You have a graduated cylinder with 10 mL of water in it.
You add 300 g of lead weights, and the volume of the
water rises to 40 mL. What is the density of the lead?

The mass of (NH4) 2S in the solution is : Mass = 0.0600 mol × 60.08 g/mol = 3.60 g.

The given molarity and volume of the solution can be used to calculate the number of moles of ammonium sulfide (NH4)2S.Then, the number of moles can be converted to mass using the molar mass of (NH4)2S.Mass of ammonium sulfide (NH4)2S in 3.00 L of a 0.0200 M solution is given by : Mass = moles × molar mass.The number of moles of (NH4)2S can be found using the equation:Molarity = Number of moles / Volume.Rearranging this equation, we get:Number of moles = Molarity × Volume Number of moles of (NH4)2S = 0.0200 M × 3.00 L.Number of moles of (NH4)2S = 0.0600 mol.The molar mass of (NH4)2S can be calculated by summing the molar masses of ammonium (NH4) and sulfide (S) ions.Molar mass of (NH4)2S = (2 × Molar mass of NH4) + Molar mass of S= (2 × 14.01 g/mol) + 32.06 g/mol= 60.08 g/mol.

For more question on mass

https://brainly.com/question/1838164

#SPJ8

Answer:

when he collided with the passerby

Explanation:

Answer:

15 m/min

Explanation:

You take the 1500 divide by 10 and your answer is 15

Answer:

O The core

Explanation:

Subatomic particles include electrons, the negatively charged, almost massless particles that nevertheless account for most of the size of the atom, and they include the heavier building blocks of the small but very dense nucleus of the atom, the positively charged protons and the electrically neutral neutrons. Which therefore means that the core is NOT a subatomic particle.

Hope this helps!

Have a nice day!

If you find my answer helpful

Pls consider marking my answer as Brainliest! It would mean a lot!

Answer:

C

Explanation:

In the chemical  equation of cellular respiration, C₆H₁₂O₆  is not a product of cellular respiration.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ7

Answer:

The common thing among the three states of matter is - They are made up of small tiny particles. They have a particular mass and can occupy space . This three states have volume in it . The atoms of this three states have force of attractions between them .

Explanation:

hope this helps <3

Explanation:

Since [H+] [OH-] =10^(-14)

[H+] = (10^-14) / (1.4×10^-10)

Answer:

Drinking water should have sufficiently low levels of dissolved salts or microbes.

Explanation:

Answer:

i dont XD

Explanation:

Answer:

no

Explanation:

The validity of the statements are as follows:
1. True

2. True

3. False

4. True

5. False

6. False

7. True

8. True

9. False

10. True

11. False

12. False

13. True

14. True

15. False

Food scientists are using techniques such as irradiation and pulsed electric field technology to extend the shelf-life of food, while artificial flavors can be created to mimic the taste of natural foods, as done by Givaudan, the world's largest flavorings manufacturer.

Here are the correct responses to the statements:

1. True: Bursts of high-voltage electricity can kill bacteria such as E. coli and salmonella.

2. True: Food scientists can copy the flavor of natural foods using artificial alternatives.

3. False: The shelf-life of food refers to how long the product can be stored before it becomes unfit for consumption, not the price.

4. True: Scientists refer to artificial flavor components as "nature identical chemicals."

5. False: The statement mentions that Givaudan has produced 200 synthetic flavors for strawberry, not 300 flavors for a real banana.

6. False: Bacteria like salmonella and E. coli are harmful and can cause food spoilage, so they do not extend the shelf-life of food.

7. True: Food manufacturers aim to extend food freshness to serve consumers and increase profits.

8. True: Pulsed electric field technology can give food a fresher appearance even for an extended period.

9. False: Synthetic flavors are not inherently natural; they are artificial.

10. True: Irradiation involves exposing a product to an acceptable level of gamma ray radiation.

11. False: A real banana has 225 natural flavor components, not 200.

12. False: The Swiss firm Givaudan is the world's biggest flavorings manufacturer but does not exclusively supply irradiated food.

