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3 years ago

Yo mismo no hablo español, así que espero que esto sea realmente legible--

2 answers:

6 0

Translation:
I do not speak spanish, so i hope this is legible—

What are the different ways the simulation shows that the equation balances visually.

For every reaction that’s balanced, indicates the total number of molecules ( the large coefficients ) in the table.

The reaction number total of molecules

The reactive side ( left ) The product ( right )

Make Ammonium

Water separated

Combust(?) Methane

Is the number of molecules totals in the left side of a balanced equation, is always the same number of molecules that totals on the right side of the equation? Explain your answers.

For every balanced reaction, indicated the total number of atoms ( the individual atoms ) in the table. Suggestion: this can require multiplying that subscript for the coefficient of some of the atoms.

Example: 2NH3: There’s 2 atoms of N and 6 atoms of H ( 2 x 3 ).

The reaction number of the total of atoms.

The reactive side ( left ) The product side ( right )

Make Ammonium

Separate Water

Combust Methane

Does the number of the atoms total to the left side of a equation balanced is always the same number of atoms total in the right side of the equation?

What strategy did you used when you played the game of the chemical equation of the equivalent? What atoms were more easier to start examining to try to balance the equations? Did it require trial and error ?

In the simulation, could you use the numbers that didn’t enter ( like 1/2 or 0.43 ) for the coefficients of a balanced equation?

Deffense [45]3 years ago

4 0

Answer:

what

Explanation:

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You decided to prepare a phosphate buffer from solid sodium dihydrogen phosphate (NaH2PO4) and disodium hydrogen phosphate (Na2H

KIM [24]

Answer:

For disodium hydrogen phosphate:

5.32g Na2HPO4

For sodium dihydrogen phosphate:

7.65g Na2HPO4

Explanation:

First, you have to put all the data from the problem that you going to use:

-NaH2PO4 (weak acid)

-Na2HPO4 (a weak base)

-Volume = 1L

-Buffer pH = 7.00

-Concentration of [NaH2PO4 + Na2HPO4] = 0.100 M

What we need to find the pKa of the weak acid, in this case NaH2PO4, for that you need to find the Ka (acid constant) of NaH2PO4, and for this we use the pKa of the phosphoric acid as follow:

H3PO4 = H2PO4 + H+ pKa1 = 2.14

H2PO4 = HPO4 + H+ pKa2 = 6.86

HPO4 = PO4 + H+ pKa3 = 12.4

So, for the preparation of buffer, you need to use the pKa that is near to the value of the pH that you want, so the choice will be:

pKa2= 6.86

Now we going to use the Henderson Hasselbalch equation for the pH of a buffer solution:

pH = pKa2 + log [(NaH2PO4)/(Na2HPO4)]

The solution of the problem is attached to this answer.

Download odt

7 0

3 years ago

How do you draw acetone using a Bohr model?

Inessa [10]

Explanation:

this is the one i found.....

6 0

2 years ago

What happens to the energy that is lost when water freezes?

SVEN [57.7K]

<span>As we know through the principle of conservation of energy, energy can neither be created nor destroyed. Therefore, the energy removed from the water in order to make it freeze is absorbed by the surroundings. This is why the surroundings in which freezing is taking place are below freezing. This is more easily illustrated in the example of condensation. If you were to hold a plate over a pot of boiling water, some of the water would give its energy to the plate and condense on its surface.</span>

4 0

3 years ago

Read 2 more answers

What molecules can be made using hydrogen, carbon, and nitrogen?

Yuki888 [10]

Answer:

Ammonia

Explanation:

Ammonia is the simplest possible molecule made with nitrogen and hydrogen. Methane is the simplest possible molecule made of carbon and hydrogen. Methanol is like methane, but it also has one oxygen atom as well.

8 0

3 years ago

Considering the temperature vs. time graph below, how does the temperature at the beginning of a change of state

Cloud [144]

Answer:

The temperature is always lower.

Explanation:

The temperature is always lower at the end of the state as compared to beginning of the state. We can see in the given data, the temperature is higher at the beginning i. e. 140 degree Celsius but with the passage of time, the temperature of a state decreases constantly and the temperature at the end is lower i. e. 20 degree Celsius. So we can conclude that the temperature is always lower.

6 0

3 years ago

Read 2 more answers