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Illusion [34]
3 years ago
10

The two elements discovered by Marie Curie are _____ and _____. uranium curium radium polonium

Chemistry
2 answers:
denpristay [2]3 years ago
5 0
Marie Curie discovered polonium and radium. Hope this helps:))) Please, mark Brainliest!
Savatey [412]3 years ago
3 0
Marie Curie discovered polonium and Radium.
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Rolls of foil are 302 mm wide and 0.018 mm thick. (The density of foil is 2.7 g/cm3 .)
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Answer:

The length of foil will be 8107.81 cm or 81.7081 m.

Explanation:

Given data:

Width of roll of foil = 302 mm

Height or thickness = 0.018 mm

Density of foil = 2.7 g/cm³

Mass of foil = 1.19 Kg

Length of foil = ?

Solution:

d = m/ v

v = length (l) × width (w) × height (h)

First of we will convert the Kg into gram and mm into cm.

one Kg = 1000 g

1.19 × 1000 = 1190 g

one cm = 10 mm

302 / 10 = 30.2 cm

0.018 / 10 =  0.0018 cm

Now we will put the values in formula:

d = m/ l× h× w

l = m / d × h× w

l = 1190 g / 2.7 g/cm³× 30.2 cm × 0.0018 cm

l = 1190 g/ 0.146772 g/cm

l = 8107.81 cm or 81.7081 m

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How many moles of oxygen would be needed to produce 84 moles of sulfur trioxide according to the following balanced chemical equ
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Answer:

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