3 years ago

Someone please help me??

1 answer:

5 0

Adding substance to a liquid disturbs the lattice in which the liquid settles into to become a solid. To overcome this disturbance, a lower temperature is required. The answer is A, where the prevalence of NaCl is higher than all the others. This means that this compound is present more frequently to affect the lattice more than the others, requiring a much lower freezing temperature.

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When ethane (

LuckyWell [14K]

Answer:

9 Moles

Explanation:

C2H6 has 6 Hydrogens and Water Has 2 Hydrogens

so it takes 1 mole ethane to produce 3 moles water

1 Mole Ethane ----> 3 Moles Water so 3 ----> 9 moles

7 0

4 years ago

Which bases can deprotonate acetylene? the pka values of the conjugate acids are given in parentheses. select all that apply. ch

Usimov [2.4K]

pKa is a value which is related to the acid dissociation constant Ka

pKa = -log Ka

i.e. Ka = 10^-pKa

The deprotonation reaction of acetylene is:

HC≡CH ↔ HC≡C⁻ + H⁺

pKa (HC≡CH) = 25

Solvents with pKa greater than 25 will deprotonate acetylene.

Ans: CH2=CH⁻ pka = 44 and CH3NH⁻ pka = 40

4 0

4 years ago

If the theoretical yield of the reaction below corresponds to 25.3 g and the percent yield of the reaction is known to be reprod

maksim [4K]

Answer:

Actual yield = 20.52 g

Explanation:

Given data:

Theoretical yield = 25.3 g

Percentage yield = 81.1 %

Actual yield = ?

Solution:

Formula:

Percentage yield = Actual yield /theoretical yield × 100

81.1 % /100 = Actual yield / 25.3 g

0.811 = Actual yield / 25.3 g

Actual yield = 0.811 × 25.3 g

Actual yield = 20.52 g

3 0

3 years ago

1. Diet and stress are mostly examples of which type of factors?

ella [17]

Here are the answers:
1) C
2) A

8 0

3 years ago

Read 2 more answers

Element used in bright flashlights

Mazyrski [523]

The element would be Neon. They are found in signs

8 0

4 years ago