T
Answer:
the velocity is a second final to initial velocity of 39
42.5g
Explanation:
Given parameters:
Mass of N₂= 35g
Unknown:
Mass of NH₃ = ?
Solution:
Equation of the reaction:
N₂ + 3H₂ → 2NH₃
To solve this problem, we work from the known species to the unknown. The known here is the reacting mass of the N₂. From this we can find the number of moles of the N₂.
Number of moles of N₂ = 
molar mass of N₂ = 28g/mol
Number of moles = 
= 1.25moles
From the equation of the reaction:
1 mole of N₂ produced 2 moles of NH₃
1.25 moles of N₂ will produce 2 x 1.25 = 2.5moles of NH₃
Mass of NH₃ = Number of moles of NH₃ x molar mass of NH₃
= 2.5 x (14 + 3)
= 42.5g
Learn more:
number of moles brainly.com/question/1841136
#learnwithBrainly
Answer:
Genotype of woman - Hh
Genotype of man - Hh
Probability of their children having the disease - 1/4
Probability of their children not having the disease - 3/4
Explanation:
Let the allele for the Huntington disease be represented by H. Hence, the alternate form will be h.
A heterozygous/carrier woman will have the genotype Hh. A heterozygous/carrier man will also have the genotype Hh.
If the two marries:
Hh x Hh = HH, Hh, Hh, and hh
1 HH = homozygous normal
2 Hh = heterozygous normal (carrier)
1 hh = homozygous abnormal (diseased)
<em>Probability of their children having the disease = 1/4</em>
<em>Probability of their children not having the disease = 3/4</em>
<u>We are given:</u>
The tuning fork vibrates at 15660 oscillations per minute
<u>Period of one back-and forth movement:</u>
the given data can be rewritten as:
1 minute / 15660 oscillations
60 seconds / 15660 oscillations <em>(1 minute = 60 seconds)</em>
<em>dividing the values</em>
0.0038 seconds / Oscillation
Therefore, one back and forth vibration takes 0.0038 seconds
