Hey there !
Molar mass KOH = <span>56.1056 g/mol
1) Number of moles :
n = m / mm
n = 25.4 / </span><span>56.1056
n =0.452 moles
Volume in liters :
985 mL / 1000 => 0.985 L
Therefore:
M = n / V
M = </span>0.452 / 0.985
=> 0.458 M
Answer:
for the given reaction is -2486.3 kJ
Explanation:
The given equation can be written as a combination of the following equation:
;
;
;
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-Pure magnesium is commonly made by separating it from seawater. This process is known as electrolysis. The liquid magnesium formed is cooled into convenient blocks of metal known as ingots. The chlorine gas is recycled to form hydrochloric acid for the production of more magnesium chloride.
Answer:
x = 2.37
Explanation:
ln x = 0.863
apply e to both sides of the equation:
e^(ln x) = e^0.863
e^(ln x) = x = e^0.863
{Demonstration of e^(ln x) = x:
y = e^(ln x)
apply ln to both sides of the equation:
ln y = ln (e^(ln x))
apply logarithmic property (ln xⁿ = n ln x)
ln y = ln x * ln e (ln e = 1)
ln y = ln x
Then:
y = x
Because y = e^(ln x) and x = y, then:
x = e^(ln x)
End of the demonstration }
Returning to our equation:
e^(ln x) = e^0.863
Then,
x = e^0.863 = 2.37
<h2>
Question</h2>
I think the actual question should say "What is true of most body cells except skin cells?" I found this on another source.
Answer:
B
Explanation:
A is false for all cell types. In every cell, genes are organised into chromosomes in the same way. However, the way they are expressed is different between different cells.
C - is false for all cell types - all cells contain the same chromosomes with the same genes.
D - is false. All cells contain the same chromosomes and genes, it is the expression patterns of the genes that direct cell identity.
B is true, each body cell contains the same genes and chromosomes. The only exception is the sex chromosomes, which are haploid and genetically unique. This means that when fertilisation occurs following sexual reproduction, the diploid state is restored and a genetically unique organism is created.