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Vitek1552 [10]
3 years ago
15

What are parts of the nervous system

Chemistry
1 answer:
Vlad1618 [11]3 years ago
6 0

Answer:

the brain and the spinal cord are the two main parts.

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Classify each of the following as a homogeneous or heterogeneous substance.
Mnenie [13.5K]

Answer:

a). iron ore - is a heterogeneous substance.

b). quartz - is a homogeneous substance.

c). granite - is a heterogeneous substance.

d). energy drink - is a heterogeneous substance.

e). oil-and-vinegar salad dressing - is a heterogeneous substance.

f). salt - is a homogeneous substance.

g). rainwater - is a heterogeneous substance.

h). nitrogen - is a homogeneous substance.

Explanation:

a). iron ore - is a heterogeneous substance as iron core contains iron and other impurities

b). quartz - is a homogeneous substance as it is only made up of carbon

c). granite - is a heterogeneous substance as it is made up of multiple minerals.

d). energy drink - is a heterogeneous substance as it contains various substances mixed in it

e). oil-and-vinegar salad dressing - is a heterogeneous substance as oil and vinegar itself are different compounds

f). salt - is a homogeneous substance as it only contains one type of molecule

g). rainwater - is a heterogeneous substance as it contains water and other minerals

h). nitrogen - is a homogeneous substance as it is only made of one type of molecule.

5 0
1 year ago
Which of the following is the final stage of a low mass star? *<br> 1 point
Nady [450]
You are actually giving 5 points. Ps I just got five points for telling you that
6 0
3 years ago
If a sample of radioactive isotopes takes 60 minutes to decay from 200 grams to 50 grams, what is the half-life of the isotope
qaws [65]

Answer:

<u><em>I HOPE IT WILL BE YOUR ANSWER:</em></u>

Explanation:

As given

60 min = 50 gm        (1)

then we know half-life mean half amount decay time

so we can write as the half of 200 is 100 gm hence

T 1/2 = 100               (2)

solving these two equation by cross multiplication we will get

T 1/2 = 120 min

<em><u>THANKS FOR ASKING QUESTION</u></em>

6 0
3 years ago
A sample of gas has a volume of 12.0 L and a pressure of 2.00 ATM. If the pressure of gas is increased to6.00 ATM, what is the n
earnstyle [38]

Answer:

4L

Explanation:

8 0
3 years ago
Carbon burns with oxygen to produce carbon dioxide gas what is the correct way to write the chemical reaction
larisa86 [58]
C+O2=CO2. The 2 would be smaller than the chemical symbol. Hope this helped
8 0
3 years ago
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