# Assuming you start with 10.0 g of zinc and 10.0 g hydrochloric acid, identify the limiting reagent and determine what mass of the other will remain after the reaction runs to completion.

QUESTION POSTED AT 12/02/2020 - 04:39 PM

The balanced chemical reaction for the substances given would be as follows:

Zn + 2HCl = ZnCl2 + H2

We are given the amounts of the reactants used in the reaction. We use these amounts to determine which is the limiting and excess reactant. We do as follows:

10 g Zn (1 mol / 65.38 g) = 0.1530 mol
10 g HCl (1 mol / 36.46 g) =  0.2743 mol

From the the stoichiometric ratio which is 1 is to 2, the limiting reactant would be hydrochloric acid and the excess would be zinc metal.

Mass of zinc that remains = 0.1530 - (0.2743 / 2) = 0.0159 g Zn

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Original Recipe
1 (18 1/4 ounce) Box devils food cake mix
1/2 cup vegetable oil
2 large eggs
Confectioners' Sugar (for rolling)

Directions:
Preheat oven to 350 degrees. Stir (by hand) cake mix, oil, and eggs- until dough forms. Dust with sugar and shape into 1 inch balls. Roll balls in sugar and place on ungreased cookie sheet. Bake 8-10 minutes. Remove from pan after one minute and put on cooling rack.
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ANSWERED AT 28/02/2020 - 07:34 PM

QUESTION POSTED AT 28/02/2020 - 07:34 PM

### In a science demonstration, a teacher mixed zinc (Zn) with hydrogen chloride (HCl) in a flask and quickly attached a balloon over the mouth of the flask. Bubbles formed in the solution and the balloon inflated.

One or more new substances formed.

ANSWERED AT 28/02/2020 - 05:25 PM

QUESTION POSTED AT 28/02/2020 - 05:25 PM

### Question 1 what happens during a neutralization reaction?

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. The neutralization of a strong acid and strong base has a pH equal to 7.

• New substances called SALTS and water are formed in neutralization reactions.
• For example, hydrochloric acid and sodium hydroxide solution react together to form water and sodium chloride solution. The H+ ions and OH– ions produce the water, and the Na+ ions and Cl– ions produce the sodium chloride, NaCl(aq).

ANSWERED AT 28/02/2020 - 05:11 PM

QUESTION POSTED AT 28/02/2020 - 05:11 PM

### Every chemical reaction involves a change in

A chemical reaction is when you cant change something back to the way it was before

ANSWERED AT 28/02/2020 - 05:09 PM

QUESTION POSTED AT 28/02/2020 - 05:09 PM

### Can a weak acid be titrated with a weak base

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No indicator is suitable when titrating weak acid with weak alkali

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This was a statement in my book:

A solution of a weak acid cannot be titrated with a weak base using an indicator to find the end-point because the pH change is too gradual close to the equivalence point.

Could someone please elaborate the bold text.

acid-base ph titration
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asked May 31 '14 at 13:16

Eliza
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Check this link and search for the section "Titration curves for weak acid v weak base". Be sure to click on the "indicator" link in the section's note, too. Does that help? – Nicolau Saker Neto May 31 '14 at 13:30

if there is a weak base and a weak acid, there will be at least two pKs, complicating the titration curve. The full pH range may be unobtainable by adding a weak base. – DavePhD May 31 '14 at 13:45
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An indicator works when the solution's pH is in its range. It's not necessarily the equivalence point. The point is called the end point where it actually changes color.

If the difference in volume is small between the equivalence and end points, then the indicator can be used. Since a gradual change implies more volume must be added to obtain the same pH change in other acid base titration, the difference between equivalence point and end point(if you use indicator) will be more and therefore indicator will not be suitable for it.

edited Jul 31 '14 at 13:45

jonsca♦
1,68261947
answered May 31 '14 at 16:58

DSinghvi
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ANSWERED AT 28/02/2020 - 05:07 PM

QUESTION POSTED AT 28/02/2020 - 05:07 PM

### Amino acids cannot be broken down to provide energy.

False, Dietary proteins are first broken down to individual amino acids by various enzymes and hydrochloric acid present in the gastro-intestinal tract. These amino acids are further broken down to α-keto acids which can be recycled in the body for generation of energy, and production of glucose or fat or other amino acids.

