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3 years ago

15

What is the empirical formula of 3.10g of phosphorous and 9.50g of fluorine?

1 answer:

grandymaker [24]3 years ago

6 0

There are 2.5 oxygen for every phosphorus atom.

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Write the scientific notation in numerals. 1.2 x 104

ivanzaharov [21]

1.2*104 is 12000 it is easy just try ur best

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3 years ago

Why did Thomson’s results from experimenting with cathode rays cause a big change in scientific thought about atoms?

IceJOKER [234]

Answer:

D, because he discovered electrons

Explanation:

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The following equation is balanced correctly. 4C2H6 + 7O2 --> 6H2O + 4CO2<br> True <br> False

Ostrovityanka [42]

Answer: False

Explanation:

4C2H6 + 7O2 --> 6H2O + 4CO2

8 Carbons on the reactant side, but 4 Carbons on the Product

24 Hydrogens on Reactant, 12 H on product

But Oxygen is balanced, 14 on each side

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3 years ago

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What is the term for a solid that forms when two solutions are mixed? a precipitate a gas a suspension a solution

SashulF [63]

When a solid forms with two solutions are mixed it is a precipitate

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3 years ago

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A student carries out this chemical reaction in a beaker:

nydimaria [60]

Answer:The correct answer is option (C).

Explanation:

$Zn+CuCl_2\rightarrow Cu+ZnCl_2$

After the reaction between Zinc and copper(II) chloride, Zinc chloride and copper will be obtained as a product. This reaction occurs because zinc is more reactive than copper which displaces the copper from its aqueous solution.

The student will expect to find copper metal at bottom of the beaker with aqueous solution of zinc chloride.

Hence the correct answer is option (C).

7 0

3 years ago