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3 years ago

15

Mr X was accused of speeding along a highway. He was travelling at different speeds,but an average speed of 80 km/h. Based on th

r given information, is Mr X gulity or innocent?

1 answer:

vladimir1956 [14]3 years ago

7 0

Mr x is guilty
hope u got ur and

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You have 16.0 g of some compound and you perform an experiment to remove all of the oxygen, 11.2 g of iron is left. What is the

Makovka662 [10]

The empirical formula of this compound is $Fe_2O_3$

<h3>Empirical formula </h3>

To calculate the empirical formula of a compound, the value of moles of each element is needed.

As we have the information of the mass value, we will use the molar mass expression, which corresponds to:

$MM_O = 16g/mol\\MM_Fe = 55.8g/mol$

$MM = \frac{m}{mol}$

O

$16 = \frac{4.8}{x}$

$x = 0.3mol$

Fe

$55.8=\frac{11.2}{x}\\x = 0.2$

As the value of the empirical formula must be an integer, simply multiply the two values by a common factor:

$O = 0.3 \times 10 = 3\\Fe = 0.2 \times 10 = 2$

$Fe_2O_3$

So, the empirical formula of this compound is $Fe_2O_3$ .

Learn more about empirical formula: brainly.com/question/1247523

3 0

2 years ago

What is the mass of 1 atom?

VLD [36.1K]

6.7 mass because 1 atom equals 6.3 but if u add 4 it would be 6.7

6 0

2 years ago

When heat move in a gas or liquid, warm matter rise and cold matter sinks, creating currents. which type of heat transfer is thi

ch4aika [34]

I believe it is convection

6 0

2 years ago

Copper, a metal known since ancient times, exists in two stable isotopic forms, 6329Cu (69.09%) and 6529Cu (30.91%). Their atomi

Svetradugi [14.3K]

Answer:

Wt. Avg. Atomic Weight => 63.35457 amu

Explanation:

Given Isotopic %Abundance fractional Wt Avg

At. Mass (amu) abundance contribution

Cu-63 62.93 69.09 0.6909 43.4783

Cu-65 64.9278 20.0668 0.200668 20.0668

Wt Average of all isotopes = ∑Wt Avg Contributions

= 43.4783 amu + 20.0668 amu = 63.35457 amu

7 0

3 years ago

Describe what does happen to the electrons when metal atoms are bonded together.

tankabanditka [31]

Answer: In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions. Metals are shiny.

Explanation: Hope this helped!

4 0

2 years ago