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3 years ago

The element that is a transition metal is

1 answer:

8 0

There are three noteworthy elements in the transition metals family. These elements are iron,cobalt, and nickel, and they are the only elements known to produce a magnetic field.

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what type of heat transfer occurs when a house gets warmer when the curtains covering the windows are open

SashulF [63]

probably radiation. the sun's radiation waves are heating up the windows that are also heating up the house. but idek anymore sorry sister

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3 years ago

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A 100 mL reaction vessel initially contains 2.60×10^-2 moles of NO and 1.30×10^-2 moles of H2. At equilibrium the concentration

Sliva [168]

Answer:

<h2>The equilibrium constant Kc for this reaction is 19.4760</h2>

Explanation:

The volume of vessel used= $100$ ml

Initial moles of NO= $\frac{2.60}{10^2}$ moles

Initial moles of H2= $\frac{1.30}{10^2}$ moles

Concentration of NO at equilibrium= $0.161$ M

$Concentration(in M)=\frac{moles}{volume(in litre)}$

Moles of NO at equilibrium= $0.161(\frac{100}{1000})$

= $\frac{1.61}{10^2}$ moles

2H2 (g) + 2NO(g) <—> 2H2O (g) + N2 (g)

Initial :1.3*10^-2 2.6*10^-2 0 0 moles

Equilibrium:1.3*10^-2 - x 2.6*10^-2-x x x/2 moles

∴ $\frac{2.60}{10^2}-x=\frac{1.61}{10^2}$

⇒ $x=\frac{0.99}{10^2}$

$Kc=\frac{[H2O]^2[N2]}{[H2]^2[NO]^2} (volume of vesselin litre)$

Equilibrium:0.31*10^-2 1.61*10^-2 0.99*10^-2 0.495*10^-2 moles

⇒ $Kc=\frac{(0.0099)^2(0.00495)}{(0.0031)^2(0.0161)^2} (0.1)$

⇒ $Kc=19.4760$

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3 years ago

Use the periodic table to determine the charge of the ions below. Select the correct answer from the drop-down menus. A lithium

dezoksy [38]

Lithium ion has a charge of 1+
Calcium ion has a charge of 2+
Aluminum ion has a charge of 3+
Fluoride has a charge of 1-
Oxide has a charge of 2-

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3 years ago

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What is the molar mass of a compound compared to an element?

Radda [10]

Answer: The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).

Explanation: The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms.

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Here’s the answers I wasn’t asking a question hehe!Subtract the mass of the filter paper (0.27g) from the mass of the paper and

GarryVolchara [31]

Do you still need help with this?

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3 years ago