Write the formula for the following compounds.

The flow rate of the IV pump should be 17.06mL/hr.

1st) We need to calculate the patient's weight knowing that 1 lb is equal to 0.45 kg:

The patient weighs 106.65 kg.

2nd) If the patient needs a drip at 8.0 units per kg of body weight, we have to calculate the units for the patient:

So, the patient needs 853.2 units per hour.

3rd) To calculate the flow rate of the IV pump, we need to know the mL equivalent to 853.2 units:

So, the flow rate of the IV pump should be 17.06mL/hr.

The mid-ocean ridge would be the longest and largest mountainous region. With a circumference of 40,389 miles, it genuinely is a world landmark.

The water covers around 90% of the mid-ocean ridge system. The world is crisscrossed by a system of mountains as well as valleys that resembles the seams in a baseball. Tectonic plate movement on Earth is what creates it.

Mountain ranges like the Rockies had also often grown and fallen over the evolution of our planet. Whenever two continents clash, mountains are created. Due to their identical weight as well as diameter, neither plate would bury beneath the other.

In a process known as plate tectonics, sections of such Earth's mantle, known as plates, collide with one another as well as buckle up like such a rear bumper in a frontal collision to build the world's largest mountain ranges.

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In order to solve this question, we will be using the Gay-Lussac's gas Law, which is an experimental gas law that shows the relationship between temperature and pressure for a gas, the formula is:

P1/T1 = P2/T2

We have:

P1 = 1.00 atm

T1 = 20.0°C, but we need it Kelvin, therefore, 293 K

P2 = ?

T2 = 30°C, or 303 K

Now we add these values into the formula:

1/293 = P2/303

P2 = 1.03 atm is the new pressure

Answer

C. The increased kinetic energy causes the particles to move faster, causing more collisions.

Explanation

An increased temperature typically causes a reaction to occur faster by raising the average kinetic energy of the reactant molecules.

Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision.

The correct answer is option C. The increased kinetic energy causes the particles to move faster, causing more collisions.

Answer:

The factor of change is 1/4.

Explanation:

Since in this case we have a constant temperature, the changes in the pressure will affect the volume like the Boyle's Law formula explains:

To find the change of the sample volume, let's replace the initial pressure (P1) with A, and let's increase the pressure (P2) 4x:

So, the factor of change is 1/4.

Explanation:

We have to find the bonds that are broken and formed during the following reaction.

__ C₂H₄ + __ O₂ ---> __ CO₂ + __ H₂O

First we have to balance the reaction. To balance a combustion reaction we usually start balancing the atoms of C. We have two on the left and 1 on the right side of the equation. So the coefficient for CO₂ must be 2.

__ C₂H₄ + __ O₂ ---> 2 CO₂ + __ H₂O

Then we balance the H atoms by changing the coefficient for water. We have 4 atoms of H on the left and two on the right. The coefficient must be 2.

__ C₂H₄ + __ O₂ ---> 2 CO₂ + 2 H₂O

And finally we can balance the O atoms by changing the coefficient for O₂. We have 6 O atoms on the right side, so the coefficient for O₂ must be 3. The balanced equation is:

C₂H₄ + 3 O₂ ---> 2 CO₂ + 2 H₂O

Now to determine the bonds that have to be broken we have to pay attention to the Lewis structures of the reactants. They are:

We have to break 4 C-H bond, 1 C=C and 3 O=O bond (since the coefficient for oxygen gas is 3).

The bonds that we have to form are:

We have to form 4 C=O bonds (since the coefficient for carbon dioxide is 2), and 4 O-H bonds (since the coefficient for water gas is 2).

Answer: Four C-H, one C=C and three O=O bond need to break up. Four C=O and 4 O-H bonds need to form. (second option)

Explanation:

When using public transport vehicles instead of private cars, we emit less pollution. For example in a bus more than 20 people travel, so the pollution per person is lower.

When we increase speed we usually consume more fuel, so avoiding accelerating rapidly we also reduce pollution.

Answer:

a) public transport vehicles.

b) accelerating rapidly.

To balance an equation with the oxidation numbered method we must write the oxidation states of the elements that participate in the reaction.

Once we have the oxidation states we must identify how they change from reactants to products. Thus we identify which are oxidized and which are reduced. If its oxidation state increases it is because the element is oxidized, if it decreases it will have been reduced.

We see that the elements that change their oxidation state are silver, Ag and Oxygen. We have that:

Explanation: Collagative properties are characteristics of a solution that is dependent on the ratio of solute particles to to solvent particles.

Answer: D) Melting point acceleration.

