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4 years ago

Which of the following statement best describes wavelength?

Chemistry

2 answers:

vazorg [7]4 years ago

6 0

I believe it is (C)

Alex73 [517]4 years ago

4 0

Answer:

The answer is C

Explanation:

I learned this in Physical Science and I remember the teacher saying that!!!!

You might be interested in

Describe how the energy in ocean waves could be transformed into electrical energy.

Katyanochek1 [597]

Answer:

ocean waves are converted to electricity with wave energy converter, or WEC, devices. ... The surface portion moves faster than the submerged part, and the WEC converts that relative motion into electricity

4 0

3 years ago

1. A student determines the density of water to be 0.966g/ml at a

lions [1.4K]

Answer:

The percentage error in the measurement is 2.4% 

Explanation:

The measurement made by the student is $0.966 g/cm^3$ .

But the actual value of density is $0.943 g/cm^3$

The formula to calculate percentage error is

percentage error = $\frac{(measured \ value-actual \ value)}{(actual \ value)} \times 100$

Hence percentage error in this case is given by

Percentage error = $\frac{(0.966-0.943)}{0.943} \times 100$

= $\frac{0.023}{0.943} \times 100=2.4%$

A physical quantities value will be determines by various quantities. If errors are made in measuring any of these quantities there will be error in the measurement of the final physical quantity as well.

Here density of a substance is a derived quantity determined by measuring mass and volume of that substance. If errors are made in mass and volume measurements the density value will also be erroneous.

4 0

3 years ago

a student determined in the laboratory that the percent by mass of water in cus04 5h20 is 38.0% if the accepted value is 40% wha

IrinaVladis [17]

Percent error is [(abs(experimental - actual))/(actual)] * 100
(38.0 - 40.0 ) / 40.0 = 2.0 / 40 = 0.05
0.05 * 100 = 5
since there are 2 sigfigs, the answer is 5.0 %

I made the 2 positive since the absolute value of 38.0 - 40.0 was taken
There are only 2 sigfigs because of the subtraction of 38.0 - 40.0 gives 2.0, only 2 sigfigs

4 0

4 years ago

At the end of the Paleozoic Era, ____ covered the Earth. This allowed reptiles to flourish and spread across Earth.

Dafna11 [192]

Answer:

1. grasslands

Explanation: hope this helps :)

8 0

3 years ago

A gas occupies 525 mL at a pressure of 45.0 kPa. What would the volume of the gas be at a pressure of 65.0 kPa

choli [55]

Answer:

The volume of the gas at a pressure of 65.0 kPa would be 363 mL

Explanation:

Boyle's Law is a gas law that relates the pressure and volume of a certain amount of gas, without temperature variation, that is, at constant temperature.

Boyle's law states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant. In other words, the product P · V remains constant at the same temperature:

P*V=k

Being P1 and V1 the pressure and volume in state 1 and P2 and V2 the pressure and volume in state 2 are fulfilled:

P1*V1=P2*V2

In this case:

P1= 45 kPa= 45,000 Pa (being 1 kPa=1,000 Pa)
V1= 525 mL= 0.525 L (being 1 L=1,000 mL)
P2= 65 kPa= 65,000 Pa
V2= ?

Replacing:

45,000 Pa* 0.525 L= 65,000 Pa*V2

Solving:

$V2=\frac{45,000 Pa* 0.525 L}{65,000 Pa}$

V2=0.363 L=363 mL

The volume of the gas at a pressure of 65.0 kPa would be 363 mL

6 0

3 years ago