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Andreas93 [3]
3 years ago
8

PLS HELP I REALLY NEED THIS

Biology
1 answer:
Nina [5.8K]3 years ago
3 0
Don’t click answers that have links
You might be interested in
A student is collecting the gas produced
marissa [1.9K]

Answer:

0.062 moles of hydrogen gas

Explanation:

We must first out down the reaction equation before we can attempt to solve the problem.

Mg(s) + 2HCl(aq) ----> MgCl2(aq) + H2(g)

Next we obtain the number of moles in 1.5 g of magnesium metal from;

Molar mass of magnesium = 24.3 gmol-1

Number of moles of magnesium= mass/molar mass = 1.5g/24.3gmol-1 = 0.062 moles

From the reaction equation;

1 mole of magnesium metal yields 1 mole of hydrogen gas

0.062 moles of magnesium metal will yield 0.062 moles of hydrogen gas

Therefore, reaction of 1.5g of magnesium metal with excess hydrochloric acid will yield 0.062 moles of hydrogen gas.

7 0
3 years ago
Adenosine triphosphate (ATP) molecules are used for the synthesis of a large number of biomolecules. Which two actions happen wh
AnnyKZ [126]
The correct answers are:
A-Chemical energy is released.
D-Thermal energy is released.    
<span>The hydrolysis of ATP to ADP releases heat which means that the thermal energy is released. But, ATP has a high level of chemical potential which can be used in many cellular processes. The chemical potential of one molecule can be used to raise the chemical potential of the other and release some heat as a byproduct (for example, the phosphorylation of glucose to become glucose-6-phosphate).</span>
3 0
3 years ago
Read 2 more answers
Bladder contractions are controlled by the _____ nervous system.
igor_vitrenko [27]

Bladder is an internal organ, which is mainly made up of smooth muscles. The contractions of the smooth muscles are not under voluntary control. The contraction of these muscles are directed by brain, without any external control.

The autonomic nervous system is a part of nervous system, which is responsible for regulation of the all the conditions, which occur involuntarily. It directs the movements of all smooth muscles.

Hence, the movements of the bladder are controlled by the autonomic nervous system.

8 0
4 years ago
Which genetic locus is not used for calculating the rarity of a DNA profile?
nalin [4]

Answer:

TOPX

Explanation:

3 0
3 years ago
HELP PLZ GOD BLESS YOU AND YOUR GRADES
iren [92.7K]

Answer:

The third and second is the  correct!

Explanation:

For example, cooling water will cause it to become ice.

As for the second one, if you heat up liquid, the particles move faster, causing the liquid to evaporate and become a gas

Hope i helped! :3

had a brain fart, sorry, i fixed it

8 0
3 years ago
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