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2 years ago

A compound's molecular formula must always be different than the compound's empirical formula. TRUE FALSE

Chemistry

1 answer:

Juli2301 [7.4K]2 years ago

5 0

Answer: False

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

Example: $CH_4$ has similar molecular formula and empirical formula as the elements are already present in simplest of the ratios.

$C_2H_2$ has molecular formula of $C_2H_2$ but $CH$ as the empirical formula.

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Write the formulas for the following compounds: (a) rubidium nitrite, (b) potassium sulfide, (c) sodium hydrogen sulfide, (d) ma

choli [55]

Answer:

All are having different valent cation and anion like mono,di and trivalent polyatomic ions .

A. RbNO3

B. K2S

C. NaHS

D. Mg3(PO4)2 formed by divalent Mg+2 and trivalent PO43-

E. CaHPO4

F. PbCO3 , lead is in Pb+2 form

G. SnF2

H. (NH4)2SO4

I. AgClO4

J. BCl3

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3 years ago

Help me fill in the blanks

Studentka2010 [4]

First blank -Same
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3 years ago

A solution of hydrochloric acid (HCl, 25.00 mL) was titrated to completion with 34.55 mL of 0.1020 M sodium hydroxide. What was

kati45 [8]

Answer:

0.1410 M

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

The mole ratio of the acid, HCl (nA) = 1

The mole ratio of the base, NaOH (nB) = 1

Next, the data obtained from the question. This include:

Volume of acid, HCl (Va) = 25 mL

Volume of base, NaOH (Vb) = 34.55 mL

Concentration of base, NaOH (Cb) = 0.1020 M

Concentration of acid, HCl (Ca) =?

CaVa / CbVb = nA/nB

Ca × 25 / 0.1020 × 34.55 = 1/1

Ca × 25 / 3.5241 = 1/1

Cross multiply

Ca × 25 = 3.5241 × 1

Ca × 25 = 3.5241

Divide both side by 25

Ca = 3.5241 / 25

Ca = 0.1410 M

Therefore, the concentration of the acid, HCl is 0.1410 M

3 0

3 years ago

Complete the table to summarize the properties of the different subatomic particles. Type in your answers.

Aloiza [94]

<h2>Complete the table to summarize the properties of the different subatomic particles. </h2>

Explanation:

Atom

It is a smallest particle which cant exist independently.

According To Dalton, atom was indivisible but later on, it was proved that atom can be subdivided into sub atomic particles called electron, proton & neutron.

These subatomic particles have marked properties .

Proton

It was discovered by E.Goldstein .
It is positively charged particle
It is present in nucleus .
Its mass is equal to 1.6726219 × 10⁻²⁷ kilograms

Neutron

It was discovered by E.chadwick .
It is neutral
It is present inside the nucleus .
It's mass is equal to 1.674927471×10⁻²⁷ kg

Electron

It was discovered by J.J Thomson .
It has negative charge .
It's mass is equal to 9.10938356 × 10⁻³¹ kilograms
It is present outside the nucleus in shells .

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2 years ago

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A single compound breaks apart to form two or more elements or compounds

il63 [147K]

Answer:

I think so elements

Explanation:

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3 years ago

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