All categories

2 years ago

NEED ANSWER FAST 50 POINTS

Chemistry

2 answers:

Stels [109]2 years ago

5 0

Answer:

C....................

Kitty [74]2 years ago

4 0

C!!!!! definitely fiteration

You might be interested in

The temperature at which water condenses from a gaseous to a liquid form

MatroZZZ [7]

It condenses when it passes below 212 degrees Celsius, or 100 degrees Fahrenheit

8 0

2 years ago

What appears to happen to the moon as it goes through the cycle ?

7nadin3 [17]

Answer:

The moon appears to change forms

Explanation:

As it rotates around Earth, sunlight only hits half of the moon which creates that impression

4 0

2 years ago

What volume in mL of 0.220 M HBr solution is required to produce 0.0130 moles of HBr?

yulyashka [42]

Answer: A volume of 59 mL of 0.220 M HBr solution is required to produce 0.0130 moles of HBr.

Explanation:

Given: Moles = 0.0130 mol

Molarity = 0.220 M

Molarity is the number of moles of solute present in liter of a solution.

$Molarity = \frac{moles}{volume (in L)}$

Substitute the values into above formula as follows.

$Molarity = \frac{moles}{volume (in L)}\\0.220 M = \frac{0.0130 mol}{Volume (in L)}\\Volume (in L) = 0.059 L$

As 1 L = 1000 mL

So, 0.059 L = 59 mL

Thus, we can conclude that a volume of 59 mL of 0.220 M HBr solution is required to produce 0.0130 moles of HBr.

8 0

2 years ago

A helium laser emits light with a wavelength of 633 nm. What is the frequency, v, of the light?

Elanso [62]

Answer:

4.74×10¹⁴ Hz.

Explanation:

From the question given above, the following data were obtained:

Wavelength of light = 633 nm.

Frequency of light =?

Next, we shall convert 633 nm to metre (m)

This can be obtained as follow:

1×10⁹ nm = 1 m

Therefore,

633 nm = 633 nm × 1 m / 1×10⁹ nm

633 nm = 6.33×10¯⁷ m

Thus, 633 nm is equivalent to 6.33×10¯⁷ m

Finally, we shall determine the frequency of the light as follow:

Wavelength of light = 6.33×10¯⁷ m

Velocity of light = 3×10⁸ m/s

Frequency of light =?

Velocity = wavelength x frequency

3×10⁸ = 6.33×10¯⁷ x frequency

Divide both side by 6.33×10¯⁷

Frequency = 3×10⁸ / 6.33×10¯⁷

Frequency = 4.74×10¹⁴ Hz.

Therefore, the frequency of the light is 4.74×10¹⁴ Hz.

8 0

2 years ago

What is the relationship between the surface of an object and the amount of friction it produces?

bearhunter [10]

Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.

5 0

2 years ago