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Anika [276]
3 years ago
9

How many grams are in 6.53 moles of Pb

Chemistry
1 answer:
dezoksy [38]3 years ago
7 0
Mr: 207.2
m=n×Mr= 6.53×207.2= 1353.02g
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What is the purpose of finding oxidation states in the half-reaction method for balancing equations?
vazorg [7]

Answer:

B. To Identify the half reactions for the equation

4 0
3 years ago
A hot air balloon can have a volume of 2950 cubic meters (2.95 ✕ 106 liters) and operate at temperatures up to 250°F (121°C). As
TiliK225 [7]

Answer:

2.64 × 10⁶ g

Explanation:

We can find the mass of air using the ideal gas equation.

P.V=n.R.T=\frac{m}{M} .R.T

where,

P is the pressure (P = 1.00 atm)

V is the volume (V = 2.95 × 10⁶ L)

n is the number of moles

R is the ideal gas constant (0.08206atm.L/mol.K)

T is the absolute temperature (121°C + 273 = 394 K)

m is the mass

M is the molar mass (28.09 g/mol)

m=\frac{P.V.M}{R.T} =\frac{1.00atm \times 2.95 \times 10^{6} L \times 28.97g/mol}{(0.08206atm.L/mol.K) \times 394 K } =2.64 \times 10^{6} g

7 0
3 years ago
The formation of a gaseous product is usually indicated by a/an______________ in a chemical reaction.
Harman [31]

Answer: The formation of a gaseous product is indicated by an UPWARD ARROW in a chemical reaction.

Explanation:

A chemical reaction is defined as the process whereby chemical bonds between atoms of

substances known as reactants are either formed or broken leading to the formation of products. New substances are usually formed during a chemical reaction. The following are features of chemical reaction:

--> Evolution of gas

--> Formation of a precipitate

--> Change in color

--> Change in temperature

--> Change in state and

--> Formation of new substances.

Some chemical reactions takes place with the evolution of gas. This can be seen in the reaction of Zinc metal with hydrochloric acid. Hydrogen gas is EVOLVED with the formation of zinc chloride.

UPWARD ARROW in a chemical reaction indicates the evolution of a gas. It appears only on the product side and is written next to the gaseous product.

7 0
3 years ago
204 g of Thallium & 35 g of chlorine?
r-ruslan [8.4K]
204Tl, syn, 3.78 y, β · Pb · ε · Hg. 205Tl, 70.5%, stable. Category: Thallium · view · talk · edit. | references. Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray ... The radioisotope thallium ...
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3 years ago
Under which circumstances are kp and kc equal for the reaction aa(g)+bb(g)⇌cc(g)+dd(g)?
slava [35]

Answer:

When the no. of moles of reactant gases (a + b) = the no. of moles of product gases (c + d).

Explanation:

  • The relation between Kp and Kc is:

Kp = Kc(RT)∧Δn.

  • So, Kp = Kc, when Δn = zero.
  • Δn is the difference between the no. of gas molecules in the products side and that in the reactants side.
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3 years ago
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