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vaieri [72.5K]
2 years ago
9

Look at the wave in the picture. If it has a wavelength of 2 cm, how far apart are points A and B? How do you know?

Chemistry
1 answer:
Harlamova29_29 [7]2 years ago
8 0

Answer:

picture is not there.....

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How could you distinguish octane from 1-octene by a simple<br> chemical test?
lara [203]

卂几丂山乇尺

As the name indicate that in 1-octene there is a double bond on the first position in the eight carbon atoms chain THUS to detect its presence, we use bromine water test;

Add bromine water to the test tube containing octane/octene if the brown colour of bromine water disappears then octene is present.

3 0
3 years ago
Read 2 more answers
What is the difference between stable and unstable isotopes
Alja [10]

Answer:

stable isotopes have stable nuclei and do not show radioactivity, but for unstable isotopes it is the opposite

Explanation:

hope this helps, ask more questions if needed.

6 0
3 years ago
Which of the following are physical characteristics of blood? 1. it is more viscous than water 2. its temperature is about 38ºC
yawa3891 [41]

Explanation:

A property which does not bring any change in chemical composition of a substance is known as physical property.

For example, blood is more viscous than water, its pH is slightly alkaline, its temperature is about 38^{o}C (100.4^{o}F)  .

On the other hand, a property which changes chemical composition of a substance is known as a chemical property.

For example, precipitation, reactivity, toxicity etc are chemical property.

Sometimes, the change in color of a substance can also occur due to a chemical change.

Thus, we can conclude that following are the physical characteristics of blood.

  • it is more viscous than water.
  • its temperature is about 38^{o}C (100.4^{o}F).
  • the pH is slightly alkaline.
  • it is about 8% of one’s total body weight.
6 0
3 years ago
A molecule of hydrogen gas is made up of pairs of hydrogen atoms in which each atom shares its electron to form a(n) ____.
andreyandreev [35.5K]

Answer:

covalent bond

Explanation:

a covalent bond forms when electrons are shared between two nonmetals

plz mark as the brainliest

6 0
2 years ago
The equation for the formation of water from hydrogen gas and oxygen gas is 2H2+O2→2H2O.
inn [45]

Answer:

180g

Explanation:

H:1   O:16

2H2+O2 → 2H2O

 2   2(16)       2(1)+(16)

        32              18

Now,

       32g of O → 2(18)g of H2O

       160g of O → 2(18)g divides by 32g times 160g

                            =180g

5 0
2 years ago
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