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3 years ago

Equivalencia de un año luz en SI

Chemistry

1 answer:

Aleksandr [31]3 years ago

4 0

Hi uhh i've never really typed in Spanish but here I go! :)

Un ano luz es equivalente a 9.467 PM

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After measuring the mass of water, the data is averaged and it is determined that the mean of 4

gladu [14]

Answer:

Explanation:

8 0

3 years ago

PLEASE HELP WITH ALL! Do the following Mole conversions:

ExtremeBDS [4]

Answer:

The answer to your question is below

Explanation:

1) number of molecules = x

23 g of CoCl₂

Molar mass CoCl₂ = 59 + 71 = 130 g

130 g ------------------ 6.023 x 10²³ molecules

23 g ----------------- x

x = (23 x 6.023 x 10²³) / 130

x = 1.066 x 10²³ molecules

3.2 moles of H₃PO₄ to grams

Molar mass = 3 + 31 + (16 x 4)

= 98 g

98 g ------------------- 1 mol

x ------------------- 3.2 moles

x = (3.2 x 98)/1

x = 313.6 g

2.2 moles of (NH₄)₂ to grams

Molar mass = (14 x 2) + (8 x 1)

= 36 g

36 g of (NH₄)₂ ---------------- 1 mol

x ---------------- 2.2 moles

x = (2.2 x 36)/1

x = 79.2 grams

Molecules = ? 4.5 g of NH₄SO₂

Molar mass = 14 + 32 + 32 + 4

= 82 g

82 g of NH₄SO₂ --------------- 6.023 x 10²³ molecules

4.5 g ---------------- x

x = (4.5 x 6.023 x 10²³) / 82

x = 3.3 x 10²³ molecules

Liters of N₂ = ? 7.9 x 10³⁰ particles

22.4 l --------------------- 6.023 x 10²³ particles

x -------------------- 7.9 x 10³⁰

x = (7.9 x 10³⁰ x 22.4) / 6.023 x 10²³

x = 2.93 x 10⁸ particles

7 0

3 years ago

Which does a meandering stream look like?

Norma-Jean [14]

The answer is D.U-shape

8 0

4 years ago

Read 2 more answers

What is a Boitic factor

svetoff [14.1K]

Answer:

Biotic components, or biotic factors, can be described as any living component that affects another organism or shapes the ecosystem. This includes both animals that consume other organisms within their ecosystem, and the organism that is being consumed

Explanation:

also you spelt it wrong

4 0

4 years ago

When the following oxidation-reduction occurs, what is the balanced reduction half-reaction after the electrons in both half rea

Lostsunrise [7]

Answer : The balanced reduction half-reaction is:

$3Cu^{2+}+6e^-\rightarrow 3Cu$

Explanation :

Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.

The given balanced redox reaction is :

$Al(s)+Cu^{2+}(aq)\rightarrow Al^{3+}(aq)+Cu(s)$

The half oxidation-reduction reactions are:

Oxidation reaction : $Al\rightarrow Al^{3+}+3e^-$

Reduction reaction : $Cu^{2+}+2e^-\rightarrow Cu$

In order to balance the electrons, we multiply the oxidation reaction by 2 and reduction reaction by 3 and then added both equation, we get the balanced redox reaction.

Oxidation reaction : $2Al\rightarrow 2Al^{3+}+6e^-$

Reduction reaction : $3Cu^{2+}+6e^-\rightarrow 3Cu$

The balanced redox reaction will be:

$2Al(s)+3Cu^{2+}(aq)\rightarrow 2Al^{3+}(aq)+3Cu(s)$

Thus, the balanced reduction half-reaction is:

$3Cu^{2+}+6e^-\rightarrow 3Cu$

6 0

3 years ago