3 years ago

What material would make the best heating element for an electric range?

Chemistry

2 answers:

AnnZ [28]3 years ago

8 0

A) a resistor, which converts some electric energy to thermal energy.

OverLord2011 [107]3 years ago

6 0

A. a resistor, which converts some electric energy to thermal energy.

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Scorpion4ik [409]

There u go my friend :)

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3 years ago

3. Are quartz and coal minerals or only naturally occurring<br> substances?

klasskru [66]

Answer:

minerals

Explanation:

coal is made from decomposing matter

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4 years ago

The anion of which element has a -1 charge? Iodine Strontium Silver or Xenon

joja [24]

Iodine Strontium Silver...... ..I think.

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3 years ago

Green light has a wavelength of 550nm. What is the frequency of a photon of green light?

Vikki [24]

Answer:- Frequency is $5.4*10^1^4Hz$ .

Solution:- frequency and wavelength are inversely proportional to each other and the equation used is:

$\nu =\frac{c}{\lambda }$

where, $\nu$ is frequency, c is speed of light and $\lambda$ is the wavelength.

Speed of light is $3.0*10^8m/s$ .

We need to convert the wavelength from nm to m.

( $1nm=10^-^9m$ )

$550nm(\frac{10^-^9m}{1nm})$

= $5.5*10^-^7m$

Now, let's plug in the values in the equation to calculate the frequency:

$\nu =\frac{3.0*10^8m.s^-^1}{5.5*10^-^7m}$

= $5.4*10^1^4s^-^1$ or $5.4*10^1^4Hz$

since, $1s^-^1=1Hz$

So, the frequency of the green light photon is $5.4*10^1^4Hz$ .

4 0

3 years ago

Now molecules: ____ molecules of H2 + ____ molecules of O2 → ____molecules of H2O

Valentin [98]

Answer:

4 H2 + 1 O2 = 2 H2O

6 0

4 years ago