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Crazy boy [7]
3 years ago
11

We can use thin layer chromatography to check if Starbuck coffee has caffeine. True False

Chemistry
1 answer:
Katarina [22]3 years ago
5 0

Answer:

false?

Explanation:

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Which answer best explains one of the reasons that oceans are salty?
Tatiana [17]

Answer:

(D) Water from streams and rivers carry salt to the ocean

Explanation:

Hope this helps!

8 0
3 years ago
A box is pushed across the floor for a distance of 5 metters with a force of 50N in 5 seconds. a. how much work is done? b. what
Reptile [31]

Answer:

50W

Explanation:

The formula and is

W = F × s

(force x distance)

W= 50 N× 5 m =250 N m=250 J

Done in 5 seconds the power is

p

=

W

t

where

t

=time

p

=

250

J

5

=

50 J

/s

=50 W

6 0
2 years ago
Read 2 more answers
The chemical properties of an atom are primarily determined by the number of
natulia [17]
Chemical properties are mainly determined by the number of valence electrons (electrons which can be gained, lost, or shared) in the atom. 
5 0
3 years ago
Help I will give brainiest
Nataly [62]

Answer:

The first theory states that the rings formed at the same time as the planet. Some particles of gas and dust that the planets are made of were too far away from the core of the planet and could not be squashed together by gravity. They remained behind to form the ring system.

Explanation:

7 0
3 years ago
When the human body is exposed to extreme cold, hypothermia can result and the body’s temperature can drop to 28.68°C. Convert t
salantis [7]

Answer:

299.83°K

Explanation:

So, kelvin is a means of measuring temperature, as the question implies. To convert Celsius, one form of measuring temperature, to Kelvin, another form of measuring temperature, we must know the conversion median. Our median is that 0°C = 273.15°K. So, now, as we know that 0°C = 273.15°K, 26.68°C = 273.15°K + 26.68°. Because 273.15K might as well be zero degrees celsius (according to our median 0°C = 273.15°K), we simply add 26.68° to 273.15K and get 299.83°K

3 0
2 years ago
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