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just olya [345]
3 years ago
13

Un compuesto químico se puede representar gráficamente por medio de una

Chemistry
1 answer:
Mariana [72]3 years ago
4 0

Answer:

i dont speak spanish

Explanation:

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A mineral sample has a mass of 35 g. When it is dropped into a graduated cylinder with 25mL of water, the volume of the water ri
lana [24]

Answer:

3.5g/ml

Explanation:

density=mass/volume

the mass of the mineral we have been given to be 35g

and it's volume is found by subtracting the initial volume from the final volume which is 35ml-25ml=10ml

4 0
3 years ago
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Calculate the concentration of OH-in a solution that has a concentration of H+ = 8.1 x 10^−6 M at 25°C. Multiply the answer you
Nat2105 [25]

Answer:

The answer is 12.35

Explanation:

From the question we are given that the concentration of H^{+} is 8.1 * 18^{-6}M

 Generally The rate equation is given as

                                                           K_{w} = [H^{+} ][OH^{-} ]

and K_{w} the rate constant has a value 1 * 10^{-14}

     Substituting and making [OH^{-}] the subject we have

                                                 [OH^{-} ] = \frac{1 * 10^{-14}}{[H^{+}]} = \frac{1 * 10^{-14}}{8.1 *10^{-6}} =1.235 * 10^{-9}

                                                  [OH ^ {-}] = 1.235 * 10^{-9}M

                            Multiply the value by 10^{10} as instructed from the question we have  

                       Answer =   1.235 * 10 ^{-9} * 10^{10} = 12.35

Hence the answer in 2 decimal places is 12.35

7 0
3 years ago
How many electrons does carbon have if it has six protons?
lidiya [134]

it is 6, all isotopes of carbon have 6 electrons and 6 protons which is why its atomic number is 6

4 0
3 years ago
Answer question number 6
Romashka [77]
It will be the first one
4 0
4 years ago
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After measurements or observations are made in a scientific investigation, it is most appropriate to
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Jot the claim or evidence in a notebook
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3 years ago
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