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snow_lady [41]
3 years ago
7

I don’t understand how to do this

Chemistry
1 answer:
padilas [110]3 years ago
6 0

Answer:

do what?????

Explanation:

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The molar mass of hydrogen (H2) is 2.02 g/mol. A sample contains 4.00 mol of H2. What is the mass, in grams, of this sample? 1.9
lianna [129]
I thought I could make you day so here is your Anwser.The mass of a sample containing 4.00 mol of H2 is 8.08 g. The molar mass of hydrogen (H2) is 2.02 g/mol. In other words, there are 2.02 g in 1.00 mol of H2. The question is how many grams are in 4.00 mol of H2. Let's use proportion: 2.02 g : 1.00 mol = x : 4.00 mol. x = 2.02 g * 4.00 mol : 1.00 mol. x = 8.08 mol. Thus, there are 8.08 g of the sample of 4.00 mol of H2.

3 0
3 years ago
Read 2 more answers
John traveled on a motorbike a distance of 1,500 meters north to get to the nearest shopping center. He then turned back south a
ivolga24 [154]

Answer:

50 Meters North

Explanation:

Displacement is the distance/direction from the start point to

the ending point, regardless of which route you took from the start to the end.

So, you would simply subtract:

1,500 meters North- 1,450 meters South= 50 meters North

5 0
3 years ago
Hi question, what number should I change the 9 to so it's balanced?
Delicious77 [7]

Answer:

3

Explanation:

6 0
3 years ago
Draw the resonance structures for (SCN)".
Phantasy [73]

Answer : The resonance structure of SCN is shown below.

Explanation :

Resonance structure : It is defined as when more than one Lewis structure can be drawn, the molecule or ion is said to have resonance.

Resonance is the concept where electrons (bonds) are delocalized over three or more atoms which cannot be depicted with one simple Lewis structure.

First we have to draw Lewis-dot structure.

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, SCN

As we know that sulfur has '6' valence electrons, carbon has '6' valence electrons and nitrogen has '5' valence electron.

Therefore, the total number of valence electrons in SCN = 6 + 4 + 5 = 15

According to Lewis-dot structure, there are 7 number of bonding electrons and 8 number of non-bonding electrons.

In SCN, carbon atom is the central atom and sulfur and nitrogen are the neighboring atoms.

The resonance structure of SCN is shown below.

3 0
4 years ago
A ball is dropped from a height of 20 feet onto a trampoline. When it hits the trampoline, it creates a 2-foot depression in the
Alisiya [41]
The trampoline's elastic potential energy is transformed into kinetic energy when it returns to its original position.
The ball's gravitational potential energy become kinetic energy when it drops. Pls give brainliest
8 0
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