Answer:
Molarity = 0.08 M
Explanation:
Given data:
Volume of NaOH = 24.11 cm³ (24.11/1000 = 0.0241 L)
Mass of C₈H₅KO₄ = 0.43 g
Molarity of NaOH = ?
Solution:
First of all we will write the chemical equation:
C₈H₅KO₄ + NaOH → H₂O + KNaC₈H₄O₄
Number of moles of C₈H₅KO₄:
Number of moles = mass/ molar mass
Number of moles = 0.43 g / 204.22 g/mol
Number of moles = 0.002 mol
Now we will compare the moles of C₈H₅KO₄ with NaOH.
C₈H₅KO₄ ; NaOH
1 : 1
0.002 : 0.002
Molarity of NaOH:
Molarity = number of moles / volume in litter
Molarity = 0.002 mol /0.0241 L
Molarity = 0.08 M
The short pea plant will be recessive while the tall pea plant will be the dominant.
When a dominant and a recessive allele are combined, the dominant allele covers up the recessive allele. Making it so that the recessive allele usually not show up.
Answer:
what? that's 66 total, 6 more elliptical machines, a 1 to 1.2 ratio
but I don't know what else you would mean
Answer:
BF 3
Explanation:
The geometry of the BF 3 molecule is called trigonal planar The fluorine atoms are positioned at the vertices of an equilateral triangle. The F-B-F angle is 120° and all four atoms lie in the same plane.
<span><span>Convert the percentages into decimals (you can do that by dividing the percent by 100), then multiply that by its
corresponding mass to find its relative amount/ contribution to the
atomic mass of chromium. After doing so, add all of the obtained values
together to get the average mass.
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83.79% = .08379
9.50% = .095
4.35% = .0435
2.36% = .0236
Average mass of chromium = 0.8379(51.94) + 0.095( 52.94) + 0.0435(49.95) + 0.0236(53.94)
Answer: 52amu
P.S. never forget units
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