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Snowcat [4.5K]
3 years ago
14

Using the perioduc table determine the mass of one mole in the element carbon​

Chemistry
1 answer:
weeeeeb [17]3 years ago
8 0

One mole of carbon atoms has a mass of exactly 12 g. Because magnesium atoms each have twice the mass of carbon atoms (24Mg compared with 12C), one mole of magnesium has a mass of 24 g. In fact, one mole of any element has a mass in grams that is equal to its relative atomic mass. One mole of iron has a mass of 56 g

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Convert to standard notation 1.312 x 10-2
Neporo4naja [7]
Hey, The answer is 11.12 I hope this helps you out 
4 0
3 years ago
Read 2 more answers
Write the net ionic equation for the reaction of aqueous copper(II) chloride with aqueous sodium phosphate. Remember to include
sergeinik [125]

Answer:

3 Cu²⁺(aq) + 2 PO₄³⁻(aq) ⇒ Cu₃(PO₄)₂(s)

Explanation:

Let's consider the molecular equation between aqueous copper(II) chloride and aqueous sodium phosphate.

3 CuCl₂(aq) + 2 Na₃PO₄(aq) ⇒ 6 NaCl(aq) + Cu₃(PO₄)₂(s)

The complete ionic equation includes all the ions and insoluble species.

3 Cu²⁺(aq) + 6 Cl⁻(aq) + 6 Na⁺(aq) + 2 PO₄³⁻(aq) ⇒ 6 Na⁺(aq) + 6 Cl⁻(aq) + Cu₃(PO₄)₂(s)

The net ionic equation includes only the ions that participate in the reaction (not spectator ions) and insoluble species.

3 Cu²⁺(aq) + 2 PO₄³⁻(aq) ⇒ Cu₃(PO₄)₂(s)

7 0
3 years ago
5. How many moles are equal to 2.4 x 1023 formula units of sodium chloride?
Zepler [3.9K]

Answer:

<h3>The answer is 0.4 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L}  \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{2.4 \times  {10}^{23} }{6.02 \times  {10}^{23} }  =  \frac{2.4}{6.02}  \\  = 0.398671096....

We have the final answer as

<h3>0.4 moles</h3>

Hope this helps you

7 0
3 years ago
The number of valence electrons of the element with the electron configuration 1s22s22p63s23p1 is :
lbvjy [14]
3
Let me know if you need/want an explanation
5 0
3 years ago
Plz help chemistry test
Nataly [62]

Answer:

plants take carbon dioxide out of the atmosphere and use the energy from sunlight to combine the carbon dioxide and water to form sugar and oxygen

4 0
3 years ago
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