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PilotLPTM [1.2K]
3 years ago
13

How many oxygen atoms are in 1.60 g of quartz? hints?

Chemistry
2 answers:
Eva8 [605]3 years ago
7 0

Number of oxygen atoms in 1.6 g = 1.6 x 6.02 x 10^23 = 1.603 x 10^22 atoms.

Further Explanation:

Solution:

Quartz has the formula SiO2

From the periodic table:

mass of oxygen = 16 grams

mass of silicon = 28.0855 grams

Mass of one mole of quarts = 28.0855 + 2(16)

= 60.0855 grams

Formula:

number of moles = mass / molar mass

number of moles = 1.6 / 60.0855  

= 0.0266 moles

Each mole of quartz contains Avogadro's number of atoms.

So,

Number of oxygen atoms in 1.6 g = 1.6 x 6.02 x 10^23  

= 1.603 x 10^22 atoms

Quartz:

Quartz is a mineral made out of silicon and oxygen particles in a persistent structure of SiO₄ silicon–oxygen tetrahedra, with every oxygen being shared between two tetrahedra, giving a general substance equation of SiO₂. Quartz is the second most bottomless mineral in Earth's mainland covering, behind feldspar.  

quartz utilized for:  

Quartz is a significant mineral with various employments. Sand, which is made out of modest Quartz stones, is the essential element for the production of glass. Straightforward Rock Crystal has numerous electronic uses; it is utilized as oscillators in radios, watches, and weight measures, and in the investigation of optics.

Subject: chemistry

Level: High School

Keywords: solution, quartz, quartz utilized for.

Related links:  

Learn more about evolution on

brainly.com/question/7035326

brainly.com/question/6966537

Naily [24]3 years ago
4 0
Quartz has the formula SiO2
From the periodic table:
mass of oxygen = 16 grams
mass of silicon = 28.0855 grams
Mass of one mole of quarts = 28.0855 + 2(16) = 60.0855 grams

number of moles = mass / molar mass
number of moles = 1.6 / 60.0855 = 0.0266 moles

Each mole of quartz contains Avogadro's number of atoms.
Therefore:
number of atoms in 1.6 g = 1.6 x 6.02 x 10^23 = 1.603 x 10^22 atoms
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Ilya [14]

From: Yy Ss Hh 8 different gametes can be formed

  • 5 Eye Color Genes = 243 genotypes
  • 10 Eye Color Genes= 59049 genotypes
  • 20 Eye Color Genes= 3,486,784,401 genotypes

This is further explained below.

<h3>What is a gamete?</h3>

Generally, Gametes are the cells of an organism that are responsible for reproduction. In certain contexts, they are also referred to as egg cells and sperm cells.

The popular word for female gametes is ova, whereas the common name for male gametes is sperm. Ovum and egg cells are other frequent names for female gametes.

Gametes are instances of haploid cells since they only contain a single copy of each chromosome. Haploid cells are described as having only one copy of each chromosome.

In conclusion, For 5 Eye Color Genes

3^n is implored hence

3^5=243 genotypes

Repeating said pattern e have

  • 10 Eye Color Genes= 59049 genotypes
  • 20 Eye Color Genes= 3,486,784,401 genotypes

Read more about gamete

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CQ

4. Consider the following genotype: Yy Ss Hh. We have now added the gene for height: Tall (H) or Short (h).

a. How many different gamete combinations can be produced?

b. Many traits (phenotypes), like eye color, are controlled by multiple genes. If eye color were controlled by the number of genes indicated below, how many possible genotype combinations would there be in the following scenarios?

a. 5 Eye Color Genes:

b. 10 Eye Color Genes:

c. 20 Eye Color Genes:

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1 year ago
One method used commercially to peel potatoes is to soak them in a solution of NaOH for a short time and then remove them from t
sergij07 [2.7K]

Answer:

b. 2.28 M

Explanation:

The reaction of neutralization of NaOH with H2SO4 is:

2NaOH + H2SO4 → Na2SO4 + 2H2O

<em>Where 2 moles of NaOH react per mole of H2SO4</em>

<em />

To solve the concentration of NaOH we need to find the moles of H2SO4. Using the chemical equation we can find the moles of NaOH that react and with the volume the molar concentration as follows:

<em>Moles H2SO4:</em>

45.7mL = 0.0457L * (0.500mol/L) = 0.02285 moles H2SO4

<em>Moles NaOH:</em>

0.02285 moles H2SO4 * (2moles NaOH / 1 mol H2SO4) = 0.0457moles NaOH

<em>Molarity NaOH:</em>

0.0457moles NaOH / 0.020L =

2.28M

Right option:

<h3>b. 2.28 M</h3>
7 0
2 years ago
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Karolina [17]

Answer:

As water freezes, a crystalline structure preserved by hydrogen bonding is formed by water molecules. Less dense than liquid water is solid water, or ice. Ice is less dense than water since molecules are pulled farther apart by the direction of hydrogen bonds, which decreases density.

Explanation:

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I think the answer is D

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