What are the products when anaerobic respiration occurs in yeast cells? Carbon dioxide, water, and energy

Carbon dioxide, ethanol, and energy

Lactic acid and energy

Glucose, oxygen, and energy

Answers

Answer 1

Answer: The correct answer is the second option. Anaerobic respiration is a type of respiration which involves the use of electron acceptors other than oxygen. This is respiration without using oxygen. An example is alcohol fermentation where the the reactants are glucose and enzymes forming to products which are CO2, ethanol and energy.

Answer 2

Answer: carbon dioxide, water, and ATP

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What is the correct molar mass for the compound CaBr3

Answers

CaBr₃ = 40 + 80 * 3 = 280 g/mol

hope this helps!

How many milliters of a 0.171 solution contains 1.00 g of NaCl

Answers

: Molar mass of NaCl: 35.4+22.9 = 58.3 g/mol

X milliliters (=X/1000 liters) of a 0.171M solution contain 0.171*X/1000 moles of NaCl.
0.171*X/1000 moles of NaCl = 58.3*0.171*X/1000 g = 1 g (as given)
58.3*0.171*X/1000 = 1
X = 100.3

A scientist discovers a new substance. The molecules of the substance form hydrogen bonds with each other. When the molecules lose a lot of energy, the hydrogen bonds hold them relatively far apart. Based on this information, what can the scientist infer about the substance?

Answers

Answer is: It expands when it freezes.

When molecule frezes, it lose energy. When molecules are far apart, it means the volume is greater and it expands.

For example, ice expands when water is freezing.

Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.

The more the heat energy present in it the bond between the molecules gets weaker just like water

How would you ask a girl out. I know that I can use my voice, but I don’t know what to say.

Answers

Answer:

Just go out there and be yourself brother!

Explanation:

If she doesn't like you, she doesn't like the real you, therefore you don't deserve her! lol

Which process is a chemical change?(1) melting of ice
(2) boiling of water
(3) subliming of ice
(4) decomposing of water

Answers

Answer:

Option 4 = decomposing of water

Explanation:

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible.

These changes occur due to chemical reactions.

These may not be observed with naked eye.

Example:

Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood

Boiling of egg: that change the chemical composition of protein in the egg

The reaction of Hydrogen and oxygen:

H 2 (g) + O 2 (g) -------------------------------------> 2H 2O (l)

Physical Change

The changes that occur only due to change in shape or form but their chemical or internal composition remain unchanged.

These changes were reversible.

They have same chemical property.

These changes can be observed with naked eye.

Example

Water converting to Ice.

Water converting to gas.

In this water molecule remain the same only they rearrange themselves that change its state of mater not composition.

1 = Melting of ice

The melting of ice is physical change because water molecules are just change the state from solid to liquid and composition remain same.

2 = Boiling of water

It is also a physical change because water molecules are just change the state from liquid to gas and the molecular structure of water molecules remain same.

3 = Subliming of ice

It is physical change because ice is converted into water vapors without going through liquid phase.

4 = Decomposing of water

It is a chemical change because water molecules are split into the hydrogen and oxygen. The molecular structure is changed. New product is formed which is different from the reactant.

Sodium chloride, NaCl forms in this reaction between sodium and chlorine. 2Na(s) + Cl2(g) → 2NaCl(s) How many moles of NaCl result from the complete reaction of 3.9 mol of Cl2? Assume that there is more than enough Na.