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2 years ago

What type of circuit is illustrated?

Chemistry

2 answers:

Ber [7]2 years ago

5 0

I believe it's B: series circuit

good luck

ycow [4]2 years ago

3 0

Answer : the correct option is, (b) series circuit

Explanation :

Parallel circuit : In this circuit, the potential across each of the components are same but the current flow in the circuit is equal to the sum of the current flow of each components.

Series circuit : In this circuit, the current flow each of the components are same but the potential across the circuit is equal to the sum of the potential of each components.

Open circuit : In this circuit, there will be no current flow that means the wires are cut off but in this circuit there will be some voltage.

Short circuit : When the live wire comes in the contact with the neutral wire, the short, this is the condition of the short circuit.

Hence, the given circuit is a type of of series circuit.

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2. Calculate the mass of 3.47x1023 gold atoms.

lapo4ka [179]

3.47 x $10^{23}$ atoms of gold have mass of 113.44 grams.

Explanation:

Data given:

number of atoms of gold = 3.47 x $10^{23}$

mass of the gold in given number of atoms = ?

atomic mass of gold =196.96 grams/mole

Avagadro's number = 6.022 X $10^{23}$

from the relation,

1 mole of element contains 6.022 x $10^{23}$ atoms.

so no of moles of gold given = $\frac{3.47 X 10^{23} }{6.022 X 10^{23} }$

0.57 moles of gold.

from the relation:

number of moles = $\frac{mass}{atomic mass of 1 mole}$

rearranging the equation,

mass = number of moles x atomic mass

mass = 0.57 x 196.96

mass = 113.44 grams

thus, 3.47 x $10^{23}$ atoms of gold have mass of 113.44 grams

3 0

2 years ago

Which substance in the table below has the strongest intermolecular forces

tatiyna

Answer : Option A) HF.

Explanation : Assuming the complete question as per the attachment.

H-F bonds are formed because of hydrogen bonding between H atom and F atom and is considered to be strongest amongst the rest other options given.

As given in the table it is clear that the molar mass of HF molecule is the lowest. It shows that, when dispersion increases in the molecule molecular weight also increases.

7 0

2 years ago

Read 2 more answers

Assinale a alternativa incorreta. *

MakcuM [25]

Answer:

The incorrect choice is the last one:

In the Leucipo and Democritus atomic model, electrons had negative charges.

Explanation:

The translation of the question is:

Choose the incorrect statement. *

Matter is everything that has mass and occupies volume.

Mass and weight are different quantities. Mass is a measure of how much matter an object has, and weight is a measure of the gravitational pull force suffered by the object.

Dalton's atomic model has similarities to the atomic model described by Leucipo and Democritus.

Dalton thought that atoms of the same element could not combine, as they developed mutual repulsion.

In the Leucipo and Democritus atomic model, electrons had negative charges.

<h2>Solution</h2>

The last statement is false because Leucipo and Democritus thought that the atom was an indivisible particle. This is, they did not think there were subatomic particles, such as electrons. Furthermore, the idea of a particle with a negative charge was developed much time (centuries) later.

As for the other statements:

Matter is everything that has mass and occupies volume: this is the current definition of matter; for instance, wood, air, atoms, have mass and occupy volume. Thougths, feelings do not have either mass or occupy a volume, they are not matter.

Mass and weight are different quantities. Mass is a measure of how much matter an object has, and weight is a measure of the gravitational pull force suffered by the object. Indeed, the mass is determined by the number of atoms of the substance, but weight is the force of attraction from Earth (or other planet, if the object is in other planet). Mass does not change with the location; weight does.

Dalton's atomic model has similarities to the atomic model described by Leucipo and Democritus: sure. This is a hystorical question. Leucippus and Democritus were two Greek phylosophers who believed that the matter was formed by tiny solid particles, the atom.

Dalton thought that atoms of the same element could not combine, as they developed mutual repulsion. In the times of Dalton, when he developed the law of multiple proportions, atoms of a same kind were thought to repel each other.

3 0

3 years ago

Write the Iconic Bond to Metals

Nutka1998 [239]

Answer: The ionic compound formed is magnesium chloride having formula $MgCl_2$

Explanation:

Ionic compound is defined as the compound 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.

Magnesium is the 12th element of the periodic table having electronic configuration of $1s^22s^22p^63s^2$

This element will loose 2 electrons to form $Mg^{2+}$ ion

Chlorine is the 17th element of the periodic table having electronic configuration of $1s^22s^22p^63s^23p^5$

This element will gain 1 electron to form $Cl^{-}$ ion

So, for every 1 atom of magnesium, 2 atoms of chlorine are required. Thus, the chemical formula becomes $MgCl_2$

Hence, the ionic compound formed is magnesium chloride having formula $MgCl_2$

6 0

2 years ago

How is volume calculated given mass and density

Ymorist [56]

Answer:

volume is equal to the mass divided by the density (V = M/d).

4 0

1 year ago

Read 2 more answers