What happens to paper chromatography in you leave it in water for too long?

Answers

Answer 1

Answer: Nothing, really, the paper itself just gets wet and thats it. One thing to be careful of is, though, is that the dye/pigment can get too diluted and it would be hard to distinguish each of them from each other.

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On Sunday NASA's SpaceX launched 4 astronauts into space for a mission lasting 5 months. They named their spacecraft RESILIENCE.In 4-6 sentences explain what the word RESILIENCE means to you. Also, why do you think they named their spacecraft that? Please respond to this prompt in your own words, there is no need to google!!!DO NOT GOOGLE IT!!

Which particle of the atom has no charge? A.
nucleus

B.
electron

C.
neutron

D.
proton

Answers

C, the neutron is the answer!

C. Neutron

Has no charge.

Write this number in standard notation.
1.986 x 10negative exponent 6 or 1.986 x 10^6

Answers

Answer:

$0.000001986$

Explanation:

We have the number $1.986*10^(-6)$ . Standard notation would basically be this number without the $10^(-6)$ part.

To get rid of this part, we need to move the decimal point 6 places to the left (we go left because it's negative 6, indicating division).

So, when we move the decimal point 6 places to the left, the resulting number is: $0.000001986$ , with 5 zeros after the decimal point before a nonzero number.

Thus, the answer is $0.000001986$ .

What is the mass of 225 cm ^3 of ethanol? ethanol has a density of 0.789 g/cm^3

Answers

Answer:

177.53 grams

Explanation:

To find this, change the density equation from $d=(m)/(v)$ to $dv=m$ , doing this will allow you to multiply your given density (0.789 g/cm^3) by your given volume (225cm^3), giving your mass of 177.53 grams.

Boiling point and melting point of a gas?

Answers

it depends on the altitude of where u live

How does a magnet separate mixtures?

Answers

It can only do that when one of the components of the mixture is a magnetic
material.

When you have that situation, you pass the magnet over the mixture ... shaking
the mixture if it's a dry mixture of powders or pieces ... and the magnetic part of
the mixture moves toward the magnet, while the nonmagnetic parts of the mixture
couldn't care less about the magnet and they just stay where they are.

It will separate when one of the elements found in the mixture is magnetic. This process can't be done in a compound as a compound is chemically bonded!

Which of these did your answer include?Each hydrogen atom is bonded to the oxygen atom with a single bond.
The oxygen atom has two lone pairs.
The molecule is bent.
Oxygen is more electronegative than hydrogen.
Each O-H bond is polar.
The molecule is asymmetrical.
The asymmetry and the polar bonds produce an overall molecular dipole.
The oxygen atom has a partial negative charge, and the hydrogen atoms have a partial positive
charge.

Answers

The O2 atoms have a covalent bonding and are attracted to the electrons more strongly.

The sharing of the electrons gives them water molecules a slightly negative change near the O2 atom. A slight positive change near the H2.

Hence the option D is correct.

Learn more about the did your answer includes.

brainly.com/question/15913753.

The oxygen atom has a partial negative charge and the Hydrogen atoms have a partial positive charge

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