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Sholpan [36]
3 years ago
11

Mendeleev used his periodic table of elements to

Chemistry
1 answer:
pishuonlain [190]3 years ago
7 0
<span>Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.
</span>Mendeleev rewrote each edition of Principles of Chemistry<span>, including all new scientific data-particularly confirmations of the periodic law-and reanalyzing difficulties that had arisen to hinder its confirmation (inert gases, radioactivity, radioactive and </span>rare-earth elements<span>)
</span>he wanted to prove that he was right.
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Si una masa dada de hidrógeno ocupa 40 litros a 700 grados torr. ¿Qué volumen ocupará a 1 atmósfera de presión? (dar la presión
Svetach [21]

Answer:

V_2=36.84L

Explanation:

Hola,

En este caso, podemos usar la ley de Boyle, la cual nos permite analizar el comportamiento volumen-presión en un gas ideal de manera inversamente propocional:

P_1V_1=P_2V_2

Así, dado el volumen y la presión inicial, la cual se convierte a atmósferas (760 torr = 1atm), calculamos el volumen final a 1 atm como se muestra a continuación:

V_2=\frac{P_1V_1}{P_2}=\frac{700torr*\frac{1atm}{760torr}*40l }{1atm}\\  \\V_2=36.84L

Saludos!

7 0
3 years ago
Read 2 more answers
What is the oxidation state of a lone element?
ki77a [65]

Answer:

i think the answer is b or c

7 0
3 years ago
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Which coefficient should appear in front of LiNO3 in the balanced equation?
ikadub [295]
Missing chemical reaction:
Pb(NO₃)₂(aq) + Li₂SO₄(aq) → PbSO₄(s) + LiNO₃(aq).
Answer is:
Balanced chemical reaction:
Pb(NO₃)₂(aq) + Li₂SO₄(aq) → PbSO₄(s) + 2LiNO₃(aq).
Number of atoms on both side of chemical reaction must be the same. There is two lithium atoms, two nitrogs, ten oxygen atoms, one lead and one sulfur on both side of balanced chemical reaction.
4 0
4 years ago
If a substance cannot be broken down chemically into a simpler substance, what is it?
Nikitich [7]

Answer: It's element, they can't be broken down to anything other than what they are.

DO NOT PUT YOUR ANSWER AS WHAT THE OTHER PERSON WHO ANSWERED PICKED BECAUSE THEY'RE ANSWER IS WRONG!

5 0
3 years ago
When solid calcium carbonate is heated, it decomposes according to the reaction: CaCO3(s) ⇄ CaO(s) + CO2(g) Kp = 0.50 A sample o
blagie [28]

Explanation:

Relation between K_{p} and K_{c} is as follows.

            K_{p} = K_{c} [RT]^{\Delta n}

Given,   temperature = 830^{o}C = (830 + 273) K = 1103 K

            R = 8.314 J/mol K

       \Delta n = 1 - 0 = 1

Now, putting the given values into the above formula as follows.

              K_{p} = K_{c} [RT]^{\Delta n}

                 0.5 = K_{c} \times (8.314 \times 1103)^{1}

                     K_{c} = 5.452 \times 10^{-3}

ICE table for the given reaction will be as follows.

                  CaCO_{3}(s) \rightleftharpoons CaO(s) + CO_{2}(g)

Initial:           c                        -          -  

Equilibrium:  (c - x)               x         x

       K_{c} = [CO_{2}]

          5.452 \times 10^{-3} = x

Hence, same amount of CaO is produced.

Moles of CaO = 5.452 \times 10^{-3}

    Mass of CaO = 5.452 \times 10^{-3} \times 57 g/mol

                          = 0.310 g

Thus, we can conclude that 0.310 g of CaO produced when equilibrium is established.

8 0
3 years ago
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