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Alika [10]
3 years ago
10

Can I please have help ASAP!!!! Will give 60 points to the correct answer and I will also mark Brainlest! If it's not to much to

ask, also a explanation! :) Thanks in advance! :)
Which equation is balanced?
2Na + Cl2→NaCl

Na + Cl2→NaCl

2Na + Cl2→2NaCl

Na + 2Cl2→2NaCl
Chemistry
1 answer:
Stels [109]3 years ago
7 0
2Na+Cl2 -> 2NaCl is balanced
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An ideal gas is allowed to expand from 5.40 L to 35.1 L at constant temperature. By what factor does the volume increase?
horrorfan [7]

Answer:

a) 6.5

b) pressure decreases

c)22 atm

Explanation:

Since the initial volume V1 is 5.40 L and the final volume V2 is 35.1 L, the ratio of V2:V1= 35.1/5.40= 6.5 hence the volume increases by a factor of 6.5.

When the volume increases, the pressure decreases accordingly in accordance with Boyle's law. Boyle's law states that the volume of a given mass of gas is inversely proportional to its pressure at constant temperature.

c) From Boyle's law

Initial volume V1= 5.40 L

Final volume V2= 35.1 L

Initial pressure P1= 143 ATM

Final pressure P2 = the unknown

P1V1= P2V2

P2= P1V1/V2

P2 = 143 × 5.40/ 35.1

P2= 22 atm

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3 years ago
PLEASE HELP<br> Why can you not create a Punnett square to determine the height of an individual?
kifflom [539]

Answer:

Punnett squares do not provide accurate predictions on the distribution of phenotypes in offspring. ... This makes it difficult to make predictions regarding Down's syndrome since it cannot predict the prevalence of the offspring's genotypes about a population.

Explanation:

Limitations of Punnett squares as models of inheritance include the lack of information about likely variation in small samples such as individual families and the lack of information about population prevalence of parental genotypes (so no predictions can be made about population prevalence of offspring genotypes.

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3 years ago
How many moles of NaOH are contained in 27 mL of 0.15 M NaOH? (Atomic mass: Na=23 u , O =16 u , H =1 u) *
Strike441 [17]
5 plus pointed it should give you 60.21
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D

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Please help me with this question/
klasskru [66]
Ur answer is A

hshsbdndnensj
8 0
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