5a) Propyne is a member of the alkyne group with the formula C3H4. The compound consists of 3 carbon atoms and 4 hydrogen atoms. The expanded form of the compound is as shown below;

b) For the skeletal structure of 2, 2 - dimethyl butane, the carbon and hydrogen atoms are hidden. The structure will only be written in form of lines as shown:

c) The molecular formula for benzene is C6H6. It is cyclic in nature with a total of 6 carbon atoms and 6 hydrogen atoms. The structure of the atom is as shown below;

d) Heptane is an alkane compound with the molecular formula C7H16. The condensed formula do not contain any lines or angles. They are written in term of their hydrogen and carbon compounds.

In this stoichiometry question, we have the following reaction:

4 Al + 3 N2 -> 2 Al2N3

We have:

2.5 grams of N2

We want to know how much Al we need in order to react with 2.5 grams of N2, and in order to do that, we need to find out how many moles of N2 we have in 2.5 grams, we will be using its molar mass, 28g/mol to do it:

28g = 1 mol

2.5g = x moles

28x = 2.5

x = 2.5/28

x = 0.089 moles of N2 in 2.5 grams

Now according to the molar ratio, we have 4 moles of Al for every 3 moles of N2, therefore, if we have 0.089 moles of N2:

4 Al = 3 N2

x Al = 0.089 N2

x = 0.119 moles of Al

Now we can find the mass needed, using the number of moles, 0.119 moles, and also the molar mass, 27g/mol:

27g = 1 mol

x grams = 0.119 moles of Al

x = 3.2 grams of Al is required

Answer is 3.2 grams

According to these options presented here, we can see that:

Kelvin is for temperature

Milliliters are for volume

Seconds is for time

So, the answer for mass is grams (g). Therefore, we measure the mass in grams.

Answer: grams (g)

Explanation

Given:

i = 2

boiling point of water = 100 'C

KCl boiling point = 102.5 'C

Required: Molality (m) of the solution

Solution

DT = i x Kb x m

DT = 102.5-100 = 2.5 'C

DT = i x Kb x m

2.5 = 2 x 0.512 x m

2.5 = 1.024m

molality = 2.44 m

Answer

Molality = 2.44 m

Answer:

Explanation:

Here, we want to get the final pressure

From the pressure law, volume and temperature are directly proportinal

Mathematically:

Where:

P1 is the initial pressure which is 965 torr

P2 is ?

T1 is the initial temperature which we convert to Kelvin by adding 273 K(55 + 273 = 328 k

T2 is the final temperature which is 24 + 273 = 297 K

Substituting the values, we have it that:

Now, we convert this to mmHg

Mathematically, 1 torr = 1 mmHg

We have the final pressure as 873.80 mmHg

We can find the number of moles of a compound based on their number of atoms using Avogadro's number which says that there are 6.022 x 10^(23) atoms in 1 mol.

The answer is that there are 69744.27 moles of zinc in 4.2 x 10^(28) atoms of zinc.

Answer:

Lifting, instability, and moist/humid air

Explanation:

The water is released from the air, forming storm clouds, while humid air is flowing upward at a zone of low pressure over warm ocean water. The air in a hurricane rotates as it rises.

Physical changes are changes in which there are no changes in the internal structure of substances. When there is a chemical change a chemical reaction is involved and the internal structure of the substance changes.

Of the four options that give us the first two: The oxidation of steel and burned paper represents an oxidation and combustion reaction respectively, so they correspond to chemical changes.

The second two options are phase changes, there is no chemical reaction and therefore the internal structure of the substances does not change. So the options to select will be:

Answer:

Acetone evaporating

Ice melting

Answer:

Phosphate ion only

Explanation:

Here, we want to get the polyatomic ions with a charge of -3

What we have to do here is to write the polyatomic ions and their formula

We have this as follows:

From the above, the polyatomic ions with a charge of -3 is the Phosphate ion only

Explanation:

Electronegativity corresponds to the ability of the nucleus of an atom to attract the electrons involved in a chemical bond.

Elements belonging to the same period (same row) of the Periodic Table, we will see that electronegativity increases from left to right.

Elements belonging to the same group (same column), electronegativity increases from bottom to top.

The element among sulfur, nitrogen, silicon and chlorine that has the higher eletronegativity is chlorine.

Answer: d. chlorine

Compared to the normal freezing and boiling point of water, adding sugar to water will result in:

D. Lower freezing point and higher boiling point.

The chosen answer is the correct one.

This is explained as follows:

When we add sugar to water we form a solution, water molecules sorroud sugar molecules interacting with them electrostatically, this results in less interaction between water molecules and a lower amount of energy needed for them to maintain their freedom, so they will stay in liquid state at lower temperatures.

On the other hand, when we take the solution to its boiling point we will see that it is higher than that of pure water. This happens because the interaction between water and sugar molecules makes it harder for water molecules to escape the liquid phase, increasing the boiling temperature.

