All categories

3 years ago

Convert the pressure 525.4 torr to kPa.

Chemistry

2 answers:

Virty [35]3 years ago

8 0

Answer:

A. 70.0 kpa

Explanation:

Given

Pressure = 525.4 torr

Required

Convert to kPa

From standard unit of conversion;

$1\ torr = 0.133\ kPa$

Multiply both sides by 525.4

$525.4 * 1\ torr = 525.4 * 0.133\ kpa$

$525.4\ torr = 70.047572\ kpa$

$525.4\ torr = 70.0\ kpa$ (Approximated)

From the list of given options, option A is the closest answer after 525.4 torr is converted to its kpa equivalent

g100num [7]3 years ago

3 0

The answer is 70.0kPa

You might be interested in

Select the correct answer. If the EMF produced in a wire is 0.88 volts and the wire moves perpendicular to a magnetic field of s

serious [3.7K]

Given:

EMF = 0.88 V

Strength of magnetic field, B = 0.075 N/A-m

Velocity, v = 4.20 m/s

To determine:

The length of wire, L

Explanation:

The EMF is related to strength of the magnetic field B as:

EMF = L*B*v

L = EMF/B*v = 0.88/0.075*4.20 = 2.79 m

Ans: The length of the wire is around 2.8 m

3 0

3 years ago

What do we call water vapor in the air

vlabodo [156]

It is called absolute humidity.

8 0

4 years ago

Read 2 more answers

Determine the theoretical yield of HCl if 60.0 g of BC13 and 37.5 g of H20 are reacted according to the following balanced react

Pie

Answer : The theoretical yield of HCl is, 56.1735 grams

Explanation : Given,

Mass of $BCl_3$ = 60 g

Mass of $H_2O$ = 37.5 g

Molar mass of $BCl_3$ = 117 g/mole

Molar mass of $H_2O$ = 18 g/mole

Molar mass of $HCl$ = 36.5 g/mole

First we have to calculate the moles of $BCl_3$ and $H_2O$ .

$\text{Moles of }BCl_3=\frac{\text{Mass of }BCl_3}{\text{Molar mass of }BCl_3}=\frac{60g}{117g/mole}=0.513moles$

$\text{Moles of }H_2O=\frac{\text{Mass of }H_2O}{\text{Molar mass of }H_2O}=\frac{37.5g}{18g/mole}=2.083moles$

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

$BCl_3(g)+3H_2O(l)\rightarrow H_3BO_3(s)+3HCl(g)$

From the balanced reaction we conclude that

As, 1 mole of $BCl_3$ react with 3 mole of $H_2O$

So, 0.513 moles of $BCl_3$ react with $3\times 0.513=1.539$ moles of $H_2O$

From this we conclude that, $H_2O$ is an excess reagent because the given moles are greater than the required moles and $BCl_3$ is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of $HCl$ .

As, 1 mole of $BCl_3$ react to give 3 moles of $HCl$

So, 0.513 moles of $BCl_3$ react to give $3\times 0.513=1.539$ moles of $HCl$

Now we have to calculate the mass of $HCl$ .

$\text{Mass of }HCl=\text{Moles of }HCl\times \text{Molar mass of }HCl$

$\text{Mass of }HCl=(1.539mole)\times (36.5g/mole)=56.1735g$

Therefore, the theoretical yield of HCl is, 56.1735 grams

7 0

3 years ago

Describe what it would be like to be an atom

Bond [772]

Explanation:

An atom consists of two regions. The first is the tiny atomic nucleus, which is in the center of the atom and contains positively charged particles called protons and neutral, uncharged, particles called neutrons. ... Most atoms contain all three of these types of subatomic particles—protons, electrons, and neutrons.

3 0

3 years ago

The electrons in the outermost energy level of an atom that influence how an element will react with other substances

Darya [45]

valence electrons is our answer cuz i am good at chemstry

6 0

3 years ago