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3 years ago

14

Define prism and itz colo

1 answer:

Aleks [24]3 years ago

8 0

Answer:

prism was just a pyramid and if you strike it with white light, the white light then breaks down into 7 colors. (red,orange,yellow,green,blue,indigo,violet)

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nika2105 [10]

Answer:

The representation of a chemical reaction in the form of substances is known as a chemical equation. The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation.

The Law of conservation of mass governs the balancing of a chemical equation.

According to this law, mass can neither be created nor be destroyed in a chemical reaction and obeying this law total mass of the elements or molecules present on the reactant side should be equal to the total mass of elements or molecules present on the produc

4 0

2 years ago

Consider the following thermochemical equation:

Arisa [49]

Answer:

$m_w=5.3248\times 10^{23}\ kg$

Explanation:

According to the given reaction,

heat released by thecombustion of 2 molecules of Methanol, $\Delta H=1277000\ J$

we know that molecular mass of Methanol, $m=32\ g.mol^{-1}$

∴12 gram of methanol = $\frac{3}{8}\ moles$

we know 1 mole = $6.023\times 10^{23}\ molecules$

so,

$\rm \frac{3}{8} \ moles=2.258\times 10^{23}\ molecules$

Heat from the combustion of $2.258\times 10^{23}\ molecules$ :

$Q=1277000\times \frac{2.258\times 10^{23}}{2}$

$Q=1442132.0625\times 10^{23}\ J$

<u>Now the mass of water that can be heated from 23.5°C to 88.2°C :</u>

$Q=m_w.c_w.\Delta T$

$1442132.0625\times 10^{23}=m_w.4186\times (88.2-23.5)$

$m_w=5.3248\times 10^{23}\ kg$

8 0

3 years ago

Two sailboats leave a harbor in the bahamas at the same time. the first sails at 23 mph in a direction 330°. the second sails at

pishuonlain [190]

First, let us calculate the total distance that each have taken after 2 hours.

Let’s say that:

A = sailboat which sails at 23 mph in a direction 330°

B = sailboat which sails at 34 mph in a direction 190°

Calculating for distances:

dA = 23 mph (2 hours) = 46 miles

dB = 34 mph (2 hours) = 68 miles

Imagining a Cartesian coordinate, the angle θ between the two sailboats is simply the difference:

θ = 330° - 190°

θ = 140°

We know that from the law of cosines:

c^2 = a^2 + b^2 – 2 a*b*cos θ

Therefore the distance between the two after 2 hours, C, is:

C^2 = 46^2 + 68^2 – 2 (46) (68) cos(140)

<span>C = 107.39 miles</span>

7 0

4 years ago

Which statement describes what happens when Bret runs up a flight of stairs?

ivolga24 [154]

His kinetic energy is converted to potential energy.

4 0

4 years ago

Read 2 more answers

What is a galvanic cell??

Kobotan [32]

Its an electrochemical cell that derives electrical energy from spontaneous redox reactions taking place within the cell.

8 0

3 years ago