ANSWERED AT 28/02/2020 - 04:42 PM

QUESTION POSTED AT 28/02/2020 - 04:42 PM

### Acid mine drainage is formed when water flows past exposed rocks that leach out ______________________ that react with water and oxygen to form

Acid mine drainage is formed when water flows past exposed rocks that leaches out sulfates that react with water and oxygen to form. Sulfate is the answer which means that a salt or it is sulfuric acid. This polyatomic anion is part of our everyday life.

ANSWERED AT 28/02/2020 - 04:42 PM

QUESTION POSTED AT 28/02/2020 - 04:42 PM

### What is the molarity of a solution of kno3 (molecular mass = 101 that contains 404 grams of kno3 in 2.00 liters of solution? a 1.00 b 2.00 c 0.500 d 4.00?

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D

ANSWERED AT 28/02/2020 - 04:37 PM

QUESTION POSTED AT 28/02/2020 - 04:37 PM

### Mixing 25.0 ml of 1.2 m hclo4 and 25.0 ml of 1.1 m naoh were mixed. the temperature of the initial solution was 22.4 o c. assuming a heat of neutralization of 55.8 kj/mol, what would the final temperature be if the specific heat for this solution is 4.032 j/g o ?

I think its
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ANSWERED AT 28/02/2020 - 04:35 PM

QUESTION POSTED AT 28/02/2020 - 04:35 PM

### A certain vinegar is 6.02% acetic acid (hc2h3o2, by mass. how many grams of acetic acid are contained in a 355 ml bottle of vinegar. assume a density of 1.01 g/ml.

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ANSWERED AT 28/02/2020 - 04:11 PM

QUESTION POSTED AT 28/02/2020 - 04:11 PM

### What happens to the temperature of water between the time ice melts and water boils (this is partially quoted from a question)? Also, what change occurs in temperature after water starts boiling (this is also from a booklet)? Thank you and please explain your thoughts. This is based on the phase changes of water, and you should refer to a graph on the phase changes of water.

Your first statement is very ambiguous so I will give it the best shot as to what you are saying.
The temperature, between the point of ice melting and water boiling, is increasing as water is in its liquid state.
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ANSWERED AT 28/02/2020 - 03:47 PM

QUESTION POSTED AT 28/02/2020 - 03:47 PM

### Determining missing genotypes

What are the genotypes

ANSWERED AT 28/02/2020 - 03:42 PM

QUESTION POSTED AT 28/02/2020 - 03:42 PM

### Write the symbol for every chemical element that has atomic number less than 74 and atomic mass greater than 173.8u

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ANSWERED AT 28/02/2020 - 03:22 PM

QUESTION POSTED AT 28/02/2020 - 03:22 PM

### Describe four ways you could increase the rate of a chemical reaction.

1. Increase the temperature

2. Increase the pressure of an reacting gas

3. Solid reactants are broken into smaller pieces

4. The concentration of a dissolved reactant is increased.

ANSWERED AT 28/02/2020 - 03:06 PM

QUESTION POSTED AT 28/02/2020 - 03:06 PM

### During a chemical reaction, energy is converted from one form to another increases decreases is used up as bonds are broken and formed

Is used up as bonds are broken and formed .

ANSWERED AT 28/02/2020 - 03:02 PM

QUESTION POSTED AT 28/02/2020 - 03:02 PM

### During a chemical reaction, _______ and _______ are both conserved. a. mass; electricity b. weight; electricity c. mass; energy d. weight; energy

The answer is C mass and energy

ANSWERED AT 28/02/2020 - 02:55 PM

QUESTION POSTED AT 28/02/2020 - 02:55 PM

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Egg white, Camembert cheese, beets, yogurt, sauerkraut

ANSWERED AT 28/02/2020 - 02:47 PM

QUESTION POSTED AT 28/02/2020 - 02:47 PM

### What type of reaction is radioactive decay? 1zero order 2first order 3second order 4third order

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Hope I helped! :)

ANSWERED AT 28/02/2020 - 02:46 PM

QUESTION POSTED AT 28/02/2020 - 02:46 PM

### Suppose 13.00 mL of 0.100 M barium hydroxide is required to neutralize 17.00 ml of nitric acid with an unknown concentration. What is the concentration of the nitric acid. Express your answer in mol/L

The concentration of solution is

Further Explanation:

The concentration is the proportion of substance in the mixture. The most commonly used concentration terms are as follows:

1. Molarity (M)

2. Molality (m)

3. Mole fraction (X)

4. Parts per million (ppm)

5. Mass percent ((w/w) %)

6. Volume percent ((v/v) %)

Molarity is a concentration term that is defined as the number of moles of solute dissolved in one litre of the solution. It is denoted by M and its unit is mol/L.