Given the balanced equation :

• 2,NaOH + H2S04 → Na2S04 + ,2,H20

2 : 1 :1 :2

We can see that 2 moles of NaOH produces 2 moles of H20

Answer:

12 liters is equal to 0.075 barrels.

Explanation:

To convert liters into barrels, it is necessary to use the following conversions:

- 1 barrel = 42 gallons

- 1 liter = 0.264 gallons

We have to write each conversion as a quotient:

We must write each conversion in a way that the liters cancel out, then the gallons cancel out in order to obtain the result in barrels.

So, 12 liters is equal to 0.075 barrels.

The phase diagram of a substance is given below. This substance is a solid  at 10 °C and 1 atm.

When a material switches from one state of matter to another, a phase transition takes place. Matter exists in three basic states: liquid, solid, and gas. The many phases of a material are shown on a phase diagram using numerous variables, most frequently temperature and pressure. The figure may be used to illustrate how altering these factors impacts a substance's state of matter.

The fusion (melting or freezing) curve, which depicts the change from a liquid to a solid state. The curve that depicts the change from a gaseous to a liquid state is called the vaporization (or condensation) curve. The sublimation (or deposition) curve depicts the change from a gaseous to a solid state.

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To answer this question, we have to use calcium oxide molar mass. It is 56.1g/mol, which means that 1 mol of this compound is 56.1 grams. Use this to find how many moles are there in 5.45grams of calcium oxide:

It means that for this mass, there are 0.097 moles of CaO.

Identify Bo compounds as the quantitatively by the green coloration

The presence of boron compound can be detected quantitatively by green coloration they impart to the flame of an ordinary laboratory or bunsen burner and also boron can be identified by using spectrophotometric and colorimetric method and the chemical properties of boron are more similar to carbon and silicon than element of its own group although boron is the more electron dificient

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a) To get the number of moles of CO2 that are produced for each mole of C3H8 used, we will use the stochiometry ratio from the balanced chemical reaction.

The balanced chemical reaction that resulted from the combustion of propane gas is given as:

From the balanced reaction, you can see based on stoichiometry that for each mole of propane that reacted, 3 moles of CO2 was produced.

b) If you start with 362 grams of C3H8, the number of moles of propane will be expressed according to the formula:

Given the following parameters:

Mass of propane gas = 362 grams

Molar mass of propane = (3*12) + (1*8) = 36 + 8 = 44g/mol

From stoichiometry, you can see that 1 mole of C3H8 produces 4 moles of H2O, hence the moles of H2O that will be produced is given as:

Get the mass of H2O that was produced using the formula:

Therefore if you start with 362 grams of C3H8, 592.38grams of H2O will be produced

A) To find the number of moles of a compound, we can use the Molarity formula, which tells us that molarity is equal to the number of moles divided by the volume in liters.

M = n/V

Now in our question we have a few informations, the molarity and the volume

0.135M = n/0.04L

Therefore the number of moles will be:

n = 0.135M * 0.04L

n = 0.0054 moles or 5.4 * 10^-3 moles

B) Using the same molarity equation as it was used in letter A, we can find the number of moles:

M = n/V

0.0203M = n/0.00928

n = 0.000188 moles or 1.88 * 10^-4

C) Since the ratio of this reaction HCl + NaOH is 1:1, which means I need 1 mol of HCl to react with 1 mol of NaOH, we can easily find the excess by subtracting both numbers of moles:

Moles of HCl - Moles of HCl that reacted

0.0054 - 0.00018 = 0.0052 of excess of HCl or 5.2 * 10^-3

HCl + NaOH -> NaCl + H2O

3 states

Matter can exist in three forms namely;

• Solid state

• Liquid state

• Gaseous state

From the given scenario, water is known to exist as ice cubes (which is the solid state). Also since the water Aon her skin evaporated the water changed to steam (gaseous state) in this case.

Also note that the ice cubes melted in the glass. This melted ice changes to liquid ,at this point. Therefore, we can conclude that the water in the scenario exists in three forms (Liquid, Solid and Gas).

Explanation:

Given the following reaction.

NO (g) + 1/2 O₂ (g) <---> NO₂ (g)

We have to find the relationship between its Kc and Kp.

The Kp can be calculated from the Kc using the following expression.

Kp = Kc * (R*T)^(Δn)

Where Δn is the sum of the coefficients of the products minus the sum of the coefficients of the reactants. So Δn will be equal to:

Δn = Σ n of products - Σ n of reactants

Δn = 1 - (1 + 1/2)

Δn = -1/2

So we can say that:

Kp = Kc * (R*T)^(Δn)

Kp = Kc * (R*T)^(-1/2)

Kc = Kp * (R*T)^(1/2)

Answer: Kc = Kp * (R*T)^(1/2)

We can change a hydrate into anhydrous compound by heating it to drive off the water (dehydrate )

Correct choice is therefore anhydrous . Option 2 .