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2 years ago

the temperature of gas is raised by 100 deggres to 200 deggres. what happens to the volume of the gas

Chemistry

1 answer:

solniwko [45]2 years ago

7 0

Answer:

Increases by 100 Pa

Explanation:

According to The Ideal Gas Equation,

the temperature of the gas is directly proportional to the volume of the gas present in it
If the temperature rises from 100 K to 200 K, then the volume will increase by 100 Pa (standard unit of Pressure)

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Elemental analysis of caffeine yields the following results: 49.49% C, 5.15% H, 28.87% N, and the remainder is O. What is the mo

vova2212 [387]

Answer:

The answer to your question is C₄H₅N₂O

Explanation:

Process

1.- Calculate the percent of oxygen in the sample

Percent of oxygen = 100 - 49.49 - 5.15 - 28.87

Percent of oxygen = 16.49 %

2.- Write the percents as grams

C = 49.49 g

H = 5.15 g

N = 28.87 g

O = 16.47 g

3.- Convert the grams to moles

C 12 g ------------------- 1 mol

49.49 g ---------------- x

x = (49.49 x 1) 12

x = 4.12 moles

H 1 g ------------------- 1 mol

5.15 g ---------------- x

x = (5.15 x 1)/ 1

x = 5.15 moles

N 14 g --------------- 1 mol

28.87 g ---------- x

x = (28.87 x 1) / 14

x = 2 mol

O 16 g ---------------- 1 mol

16.49 g ----------- x

x = (16.49 x 1) / 16

x = 1.03 moles

4.- Divide by the lowest number of moles

C 4.12 / 1.03 = 4

H 5.15 / 1.03 = 5

N 2 / 1.03 = 1.9 ≈ 2

O 1.03 / 1.03 = 1

5.- Write the empirical formula

C₄H₅N₂O

6 0

4 years ago

Based on the graph, which of these statements is most likely correct about the periods 1800 to 1850 and 1900 to 1950?

Marianna [84]

Based on the graph, the statement that is most likely correct about the periods 1800 to 1850 and 1900 to 1950 is that there was decrease in global temperatures. The answer is letter B. The rest of the choices does not fit tot the description of the graph.

8 0

3 years ago

What mass of magnisium bromide is formed when 1.00 g of Mg + br

ella [17]

Mass of Magnesium bromide : 5.76 g

<h3>Further explanation</h3>

Complete question

What mass of Magnesium bromide is formed when 1.00 g of magnesium reacts with 5.00 g of bromine?

Reaction

$\tt Mg+Br_2\rightarrow MgBr_2$

mol Mg

$\tt \dfrac{1}{24}=0.042$

mol Br₂

$\tt \dfrac{5}{160}=0.0313$

Limiting reactants : Br₂(smaller)

mol MgBr₂ = mol Br₂=0.0313

mass MgBr₂ :

$\tt 0.0313\times 184,113 =5.76~g$

5 0

3 years ago

Are metal and non-metal elements typically ionically bonded? Explain.

victus00 [196]

Answer: Yes, metals and non-metals forms ionic bonds.

Explanation:

Ionic bond is defined as the bond which is formed by complete transfer of electrons from one atom to another atom.

The atom which looses the electron is known as electropositive atom and the atom which gains the electron is known as electronegative atom. This bond is usually formed between a metal and a non-metal.

For Example: Formation of sodium chloride

Sodium is a metal and is the 11th element of periodic table having electronic configuration of $[Ne]3s^1$

To form $Na^{+}$ ion, this element will loose 1 electron.

Chlorine is a non-metal and is the 17th element of periodic table having electronic configuration of $[Ne]3s^23p^5$ .

To form $Cl^{-}$ ion, this element will gain 1 electron.

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

So, the compound formed between sodium and chlorine atom is NaCl

Hence, metals and non-metals forms ionic bonds.

8 0

3 years ago

Do you think any significant discoveries have been made from errors? Can you describe one?

nasty-shy [4]

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Mauve.

6 0

3 years ago