Answer:
Just make it sound right please it don't even add up what was you even thinking like come on now...lol
Explanation:
What does this mean I don't understand your question.
Answer:
0.069moles
45.65%
Explanation:
Firstly, we need to calculate the number of moles of CO2 produced. We can use the ideal gas equation for this.
PV = nRT
n = PV/RT
according to the question,
P = 746torr
V = 1.73L
T = 26 = 26 + 273.15 = 299.15K
n = ?
R = 62.364 L. Torr/k.mol
n = (746 * 1.73)/(62.364 * 299.15) = 0.069moles
B. To get this, we can use their molar masses. The molar mass of calcium carbonate is 100g/mol while for magnesium carbonate, molar mass is 84g/mol
The percentage by mass is (84)/(84 + 100) * 6.53g = 2.98g
= 2.98/6.53 * 100 = 45.65%
Stuff about the earth and tectonic plates, and about space and stuff.
1.Nuclear charge decreases as the atomic number increases.Immersive Reader
Answer - True
2.In alkali metals, the atomic radius of potassium is greater than
Answer - Lithium
3.While moving across the periodic table from left to right there is an increase in atomic radius.
Answer - False
4.When moving from gold to lead, the atomic radius increases.
Answer - True
5.The picometer is the unit used to measure atomic radii.
Answer - True
6.Which of the following is larger in atomic size?
Answer - Boron
7.Chlorine has a larger atomic radius than fluorine.
Answer - True
8.Atomic size increases across a period.
Answer - False
9.The atomic radius of a nitrogen atom is 70 pm. What is the distance between the nuclei of two bonded nitrogen atoms in a N2 molecule
Answer - 140 pm
10.Arrange the following atoms in order of decreasing atomic radius:
Ga, As, Sn, Sb, Te
Answer - a. Sn, Sb, Te, Ga, As
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Once <u>hydrogen</u> bonds form between every fourth amino acid in a polypeptide chain, the chain begins to twist into the <u>secondary</u> structure known as a(n) <u>alpha helix</u>.
<h3>
What is Amino Acid ? </h3>
Amino acids are organic compound. Amino acids contains amine and carboxyl functional group. Amino acids is the building block of life these are the molecules that combine to form proteins.
<h3>What is Polypeptide Chain ? </h3>
A unique sequence of amino acids joined by peptide bonds is called polypeptide.
Thus from the above conclusion we can say that Once <u>hydrogen</u> bonds form between every fourth amino acid in a polypeptide chain, the chain begins to twist into the <u>secondary</u> structure known as a(n) <u>alpha helix</u>.
Learn more about the Amino acids here: brainly.com/question/2526971
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