have an increase in entropy (level of disorder) and a decrease in enthalpy (total energy). Cellular respiration goes from a more ordered state (one molecule of glucose) to a more disordered state (several molecules of CO2), and goes from a state with a lot of free energy to one with much less free energy. As a result, respiration is a spontaneous process.

As free energy from the glucose is released as ATP molecules during oxidation, the reaction is exergonic.

4 0

3 years ago

Read 2 more answers

Place where food is stored and partially digested

Ostrovityanka [42]

Answer: Chyme

Explain: Chyme passes from the stomach to the small intestine. Further protein digestion takes place in the small intestine.

3 0

3 years ago

Aluminum is an element. Which best describes what makes up a sample of aluminum?

sp2606 [1]

I believe the answer is A.

4 0

3 years ago

Read 2 more answers

What is the volume of 40.0 grams of argon gas at STP ?

MrRa [10]

Answer:

24.9 L Ar

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Table
Moles
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Aqueous Solutions

States of Matter

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 40.0 g Ar

[Solve] L Ar

Step 2: Identify Conversions

[PT] Molar Mass of Ar - 39.95 g/mol

[STP] 22.4 L = 1 mol

Step 3: Convert

[DA] Set up: $\displaystyle 40.0 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar})(\frac{22.4 \ L \ Ar}{1 \ mol \ Ar})$
[DA] Divide/Multiply [Cancel out units]: $\displaystyle 24.9235 \ L \ Ar$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

24.9235 L Ar ≈ 24.9 L Ar

5 0

3 years ago