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arlik [135]
3 years ago
11

A skateboarder is going down a ramp. Which statements about the energy of the skateboarder are correct

Chemistry
1 answer:
Llana [10]3 years ago
7 0

I couldnt see any choices but if any of the awnsers mention the skateborder having pontential energy turning into kinetic energy that one would be right

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C2H4(g) + H2(g) ----> C2H6(g)
sertanlavr [38]
D because wants you add the equation it should increase temp but decrease the value in pressure
4 0
3 years ago
if you are told to get 100 mL of stock solution to use to prepare smaller size sample for an experiment, which piece of glasswar
fgiga [73]

Answer:

A beaker  

Step-by-step explanation:

Specifically, I would use a 250 mL graduated beaker.

A beaker is appropriate to measure 100 mL of stock solution, because it's easy to pour into itscwide mouth from a large stock bottle.

You don't need precisely 100 mL solution.

If the beaker is graduated, you can easily measure 100 mL of the stock solution.

Even if it isn't graduated, 100 mL is just under half the volume of the beaker, and that should be good enough for your purposes (you will be using more precise measuring tools during the experiment).

6 0
3 years ago
what are two or more substances that are together in the same place, but are not chemically combined in a set ratio. They can be
GuDViN [60]
Yahoo has the answer to that question. because i looked it up on yahoo..
6 0
3 years ago
Which of the following is/are INCORRECT conversions in the metric system? Circle ALL that are false - there may be more than one
Artist 52 [7]

Answer:

(b) 50 mL = 0.50 L

Explanation:

Metric system is a measurement system that uses decimalized in all their factor, which mean every rank difference can be expressed as a factor of 10(deci=10). The decimalized number makes it easier to convert the unit, make the metric system easier to be learned and used.  

The Metric system will use a prefix to determine the factor, a kilo is 1000, mili is 1/1000, centi is 1/100, pico is 1/10^12.

(a) 1 km = 1000 m  

True, kilo is 1000

(b) 50 mL = 0.50 L

This option is false. mili is 1/1000, so 50/1000= 0.05 L

(c) 125 mm = 12.5 cm  

True, mili is 1/1000 while centi is 1/100.  

So 125mm will be: 125mm * 100mm/1000cm= 12.5cm

(d) 23 pm = 0.000  000  000  023 m

True, pico is 10^-12

4 0
3 years ago
Discard the water from the first step and re-fill the tall drinking water glass with the chilled water. Then slowly pour a small
inna [77]

Answer:

The hot water remains at the top of chilled water.

Explanation:

The hot water remains at the top of chilled water because hot water has less denser as compared to chilled water. Due to higher density of chilled water, it remains at the bottom due to its greater mass while on the other hand, the hot freshwater goes upward and spreads at the top of the chilled water due to lower mass so when the hot water is added to the chilled water, hot water remains at the top.

6 0
3 years ago
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