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2 years ago

Pleasw help me do you have any trick to memrise formulas of ores?

Chemistry

1 answer:

Karolina [17]2 years ago

7 0

Answer:

If you're trying to memorize something, I'd suggest you'd look over the piece multiple times, and if that doesn't help maybe turn it into a little song that you can remember.

Explanation:

Personally I find making a little song easier to remember, and if that doesn't help, just make sure you keep trying, and maybe even do a little bit of digging on Google to find more things such as songs that have already been made to memorize the piece.

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A system does 591 kJ of work and loses 256 kJ of heat to the surroundings.

Mars2501 [29]

Answer:

-847kj

Explanation:

Delta E= -256+-591

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2 years ago

PLEASE HELP!!!!!!!!!

andreev551 [17]

The average atomic mass of the imaginary element : 47.255 amu

<h3>Further explanation </h3>

The elements in nature have several types of isotopes

Isotopes are elements that have the same Atomic Number (Proton)

Atomic mass is the average atomic mass of all its isotopes

Mass atom X = mass isotope 1 . % + mass isotope 2.% ..

isotope E-47 47.011 amu, 87.34%

isotope E-48 48.008 amu, 6.895

isotope E-49 50.009 amu, 5.77%

The average atomic mass :

$\tt avg~mass=0.8734\times 47.011+0.06895\times 48.008+0.0577\times 50.009\\\\avg~mass=41.059+3.310+2.886\\\\avg~mass=47.255~amu$

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2 years ago

PLEASE HELP WILL GIVE BRAINLIEST

Phoenix [80]

Answer:

Coefficients represents no of moles while subscripts represent no of atoms.

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2 years ago

Read 2 more answers

21 Which process is used to determine the concentration of an acid?

Inessa05 [86]

Answer:

4) Titration

Explanation:

Titration is a common process used to determine the concentration of acids. It does this by adding a solution of base with a known concentration to the acid until it reaches neutralization.

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3 years ago

Which best describes a compound such as sodium chloride?

gayaneshka [121]

Answer:

check it below

Explanation:

NaCl; Sodium Chloride is an ionic compound formed by sodium and Chlorine.

Ionic bond is very strong, It can't be separated back to sodium and chlorine just by physical change. Chemicals which are more reactive can displace ions, thus seperate it

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2 years ago

Pleasw help me do you have any trick to memrise formulas of ores?​

Pleasw help me do you have any trick to memrise formulas of ores?