4) How many grams are there in 7.40 moles of AgNO37

Answers

Answer 1
Answer:

Answer:

1258 grams of AgN03

Explanation:

We calculate the weight of 1 mol of AgN03:

Weight 1 mol AgN03= Weight Ag + Weight N +( Weight 0)x3=108g+ 14g+16gx3=170 g/mol

1 mol----170 g AgN03

7,4mol---x= (7,4 mol x170 g AgN03)/1 mol=1258 g AgN03


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The product of the reaction is MgO. Describe what you observed in the reaction. Then consider the general AB form of a synthesis reaction. Write the chemical reaction, balancing the equation so that there are an equal number of atoms of each type in both the reactants and the product.

Answers

Answer:

2Mg + O₂ ⇒ 2 MgO

Explanation:

When the MgO formation reaction is carried out experimentally, it can be seen that Magnesium a solid that has a metallic luster, when a flame is brought closer so that the oxidation reaction of the metal occurs, it is appreciated that a colored flame is produced white for a few moments (the duration of the flame depends on the initial amount of magnesium) and when the reaction finished, the magnesium became a white solid, opaque and very fragile. This is because Mg reacted with oxygen and magnesium oxide formed, which is the white solid.

Synthesis reactions are those in which two or more reagents combine to obtain a new product compound. The general formula for this type of reaction is:

A + B ⇒ C

In the case of the example of the statement, the reaction form of this synthesis would be:

2Mg + O₂ ⇒ 2 MgO

The equation is matched in such a way that there is the same amount of atoms of each species in both reagents and products, thus respecting the principle of conservation of mass.

Clarification: In the synthesis reaction, oxygen is placed in its molecular form (O₂), because the compound is naturally found, it is a simple substance. Magnesium, on the other hand, is found as a simple substance as atoms.

The reaction between Magnesium and Oxygen produces Magnesium Oxide. The balanced equation is 2Mg + O2 → 2MgO.

In the reaction, Magnesium (Mg) reacts with Oxygen (O) to produce Magnesium Oxide (MgO).

The balanced chemical equation for this synthesis reaction is:

2Mg + O2 → 2MgO

In this equation, there are an equal number of atoms of each type on both sides of the equation, which follows the principle of conservation of mass.

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The law of conversion of mass states that what?

Answers

the law of conservation states that mass in an isolated system is neither created or destroyed by chemical reactions or physical transformation

1.)Which of these is a unit of pressure?I. torr
II. mm of Hg
III. L

I only

I and II

II only

II and III

2.)Decreasing the temperature of a gas will __________.

increase the collision rate between gas particles

decrease the collision rate between gas particles

decrease the amount of gas particles in the gas

not affect the collision rate between gas particles

3.)Which of the following pressures is equal to 2.0 atm?

202.6 Pa

202.6 kPa

202,600 kPa

202,600 Pa

4.)What is the correct calculation when converting 4.1 atmospheres to kilopascals?

5.)Decreasing the temperature of a gas decreases the pressure because __________.

the collision rate between gas particles increases

the collision rate between gas particles decreases

the volume of the gas increases

the amount of gas decreases

6.)Which of these is a unit of pressure?
I. kPa
II. torr
III. g

I only

I and II

II only

II and III

7.)How many millimeters of mercury is 2.64 atmospheres equivalent to?

2.01 x 103 mm Hg

3.47 x 10-3 mm Hg

2.88 x 102 mm Hg

2.64 mm Hg

8.)Which of these quantities are equal to 303,900 Pa? ( multiple answers)

303.9 atm

3.0 atm

44.1 psi

1520 mm Hg

Answers

Answer:

Explanation:

1 ) Which of these is a unit of pressure?

Answer:

Option B = I and II

Torr and mmHg both are units of pressure.

While litter (L) is unit of volume.

Torr:

Torr is the measure of pressure produced by one mmHg equal to the 1/760 of standard pressure used to the pressure of vacuum system.

Millimeter mercury mmHg:

It is the manometric pressure unit. It is defined as, the pressure exerted by column of mercury one millimeter high. it is represented by mmHg.

Torr to mmHg conversion:

Both are equal to each other.

1 torr = 1 mmHg

Torr to atm:

Torr is converted into atm by dividing the torr value 760.

mmHg to atm.

mmHg is converted into atm by dividing the torr value 760.

2) Decreasing the temperature of a gas will....

Answer:

option B = Decrease the collision rate between gas particles

when the temperature of gas is increased the average kinetic energy of gas molecules will increased and gas particles moves fast. Thus because of high velocity gas molecules colloid with each other and also with the wall of container. We can say that collision between gas molecules increased by increasing the temperature. The pressure will also goes to increase.

But when the temperature is decreased the kinetic energy of gas molecules goes to decrease and collision will also decreased because of smaller velocity of gas molecules.

3) Which of the following pressure is equal to 2.0 atm.

Answer:

B) 202.6 KPa

In order to convert the pascal to atm we will divide the given value by 101325.

In order to convert the KPa into atm we will divide the value by 101.325.

A) 202.6 pa

202.6/101325

0.002 atm

B) 202.6 KPa

202.6/101.325

2 atm

C) 202,600 kpa

202,600/101.325

1999.5 atm

D) 202,600 Pa

202,600/101325

1.9995 atm

The option b is correct because 202.6 Kpa is equal to 2.0 atm.

4) What is the correct calculation when converting the 4.1 atm to kilopascal?

Answer:

Kilopascal and atm both are units of pressure. They can be converted into one another.

KPa can be converted into atm by dividing the giving KPa value 101.325.

atm can be converted into KPa by multiplying the given atm value with 101.325.