13. True: Fresh foods exposed to bursts of high-voltage electricity can stay fresh longer.

14. True: Food companies invest significant funds in research to find ways to prolong the shelf-life of food.

15. False: The name of the vice president mentioned is Dr. Heini Menzi, not Dr. Heinz Menzi. The location mentioned is outside Zurich, not specifically in Zurich.

Learn more about irradiation

https://brainly.com/question/31173275

#SPJ11

Answer:

\( {S}^{16} \)

group 16 period 2 of the periodic table

note: that is not the electronic configuration, that is the Bohr model.

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Sulfur is the correct answer for our given question

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

We can find any element in periodic table if its electronic configuration is given. From electronic configuration, we can find the group number and the period number. So, according to our question the configuration is 2,8,6. Form here we can say that  atomic number of element is 16 and the valence electron is 6 so the only group in the periodic table that has valence electron 6 is the group 16 that is oxygen family.

Therefore Element is sulfur and is found in group 16 and period 2

Learn more about periodic table , here:

https://brainly.com/question/11155928

#SPJ5

Answer:

79mL

Explanation:

Answer: The volume of given object is 12.0 \(cm^{3}\).

Explanation:

Given: Length = 4.0 cm

Width = 1.2 cm

Height = 2.5 cm

Formula to calculate the volume of such an object is as follows.

\(Volume = length \times width \times height\)

Substitute the values into above formula as follows.

\(Volume = length \times width \times height\\= 4.0 cm \times 1.2 cm \times 2.5 cm\\= 12.0 cm^{3}\)

Thus, we can conclude that the volume of given object is 12.0 \(cm^{3}\).

Answer:

Next, the lb will be canceled at 2.2 lb and the kg would be canceled at 1 kg. You cross, multiply, then. 46 x 1 x 1000 is 46000, only moving to the decimal point. 1 x 2.2 x 1 will stay the same, so you'd have 46000 over 2.2.

Explanation:

kuroo man <3

Answer:

Next, the lb will be canceled at 2.2 lb and the kg would be canceled at 1 kg. You cross, multiply, then. 46 x 1 x 1000 is 46000, only moving to the decimal point. 1 x 2.2 x 1 will stay the same, so you'd have 46000 over 2.2.

Explanation:

halo

Answer:

induced draft blower

Explanation:

quizlet

Answer: solid chemicals in waterharden and form rocks

Explanation:

Answer:

Fragments of rock are squeezed and cemented together.

Explanation:

I took the test and got the answer below:

Answer:

hi there !!

B) Water evaporates into steam.

this is correct because only physical state changes, steam can be cooled down to get water again.

The correct ranking of compounds in order of increasing keq for this equilibrium is Acetone < Propanone < Benzaldehyde.

The correct ranking of compounds in order of increasing keq for the equilibrium of each of the carbonyl compounds with HCN to produce cyanohydrins is

Acetone < Propanone < Benzaldehyde.

In the above reaction, the cyanide ion acts as a nucleophile and attacks the carbonyl carbon atom in the carbonyl compound to form an intermediate compound. Then the intermediate compound formed by the reaction between HCN and the carbonyl compound undergoes an intramolecular rearrangement to form cyanohydrin.Based on the stability of intermediate compound formed, the order of increasing stability is as follows:

Acetone < Propanone < Benzaldehyde.

Since the keq is directly proportional to the stability of the intermediate, the order of increasing keq for the equilibrium of each of the carbonyl compounds with HCN to produce cyanohydrins is

Acetone < Propanone < Benzaldehyde.

The correct ranking of compounds in order of increasing keq for this equilibrium is

Acetone < Propanone < Benzaldehyde.

To know more about Benzaldehyde visit:

https://brainly.com/question/29754365

#SPJ11

Answer:

3.38 moles of O2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

4CH2OH + 5O2 → 4CO2 + 6H2O

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Finally, we shall determine the number of mole of O2 needed to react with 2.7 moles of CH2OH. This can be obtained as follow:

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Therefore, 2.7 moles of CH2OH will require = (2.7 × 5)/4 = 3.38 moles of O2 for complete combustion.

Thus, 3.38 moles of O2 is required.

