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myrzilka [38]
3 years ago
5

Question 8 Review Which metal jis most easily oxidized?

Chemistry
2 answers:
tester [92]3 years ago
8 0

Answer:

The order of some common metals in the electromotive series, starting with the most easily oxidized, is: lithium, potassium, calcium, sodium, magnesium, aluminum, zinc, chromium, iron, cobalt, nickel, lead, hydrogen, copper, mercury, silver, platinum, and gold.

Explanation:

ASHA 777 [7]3 years ago
4 0

Answer:

starting with the most easily oxidized, is: lithium, potassium, calcium, sodium, magnesium, aluminum, zinc, chromium, iron, cobalt, nickel, lead, hydrogen, copper, mercury, silver, platinum, and gold.

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A rock is dropped into a graduated cylinder filled with 35 mL of water.
avanturin [10]

Answer:

5 cm³.

Explanation:

From the question given above, the following data were obtained:

Volume of water = 35 mL

Volume of water + Rock = 40 mL

Volume of Rock =.?

The volume of the rock can be obtained as follow:

Volume of Rock = (Volume of water + Rock) – (Volume of water)

Volume of Rock = 40 – 35

Volume of Rock = 5 mL.

Finally, we shall convert 5 mL to cm³.

This can be obtained as follow:

1 mL = 1 cm³

Therefore,

5 mL = 5 mL × 1 cm³ / 1 mL

5 mL = 5 cm³

Thus, we can say that the volume of the rock is 5 cm³.

7 0
3 years ago
What are the products of the chemical reaction that occurs when zinc metal is added to an aqueous solution of hydrochloric acid?
Alinara [238K]
Zn(s) +2 HCl(aq) ---> ZnCl2(aq) +H2(g) (products are Zinc chloride and hydrogen gas)
3 0
3 years ago
Which atom has a configuration that ends in 5s 2?
Alla [95]

Answer:  Zirconium [Kr]4d :)

Explanation:

4 0
3 years ago
A student needed to make a 3 g/L NaCl solution. The student weighed 3 g of NaCl in a beaker and measured 1 L of water in a 1L vo
hoa [83]

Answer:

The answer is in the explanation.

Explanation:

A solution is defined as the <em>homogeneous mixture </em>of a solute (In this case, NaCl) and the solvent (water).

To prepare 1L of the solution, the student can weigh the 3g of NaCl in the volumetric flask but need to add slowly water to dissolve the NaCl (That is very soluble in water). When all NaCl is dissolved the student must transfer the solution to the 1L volumetric flask. Then, you must add more water to the beaker until "Clean" all the solute of the beaker to transfer it completely to the volumetric flask.

8 0
2 years ago
luminum and oxygen react according to the following equation: 4Al(s) +3O2(g) --&gt; 2Al2O3(s) What mass of Al2O3, in grams, can
Slav-nsk [51]

Answer: 8.7 grams

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.  

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{4.6g}{27g/mol}=0.17moles

4Al(s)+3O_2(g)\rightarrow 2Al_2O_3(s)

As oxygen is in excess, Aluminium is the limiting reagent and limits the formation of products.

According to stoichiometry:

4 moles of aluminium give = 2 moles of Al_2O_3(s)

Thus 0.17 moles of aluminium give=\frac{2}{4}\times 0.17=0.085mol

Mass of Al_2O_3=moles\times {\text {molar mass}}=0.085\times 102g/mol=8.7g

Thus the mass of Al_2O_3(s)  is 8.7 grams

8 0
3 years ago
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