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ruslelena [56]
3 years ago
13

Use the IUPAC nomenclature rules to give the name for this compound - SiO2

Physics
2 answers:
Anastaziya [24]3 years ago
8 0
The compound in IUPAC nomenclature is called Silicon dioxide. It <span> is a chemical compound that is an oxide of silicon with the chemical formula SiO₂. It has been known since ancient times. Hope this answers the question. Have a nice day.</span>
lana [24]3 years ago
3 0

Answer: Name of the given compound SiO_2 is silicon dioxide.

Explanation:

  • Write the name of the cation first. Just write the name of an element which is present as a cation.
  • Then write the name the anion. The name of the anion is written as name of the element followed by suffix 'ide' in the end.
  • If more than one number of anion is present in the compound then use prefixes as 'mono' for 1 , 'di' for 2 , 'tri' for 3 and so on.

SiO_2  have silicon as cation and two oxygen atom as as anion .So, the name of the of the given compound SiO_2 is silicon dioxide.

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A submarine is stranded on the bottom of the ocean with its hatch 21.0 m below the surface. calculate the force (in n) needed to
Tanzania [10]

Answer:

28,400 N

Explanation:

Let's start by calculating the pressure that acts on the upper surface of the hatch. It is given by the sum of the atmospheric pressure and the pressure due to the columb of water, which is given by Stevin's law:

p_{top} = p_{atm} + \rho g h=1.013\cdot 10^5 Pa + (1000 kg/m^3)(9.8 m/s^2)(21.0 m)=3.071 \cdot 10^5 Pa

On the lower part of the hatch, there is a pressure equal to

p_{bot}=p_{atm}=1.013\cdot 10^5 Pa

So, the net pressure acting on the hatch is

p=p_{top}-p_{bot}=3.071 \cdot 10^5 Pa - 1.013\cdot 10^5 Pa=2.058 \cdot 10^5 Pa

which acts from above.

The area of the hatch is given by:

A=\pi r^2 = \pi (\frac{0.420 m}{2})^2=0.138 m^2

So, the force needed to open the hatch from the inside is equal to the pressure multiplied by the area of the hatch:

F=pA=(2.058\cdot 10^5 Pa)(0.138 m^2)=28,400 N

8 0
3 years ago
What momentum of a 50kilogram ice skater gliding across the ice at a speed of 5m/s?
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Answer:

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