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Kitty [74]
3 years ago
5

Water,h2o is an example of

Chemistry
2 answers:
expeople1 [14]3 years ago
4 0
Polair molecule, because the oxygen is slightly more negative than the two hydrogen atoms. Making water slightly negative. Due to the fact oxygen holds the to valence electrons more than the two hydrogen atoms do.
makvit [3.9K]3 years ago
3 0
A carbon free drink that is to keep your body more active and more alive I hope i helped
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If it takes 43.2 mL of 0.1 M NaOH to neutralize a 50 mL HCl solution, how many moles of NaOH were added to the HCl solution?
OleMash [197]

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8 0
3 years ago
Julio measured the weight of a grain of sand and found it to be 3.5 times 10 Superscript negative 10 kg. He also measured the we
Anvisha [2.4K]

The total weight of both objects : 7.035 x 10⁻⁸ kg

<h3>Further explanation</h3>

Given

The weight of a grain of sand : 3.5 x 10⁻¹⁰ kg

The weight of one hair from his eyebrow : 7 x 10⁻⁸ kg

Required

The total weight of both objects

Solution

Scientific Notation consists of 2 parts  

1. the first part: the first digit followed by the decimal point  

2. The second part: the power of 10 (the exponents).which shows the number of digits after the decimal point  

To add/subtract, the exponents must be the same and then add/subtract the coefficient

  • convert the largest exponent  (7 x 10⁻⁸)

7 x 10⁻⁸ = 700 x 10⁻¹⁰

  • add the coefficients  

\tt =(3.5+700)\times 10^{-10}\\\\=703.5\times 10^{-10}\\\\=7.035\times 10^{-8}

 

7 0
2 years ago
Suppose you have an atom composed of 19 protons, 20 neutrons and 19 electrons. what is the mass of this atom?
bazaltina [42]
Mass = PROTONS + neutrons. So, 19 +20 = 39.
(Don't confuse yourself between electrons and protons when they are equal because it could be an ion)
7 0
3 years ago
HELP THIS IS SCIENCE (No links or I'll rip off your fingers)
balu736 [363]

Answer:

D

Explanation:

Silver is a metal with high conductivity ....

Hope its right !

3 0
3 years ago
Read 2 more answers
At what pH are the moles of acid and base equal?
mihalych1998 [28]

Answer:

7

Explanation:

(Note: for a strong acid and strong base titration the equivalence point is at a pH=7. This is because at this point you have equal moles of added base as acid in the original solution. Therefore at the equivalence point the solution has formed a neutral salt and the pH is 7).

5 0
2 years ago
Read 2 more answers
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