3 years ago

Write a balanced chemical equation for the reaction that occurs when calcium metal undergoes a combination reaction with O2(g)?

Chemistry

1 answer:

ivann1987 [24]3 years ago

8 0

When calcium joins with calcium its follows the following equation:

2Ca + O2 = 2CaO

hope that helps

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Alekssandra [29.7K]

Answer:

500

Explanation:

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2 years ago

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stellarik [79]

D an average train goes 300 km/h or 190-220 mph

5 0

3 years ago

Which half-reaction equation represents the

erica [24]

The reduction reaction is the gain of electrons while oxidation reaction is the loss of electrons. For potassium ion(K+), the reaction should be K+ + e- ==> K. So the answer is (1).

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3 years ago

Read 2 more answers

Plz help studying for final I think its D but not sure

balandron [24]

Yes it is option D
simply if 1 mole of H2SO4 require 2 moles of NaCN, i.e. the double amount. so 3.6 moles will require 7.2 moles of NaCN

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3 years ago

4) Ethanol has a density of 0.8 g/cm3. <br> What is the mass of 225 cm3 of ethanol

AveGali [126]

Answer:

$\huge\boxed{\sf m = 180\ g}$

Explanation:

<u>Given:</u>

Density = ρ = 0.8 g/cm³

Volume = V = 225 cm³

<u>Required:</u>

Mass = m = ?

<u>Formula:</u>

m = ρV

<u>Solution:</u>

m = (0.8)(225)

m = 180 g

$\rule[225]{225}{2}$

Hope this helped!

<h2>~AnonymousHelper1807</h2>

7 0

3 years ago