The molarity equation is given by the following expression:

Here,

is the molarity of the first solution.

is the volume of the first solution.

is the molarity of the second solution.

is the volume of the second solution.

In the concerned question, is neutralized by . So molarity equation becomes,

…… (1)

Here,

is the molarity of solution.

is the volume of solution.

is the molarity of solution.

is the volume of solution.

Rearrange equation (1) to calculate .

…… (2)

The value of is 13 mL.

The value of is 0.100 M.

The value of is 17 mL.

Substitute these values in equation (2).

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1. What is the mass of 1 mole of viruses: brainly.com/question/8353774

2. Determine the moles of water produced: brainly.com/question/1405182

Subject: Chemistry

Chapter: Concentration terms

Keywords: molarity, 13 mL, 17 mL, 0.076 M, Ba(OH)2, M1, V1, M2, V2, HNO3, 0.100 M, molarity, volume.

ANSWERED AT 28/02/2020 - 02:39 PM

QUESTION POSTED AT 28/02/2020 - 02:39 PM

### When you do a displacement reaction with iron and copper what is the orange metal called

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ANSWERED AT 28/02/2020 - 02:21 PM

QUESTION POSTED AT 28/02/2020 - 02:21 PM

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ANSWERED AT 28/02/2020 - 02:17 PM

QUESTION POSTED AT 28/02/2020 - 02:17 PM

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ANSWERED AT 28/02/2020 - 02:09 PM

QUESTION POSTED AT 28/02/2020 - 02:09 PM

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The maximum number of electrons that an energy level can hold is determined from the formula 2n^2 equals the total number, where n is the energy level.  The first energy level holds 2*1^2=2 electrons while the second holds 2*2^2= 8 electrons.

ANSWERED AT 28/02/2020 - 02:04 PM

QUESTION POSTED AT 28/02/2020 - 02:04 PM

### A buffer is 0.282 m c6h5cooh(aq and 0.282 m na(c6h5coo(aq. calculate the ph after the addition of 0.150 moles of nitric acid to 1.0 l of the buffer. the pka of c6h5cooh is 4.20.

You have to use the Henderson-Hasselbalch equation. Keep in mind that because the Pka is given the equation changes form slightly:

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0.282 M of Acid (C6H5OOH) - 0.150 M = 0.132 M of acid
0.282 M of Base (C6HCOO) + 0.150 M = 0.432 M of bas3

Step 2 (Plug into equation):

PH = Pka + log[acid/base]
PH = 4.20 + log[0.132 M/0.432 M]

PH = 3.69

ANSWERED AT 28/02/2020 - 01:39 PM

QUESTION POSTED AT 28/02/2020 - 01:39 PM

### The titration of a 20.0 mL sample of an H2SO4 solution of unknown concentration requires 22.87mL of a 0.200M NaOH solution to reach the equivalence point. What is the concentration of the unknown acid solution?

M =n/v
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ANSWERED AT 28/02/2020 - 01:20 PM

QUESTION POSTED AT 28/02/2020 - 01:20 PM

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The mass is 5 grams because the mass hasn't changed. only the state of matter.

ANSWERED AT 28/02/2020 - 01:03 PM

QUESTION POSTED AT 28/02/2020 - 01:03 PM

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ANSWERED AT 28/02/2020 - 12:46 PM

QUESTION POSTED AT 28/02/2020 - 12:46 PM

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ANSWERED AT 28/02/2020 - 12:33 PM

QUESTION POSTED AT 28/02/2020 - 12:33 PM

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ANSWERED AT 28/02/2020 - 12:31 PM

QUESTION POSTED AT 28/02/2020 - 12:31 PM

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ANSWERED AT 28/02/2020 - 12:20 PM

QUESTION POSTED AT 28/02/2020 - 12:20 PM