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Basile [38]
2 years ago
5

A NaOH (aq) stock solution was created by dissolving 3.88 g NaOH in water to create a 100.00 mL solution. What is the concentrat

ion of this solution
Chemistry
1 answer:
Ierofanga [76]2 years ago
8 0

Answer:

I have don 3 so far

Explanation:

Brainlyis the best

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Why is water said to be universal solvent?
Pachacha [2.7K]

Answer:

B

Explanation:

And, water is called the "universal solvent" because it dissolves more substances than any other liquid. This allows the water molecule to become attracted to many other different types of molecules.

8 0
2 years ago
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Which statement best describes a chemical property of a mineral
alina1380 [7]

Answer:

The mineral forms gas bubbles when a sample is stored in water

6 0
3 years ago
Please help with both
kupik [55]

Answer:

D =Average atomic mass  = 10.801 amu.

5) True

Explanation:

Abundance of B¹⁰= 19.9%

Abundance of B¹¹ = 80.1%

Atomic mass of B¹⁰ = 10 amu

Atomic mass of B¹¹ = 11 amu

Average atomic mass = ?

Solution:

Average atomic mass  = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass  = (10×19.9)+(11×80.1) /100

Average atomic mass =  199 + 881.1 / 100

Average atomic mass  = 1080.1 / 100

Average atomic mass  = 10.801 amu.

2)A chemical reaction is one in which a new elements is created

True

False

Answer:

In chemical reaction new substances are created.

For example:

Photosynthesis:

It is the process in which in the presence of sun light and chlorophyll by using carbon dioxide and water plants produce the oxygen and glucose.

Carbon dioxide + water + energy →   glucose + oxygen

water is supplied through the roots, carbon dioxide collected through stomata and sun light is capture  by chloroplast.

Chemical equation:

6H₂O + 6CO₂ + energy  →   C₆H₁₂O₆ + 6O₂

it is known from balanced chemical equation that 6 moles of carbon dioxide react with the six moles of water and created one mole of glucose and six mole of oxygen.

8 0
3 years ago
I just need help with question 10.??? Please ASAP
Alex

Answer:

4 hydrogen / 1 Carbon

Just look at the diagram

4 0
2 years ago
7. For the following reaction, which of the following is a conjugate acid-base pair?
spayn [35]

Answer:

HPO42- (aq) + NH4+ (aq)

Explanation:

This is a conjugate acid-base pair. Please forgive if my answers are incorrect. I myself am quite unsure.

8 0
2 years ago
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