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weqwewe [10]
3 years ago
6

Which of the following is not an alteration of a document?

Chemistry
1 answer:
forsale [732]3 years ago
5 0
Charring is not an alteratiom of a document
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Energy level of diagram​
nlexa [21]

Answer:

<em>The energy level diagram is used to represent the energy states available in each atom. When an electron is in an energy state, it emits nor absorbs radiation. A photon is emitted or absorbed when an electron transitions from one energy state to another.</em>

Explanation:

6 0
3 years ago
What volume of ammonia in liters, at STP, can be produced from 2.0 kg of hydrogen gas, H2, and an excess of nitrogen gas, N2? N2
Sonbull [250]
Ok so rewrite the equation for yourself :).

N2 + 3H2 -> 2NH3 (Always check if it is balanced).

Ok so we have 2kg of hydrogen conver this to grams and then to moles.
2kg -> 2000g
2000g divide by R.M.M of H2
R.M.M
2H - 2 * 1 -> 2
2000/2 - 1000 moles.
Look at the ratio of H2 to 2NH3.
We see that we get 2NH3 for every H2 therefore the ratio is 1:2.
This means that we HAVE 2000 moles of 2NH3.
At stp. we know that 1 moles = 22.4 Litres
We have 2000 moles that means that we produce 44800 litres of NH3 at stp.
2000 * 22.4 - 44800
Hope this helps :).

4 0
3 years ago
The strength of an acid is affected by the polarity of the bond connected to the acidic hydrogen. The more highly polarized this
alexgriva [62]

Answer:

Explanation:

Oxyacids are acid containing oxygen; they are also known as acid-alcohol or acid-phenol. As said earlier, the strength of these acids increases with increases in the polarity of these compounds. So, what makes the polarity is as a result of the electronegative substituents attached to it. Halogen family possesses the highest electronegativity in the periodic table, and electronegativity decreases down the group.

The ranking of the oxyacids in order of decreasing acid strength from strongest to weakest acid is:

HClO3 > . HClO2 > HClO > HBrO

5 0
3 years ago
9. What type of wave vibrates parallel to the direction of travel
Finger [1]

Answer:

The highest point on a wave is the Crest_, while the lowest point is the Trough Get a ruler and measure the wavelength and amplitude of the above wave.  (a) Waves P and Q have the same frequency, but wave P has twice the  What type of wave is produced when you move one end of a horizontal spring up

Explanation:

5 0
3 years ago
Which of the following elements is used to make metal products?
valina [46]

Its Iron and Potassium because if you look at the periodic table,and you go down the list of metals, you can see what metals are there.

8 0
3 years ago
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