For example:

4.1 atm × 101.325  kpa/ 1 atm

415.432 atm. kpa / 1atm

415.432 kpa

Kpa to atm:

415.432 kpa/101.325  kpa × 1 atm

4.1 × 1 atm

4.1 atm

5) Decreasing the temperature of gas decreases the pressure because

Answer:

option b= The collision rate between gas particles decreased.

when the temperature of gas is increased the average kinetic energy of gas molecules will increased and gas particles moves fast. Thus because of high velocity gas molecules colloid with each other and also with the wall of container. We can say that collision between gas molecules increased by increasing the temperature. The pressure will also goes to increase.

But when the temperature is decreased the kinetic energy of gas molecules goes to decrease and collision will also decreased because of smaller velocity of gas molecules. Thus slow moving particles exerted low pressure.

Temperature and pressure are also directly related to each other. When temperature is high pressure will also high and when temperature is low pressure will also low.

6) Which of these is a unit of pressure?

KPa

Torr

g

Answer:

option B = I and ii

Explanation:

Kpa and torr both are pressure units.

Gram (g) is the unit of mass.

Torr:

Torr is the measure of pressure produced by one mmHg equal to the 1/760 of standard pressure used to the pressure of vacuum system.

Kilopascal:

The kilopascal is the unit of pressure. It is represented by KPa.

it is the pressure generated by 10 g mass of substance on area of 1 cm².

There are 1000 pascal in one kilopasca.

one atm = 101.325 KPa

one atm = 101325 Pa

7) How many mmHg  is 2.64 atmosphere equivalent to ?

2.01 × 10³ mmHg

3.47 × 10⁻³ mmHg

2.88 × 10² mmHg

2.64 mmHg

Answer:

A) 2.0× 10³ mmHg

Explanation:

Millimeter mercury mmHg:

It is the manometric pressure unit. It is defined as, the pressure exerted by column of mercury one millimeter high. it is represented by mmHg.

mmHg to atm.

mmHg is converted into atm by dividing the torr value 760.

atm to mmHg

atm is converted into mmHg by multiplying the given value with 760.

2.64 atm × 760 mmHg / 1 atm

2006.4 mmHg .atm /1 atm

2.0× 10³ mmHg .atm /1 atm

2.0× 10³ mmHg

8) Which of these quantities are equal to 303900 Pa?

303.9 atm

3.0 atm

44.1 psi

1520 mmHg

Answer:

option b = 3.0 atm

it is almost equal to 303,900 Pa but not exactly. because

3.0 atm = 303975 Pa

Explanation:

A) 1 atm = 101325 Pa

303.9 atm × 101325 Pa / 1 atm

30792667.5 Pa .atm  / 1 atm

30792667.5 Pa

b) 3.0 atm

3.0 atm × 101325 Pa / 1 atm

303975 Pa .atm  / 1 atm

303975 Pa

C) 44.1 Psi

44.1 × 6894.757

304058.8 Pa

D) 1520 mmHg

1520 × 133.322

202650 Pa

Why is mitosis a form of asexual reproduction?

Answers

Asexual reproduction involves mitosis. It could be by a number of different ways, but all of them involve making new cells from the ones that are already there.

Note that mitosis is also valuable for repairing damaged tissue, replacing worn out cells, growing, and developing, not just asexual reproduction.

Asexual reproduction does not occur by meiosis.

Final answer:

Mitosis is a form of asexual reproduction because it allows a single cell to divide and produce two genetically identical daughter cells. There is no exchange of genetic material, making the offspring an exact copy of the parent.

Explanation:

Mitosis is considered a form of asexual reproduction because it enables a single cell to divide and produce two daughter cells that are genetically identical to the parent cell. In asexual reproduction, there is no exchange of genetic material, thus ensuring that the offspring is an exact copy of the parent. This is the main reason why mitosis, with its mechanism of copying and separating chromosomes, is classified as asexual reproduction.

For instance, a bacterium reproduces by mitosis; first, it duplicates its DNA and then divides into two cells. Each of these two cells has exactly the same DNA as the parent bacterium.

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What are some physical properties in a water hat?

Answers

Use Socratic for helps
Physical properties. O; one molecule of water has two hydrogen atoms covalently bonded to a single oxygen atom. Water is a tasteless, odorless liquid at ambient temperature and pressure. Liquid water has weak absorption bands at wavelengths of around 750 nm which cause it to appear to have a blue colour.

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The density of a cork is 0.24 what is the volume of a 240 piece of cork?

Answers

To find the volume of a 240-piece of cork, we need to know the mass or total weight of the cork. The given information only states the density of the cork, which is 0.24, but it does not provide the mass directly.

Density (ρ) is defined as the mass (m) of an object divided by its volume (V):

Density (ρ) = Mass (m) / Volume (V)

Given: Density (ρ) = 0.24 g/cm³ (as 0.24 is equivalent to 0.24 g/cm³ for this case)

Mass (m) = 240 g

We need to rearrange the formula to solve for the volume (V):

Volume (V) = Mass (m) / Density (ρ)

Volume (V) = 240 g / 0.24 g/cm³

Volume (V) = 1000 cm³

So, the volume of the 240 grams of cork is 1000 cubic centimeters (cm³).

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I am going to assume that the volume 0.24 is in g/ml and that its mass 240 is in milligrams.
You first need to convert the milligrams into grams so that the units for mass and density both have grams in them. 240mg equals .240g

you have to divide its mass by the density to get volume.  (.240 g)/(0.24 g/ml)=1ml
I hope this helps.