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Anni [7]
3 years ago
15

Which metal will displace nickel in a compound? A. Tin B. Arsenic C. Zinc D. Platinum

Chemistry
2 answers:
Sophie [7]3 years ago
8 0
Which metal will displace nickel in a compound? it zink is the  metal
12345 [234]3 years ago
8 0

c. zinc hope  this helps you

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How many molecules of nitrogen monoxide are in a 22.5 gram sample?
poizon [28]
Okay, so you need to start by finding the molar mass (grams in one mole) of nitrogen monoxide (NO).
N=14g
O=16g
So we know that NO has a molar mass of 30 grams, then just divide your given mass of 22.5 grams by the molar mass of 30 grams to find the number of molecules in your sample. The answer should be .75 molecules. Hope this helps!
3 0
3 years ago
HALP PLZ 50 points brainlest and thanks if u halp
Novay_Z [31]
I Would Say The Answer Is C.
8 0
3 years ago
Read 2 more answers
The combustion reaction for methane is shown below:
horrorfan [7]

Answer:

P =  14.1 atm    

Explanation:

Given data:

Mass of methane = 64 g

pressure exerted by water vapors = ?

Volume of engine = 24.0 L

Temperature = 515 K

Solution:

Chemical equation:

CH₄ + 2O₂      →      CO₂ + 2H₂O + energy

Number of moles of methane:

Number of moles = mass / molar mass

number of moles = 64 g/ 16 g/mol

Number of moles = 4 mol

Now we will compare the moles of water vapors and methane.

              CH₄          :            H₂O  

                 1            :             2

                 4            :         2/1×4 = 8 mol

Pressure of water vapors:

PV = nRT

R = general gas constant = 0.0821 atm.L/mol.K

P = 8 mol × 0.0821 atm.L/mol.K× 515 K / 24.0 L

P = 338.25 atm.L/ /  24.0 L

P =  14.1 atm      

4 0
2 years ago
What ions exist in acid solutions
Iteru [2.4K]
Hydrogen Ions exist in acid solutions.
5 0
3 years ago
Según la ecuación, HNO3 + H2S ----------- NO + S+ H2O el elemento que se oxida es
Serhud [2]

Answer:

HNO3 + H2S = H2O + NO + S - Chemical Equation Balancer. Balanced Chemical Equation. 2 HNO 3 + 3 H 2 S → 4 H 2 O + 2 NO + 3 S. Reaction Information. Nitric Acid + Hydrogen Sulfide = Water + Nitric Oxide (radical) + Sulfur . Reactants.

Explanation:

5 0
3 years ago
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