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Svet_ta [14]
3 years ago
8

I NEED EXPLANATIONSS!!!! Help , i have to past or my teacher will fail me .. again !!

Chemistry
1 answer:
dem82 [27]3 years ago
7 0

Answer:

Put simply, Asexual reproduction is reproduction without the use of gametes or the number of chromosomes being changed. So they are genetically identical creatures. Some animals include wasps,  lizards, sharks, turkeys, and sea urchins.

Sexual reproduction includes chromosomes and gametes being fused, creating genetically different offspring. Examples of creatures that reproduce sexually are humans, chickens, cow, pigs, etc.

Explanation:

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Why do electrons flow through a wire?
I am Lyosha [343]

Answer:

When electrons flow through a conductor such as a wire, it is called, "Electricity".

Explanation:

4 0
3 years ago
What is the mole to mole ratio of LiOH to HBr for the following reaction?
umka21 [38]

Explanation:

so moles = mass ÷ mr (1+ 79.9)

so 10.00g ÷ 80.9

which is 0.1236093943

so to 3 S.F is 0.124 moles

also there is 1 to 1 ratio for LiOH to HBr

hope this helps :)

8 0
3 years ago
When a student chemist transferred the metal to the calorimeter, some water splashed out of the calorimeter. will this technique
Natalka [10]

Answer:

It will be reported too low.

Explanation:

To measure the specific heat of the metal (s), the calorimeter may be used. In it, the metal will exchange heat with the water, and they will reach thermal equilibrium. Because it can be considered an isolated system (there're aren't dissipations) the total amount of heat (lost by metal + gained by water) must be 0.

Qmetal + Qwater = 0

Qmetal = -Qwater

The heat is the mass multiplied by the specific heat multiplied by the temperature change. If c is the specific heat of the water:

m_metal*s*ΔT_metal = - m_water *c*ΔT_water

s = -m_water *c*ΔT_water / m_metal*ΔT_metal

So, if m_water is now less than it was supposed to be, s will be reported too low, because they are directly proportional.

5 0
3 years ago
How many milliliters of 0.128 M nitric acid are required to neutralize 11.1 mL of 0.184 M sodium hydroxide? Answer with the corr
Llana [10]

Answer:

I think 7.72 mL

11.1/184 × 128/184=7.72

4 0
2 years ago
The effectiveness of a chemical sanitizer can be limited by
Serjik [45]

Chemical sanitizer effectiveness, decreases with increase in pH . And most soap and detergent are alkaline in nature, that limits its effectiveness. So they should be rinsed off completely for proper effectiveness of santizer. So improper rinsing limits the effectiveness of a sanitizer.

So , the answer is improper rinsing after that still a detergent residue remains limits the effectiveness of sanitizer.

7 0
3 years ago
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