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4 years ago

MARKING BRAINLIEST!!!Complete a combining ratio of Lithium and Oxygen.

Chemistry

1 answer:

cluponka [151]4 years ago

7 0

Li₂O

Explanation:

Elements or ions exchange their combining powers or their simplest whole number ratio during the formation of a chemical formulae of compounds.

The combining power of lithium is 1

Oxygen is 2

Lithium Oxygen

Combining

power 1 2

Exchange of

valencies 2 1

Molecular formula of the compound gives Li₂O

Learn more:

Molecular formula brainly.com/question/5537295

#learnwithBrainly

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How many grams of ammonia (NH3) are present in 5.0L of a 0.050M Solution?

MissTica

Answer:

Explanation:

NH3 in a liter is 17 x 0.05 = 0.85g

In 5L = 0.85 x 5 = 4.25 = 4.3g

3 0

3 years ago

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Which would be expected to have a higher boiling point t-butyl alcohol or n-butyl alcohol?

patriot [66]

T-butyl alcohol boiling point 82.4*C, 356 K, 180*F
N-butyl alcohol boiling point 117.2*C

4 0

3 years ago

Without looking at the periodic table, identify the group, period, and

kobusy [5.1K]

the group : 2

periode : 6

block = 2

atomic number = 56

<h3>Further explanation </h3>

We can divide the periodic system into several parts:

1. Block s: groups 1 and 2 (having a configuration of 1s-7s) consist of active metals except for H (non-metals) and He (noble gases)

2. Block p: group 13-18 (has a 2p-6p configuration), also called a representative element because it includes metals, non-metals and metalloids

3. Block d: group 3-12 (having the 3d-6d configuration), are transition metal elements

4. Block f: Lanthanides and Actinides (having a 4f-5f configuration), are inner transition elements that are also metal

The element with the electron configuration : [Xe]6s²

The outer shell 6s² :

Electron configuration :

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s² : electron =56

group⇒valence electron ⇒2

period⇒the greatest value of the quantum number n⇒6

The element that is in period 6, and belongs to group 2 and has the atomic number 56 and in the block s

4 0

3 years ago

Give four method of acid preparation and give two reactions to support your answers

gregori [183]

(i) Hydrogen chloride gas is prepared by treating Sodium chloride with concentrated sulphuric acid. The HCl gas is passed through a drying agent to remove moisture where concentrated sulphuric acid plays the role of dehydrating agent as well.

(ii) NaCl+H2 SO4 →NaHSO 4 +HCl(g)

Hope it helps :)

5 0

3 years ago

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A rigid cylinder with a movable piston contains a sample of gas. At 300. K, this sample has a pressure of 240. Kilopascals and a

iren [92.7K]

Answer:

The volume of this sample when the temperature is changed to 150 K and the pressure is changed to 160 kPa is 52.5 mL.

Explanation:

Boyle's law says that: "The volume occupied by a certain gaseous mass at constant temperature is inversely proportional to pressure" and is expressed mathematically as:

P * V = k

where k is a constant.

Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is maintained at a constant pressure, by means of a constant of proportionality that is applied directly. So Charles's law is a law that mathematically says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

$\frac{V}{T}=k$

Gay-Lussac's law states that the pressure of a fixed volume of a gas is directly proportional to its temperature. In other words, if the volume of a certain quantity of ideal gas remains constant, the quotient between pressure and temperature remains constant:

$\frac{P}{T}=k$