Answer:

It is Double Replacment

Explanation:

They traded bonds.

Balanced Equation is 2AgNO3 + CaCl2 = 2 AgCl +1Ca(NO3)2

Explanation:

when a big number is behind a compound, it means there is 2 of it.

for example 2Na would mean there is a sodium atom and another sodium atom not joined together, but they're just near.

when there is a 2 (which should be small and at the bottom) after an atom, it means there are 2 of that atom.

i hope this helps

Glycolysis involves the breakdown of one molecule of glucose into pyruvate and energy. It is the common biological process in all livings to synthesis energy.

Glycolysis is an anaerobic energy source and metabolic pathway that has evolved in nearly all organisms. Although it does not require oxygen, which is why it serves as the first step in anaerobic respiration, it is also the first step in cellular respiration.

The oxidation of glucose molecules, the single most important organic fuel in plants, microbes, and animals, is involved in the process. Glycolysis eventually breaks down glucose into two pyruvate molecules.

Pyruvate enters the citric acid cycle and undergoes oxidative phosphorylation in aerobic conditions, resulting in the net production of 32 ATP molecules.

Therefore, glycolysis involves the breakdown of one molecule of glucose into pyruvate and energy.

Find more on glycolysis:

https://brainly.com/question/27178607

#SPJ1

To calculate which solution will have the smaller freezing-point depression between the two solutions, one with 100.0 g of methanol in 500.0 g of water and the other with 200.0 g of methanol in 500.0 g of water, we need to consider the concept of freezing point depression.

Freezing point depression is a phenomenon in which the freezing point of a solution is lower than that of the pure solvent. It depends on the concentration of the solute, in this case, methanol.

Solution 1: 100.0 g methanol in 500.0 g water
Solution 2: 200.0 g methanol in 500.0 g water

Comparing the two solutions, Solution 1 has a lower concentration of methanol than Solution 2. Therefore, Solution 1 will have a smaller freezing-point depression compared to Solution 2, since the freezing point depression is directly proportional to the concentration of the solute in the solution.

To know more about freesing point depression : https://brainly.com/question/31357864

#SPJ11

The chemical equation that depicts a balanced chemical reaction is the one in choice B.

In this choice, the same number of atoms of each elements is in both, reactants and products sides, which means that the law of conservation of mass is fulfilled.

The correct answer is choice B.

A catalyst is a chemical that can be included in a reaction to speed up the process without being consumed. Typically, catalysts shorten the activation energy of a process or alter its mechanism.

By offering a different pathway with lower activation energy, a catalyst accelerates the reaction both forward and backward. More reactants can easily pass the energy barrier if the activation energy is decreased. As a result, the rate of reaction rises. A catalyst is a material that speeds up the rate of reaction by increasing the free energy change in the process. However, because it is not consumed by the reaction, a catalyst can be chemically retrieved unaltered after having been used to accelerate or catalyze a reaction.

Learn more about activation energy here-

https://brainly.com/question/28384644

#SPJ4

Answer:

Explanation:

It's basic math bruv

The ph of a solution containing a caffeine concentration of 435 mg/l is 7.52.

According to given information:

Concentration of caffeine is 435 mg/L = 0.435g/L

The molar mass of caffeine is 194.19 g/mol

Therefore the molarity is:

M = n / v

where,

n is moles of solute

v is litres in solution

Molarity = (0.435/194.19) mol/L

Molarity = 0.002240 mol/L

Molarity = 0.002240M

Given pKb = 10.4

Kb = 10^-11 pKb = 10^ - 10.4 = 3.981 x 10^ -11

Kb is equivalent to:

Kb = [caffeine H+][OH-] / [caffeine]

3.981 x 10^ -11 = [caffeine H+][OH-] / (0.002240)

[caffeineH+][OH-] = 8.917 x 10^ -14

But since:

[caffeineH+] = [OH-]

Hence,

[OH-]^2 = 8.917 x 10^ -14

[OH-] = 2.986 x 10^ -7

The formula for pH is:

pH = 14 + log [OH-]

pH = 7.52

To know more about molarity visit :

https://brainly.com/question/12127540

#SPJ4