Ask question

Ask question

All categories

3 years ago

5

Why does light from the infrared lamp warm the mirror when light from the desk lamp does not?

1 answer:

Sunny_sXe [5.5K]3 years ago

7 0

Answer:

Because the infrared lamp gives off a type of light that the desk lamp does not, and the mirror can only take in the energy from the infrared light.

Explanation:

You might be interested in

frutty [35]

In order for carbon to be stable and have 8 electrons, it must make 4 total covalent bonds.

In prefer for oxygen to be stable and have 8 electrons, it must make 2 covalent bonds.

So, we can deduce that CO2 looks like this:

O=C=O

This molecule has two double bonds.

Pssst...Can I get a brainliest?

8 0

3 years ago

Which metalloid has three valence electrons? 1. Lithium 2. boron 3. silicon 4. aluminum 5. arsenic

iren [92.7K]

Answer:

boron

Explanation:

5 0

3 years ago

Read 2 more answers

¿Cuál será la masa molar del agua?, si el hidrógeno tiene una masa atómica H=1.0 uma y el Oxigeno de 16 uma. * 1 punto

nataly862011 [7]

Answer:

18

Explanation:

Sabemos que la fórmula química del agua es H2O.

Usando la información que; H = 1, O = 16, podemos calcular la masa molar del agua de la siguiente manera

[2 (1) + 16] = 18

Por tanto, la masa molar del agua es 18

3 0

3 years ago

What is the full meaning of DR.HERC

Sedaia [141]

Answer:

Determine the problem

Gather Research

Form a Hypothesis

Carry out an experiment

Record and analyse the results

Summarise the outcome in a Conclusion

Explanation:

Hope this helps :D

5 0

3 years ago

Read 2 more answers

A laboratory analysis of a 100 g sample finds it is composed of 1.8 g hydrogen, 56.1 g sulfur, and 42.1 g oxygen. What is its em

Neporo4naja [7]

Answer: The empirical formula is $H_2S_2O_3$

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mas of H = 1.8 g

Mass of S = 56.1 g

Mass of O = 42.1 g

Step 1 : convert given masses into moles.

Moles of H = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{1.8g}{1g/mole}=1.8moles$

Mass of S = $\frac{\text{ given mass of S}}{\text{ molar mass of S}}= \frac{56.1g}{32g/mole}=1.8moles$

Moles of O= $\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{42.1g}{16g/mole}=2.6moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For H = $\frac{1.8}{1.8}=1$

For S = $\frac{1.8}{1.8}=1$

For O = $\frac{2.6}{1.8}=1.5$

Converting to whole number ratios

The ratio of H: S: O= 2: 2: 3

Hence the empirical formula is $H_2S_2O_3$

7 0

3 years ago