Do different spheres heat at different rates?

sweet-ann [11.9K]

Currently in this equation, you have 2 hydrogen atoms and 2 oxygen atoms on the left, and then 2 hydrogen atoms and 1 oxygen atom on the right. To balance, you would need to even out the oxygens, so we can first place a 2 in front of H2O to get:
H2 + O2 -> 2H2O

Now, however, you can see that we have too many hydrogen atoms on the right, so to get the final answer, we add a 2 in front of hydrogen on the left:

2H2 + O2 -> 2H2O

I hope this helps!

3 0

3 years ago

Read 2 more answers

A student carried out this reaction with methane as the limiting reagent. A 12.0 g quantity of methane was used, and the student

Sophie [7]

Answer:

The percent yield is 66.7%

Explanation:

1. The balanced chemical reaction to obtain carbon dioxide from the methane is:

$CH_{4}+2O_{2}=CO_{2}+2H_{2}O$

2. Calculathe the theoretical quantity of carbon dioxide.

As the problem says that the limiting reagent is the methane, all the calculations will be made from this quantity:

$12.0gCH_{4}*\frac{1molCH_{4}}{16gCH_{4}}*\frac{1molCO_{2}}{1molCH_{4}}*\frac{44gCO_{2}}{1molCO_{2}}=33gCO_{2}$

3. Calculate the percent yield:

Percent yield = $\frac{actualyield}{theoreticalyield}*100$

Percent yield = $\frac{22.0g}{33.0g}*100$

Percent yield = 66.7%

7 0

3 years ago

What happens if you choose the wrong solvent while setting up your NMR experiment?

MissTica

Answer:

Please see the answer..hope its works

Explanation:

The NMR spectrometer will acquire data for the wrong chemical shift range and you will potentially have skewed data when opening spinworks-NMR spectrometer examines a specific 12 ppm range based on the expected solvent peak, and if a different solvent is used a different range may be examined

To explain further, If the user declares the wrong solvent, one of two things may happen. Firstly, the spectrometer may not be able to establish a deuterium lock and will report an error and not run the sample. Secondly, the spectrometer may be able to establish a lock despite the fact that the deuterium signal is off resonance. If the lock is established, the field strength will be set to a value appropriate to put the declared solvent signal on-resonance. When a proton NMR spectrum is collected, the chemical shift scale will be incorrect by an amount equal to the proton chemical shift difference between the true solvent and the declared solvent.

7 0

4 years ago

A one or two letter abbreviation for a chemical element. True or false

Feliz [49]

Answer:

True

Explanation:

All the chemical elements have their abbreviations as one or two letters

The first letter in the abbreviation is a capital letter and the second letter is always a small letter

Majority of abbreviations are based on their english names

3 0

3 years ago