A 38.0 mL sample of 1.10 M KBr and a 57.0 mL sample of 0.570 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 75.0 mL .How many grams of silver nitrate are required to precipitate out silver bromide in the final solution?

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of substance = 147 mL

density = 1.76 g/mL

The mass of the substance is

mass = 1.76 × 147

We have the final answer as

Hope this helps you

To prepare 12 capsules each containing 80 mg of morphine sulfate and 3.2 mg of naltrexone hydrochloride, the following calculations can be used:

Calculate the total weight of the morphine sulfate and naltrexone hydrochloride: 80 mg + 3.2 mg = 83.2 mg

Calculate the weight of the diluent required: 12 capsules * 83.2 mg/capsule = 999.6 mg

Calculate the volume of the diluent required based on its density (assume a density of 0.9 g/mL for lactose): 999.6 mg / (0.9 g/mL) = 1.11 mL

Calculate the weight of the diluent required based on its volume: 1.11 mL * 0.9 g/mL = 1 g

Calculate the amount of the diluent required based on the sensitivity of the prescription balance: 1 g / (6 mg/g) = 166.7 mg

The amount of the diluent required according to this calculation is 166.7 mg. This amount should be rounded up to the nearest whole number (167 mg) to account for the 4% error tolerance. The final aliquot would therefore contain 167 mg of lactose, 80 mg of morphine sulfate, and 3.2 mg of naltrexone hydrochloride.

Answer:

(a) \(pH=1\)

(b) \(pH=1.3\)

(c) \(pH=13\)

(d) \(pH=12.7\)

Explanation:

Hello,

In this case, we define the pH in terms of the concentration of hydronium ions as:

\(pH=-log([H^+])\)

Which is directly computed for the strong hydrochloric acid (consider a complete dissociation which means the concentration of hydronium equals the concentration of acid) in (a) and (c) as shown below:

(a)

\([H^+]=[HCl]=0.1M\)

\(pH=-log(0.1)=1\)

(b)

\([H^+]=[HCl]=0.05M\)

\(pH=-log(0.05)=1.3\)

Nevertheless, for the strong sodium hydroxide, we don't directly compute the pH but the pOH since the concentration of base equals the concentration hydroxyl in the solution:

\([OH^-]=[NaOH]\)

\(pOH=-log([OH^-])\)

\(pH=14-pOH\)

Thus, we have:

(b)

\(pOH=-log(0.1)=1\\pH=14-1=13\)

(d)

\(pOH=-log(0.05)=1.3\\pH=14-1.3=12.7\)

Best regards.

The volume of \(N_2O_5\) needed to produce 9.64 L of \(NO_2\) is 4.97 L, calculated using stoichiometry and the ideal gas equation.

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The balanced nuclear equation for the beta decay of 234/90Th can be represented as follows: ^234/90Th --> ^234/91Pa + e^0/-1β

In this equation, the nucleus of thorium-234 (234/90Th) undergoes beta decay. During beta decay, a neutron within the nucleus is converted into a proton, resulting in the emission of an electron (beta particle). As a result, the thorium-234 nucleus is transformed into protactinium-234 (234/91Pa) by gaining one proton.

The beta particle emitted during the decay process is represented as e^0/-1β, where the superscript 0 denotes that the electron has no charge (neutral), and the subscript -1 indicates that the electron carries a negative charge of -1.

It is important to note that in a nuclear equation, the total atomic mass and atomic number on both sides of the equation must be equal to maintain a balanced equation and conserve mass and charge.

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Answer:

B. Temperature of a gas is decreasing.

C. Temperature of a liquid is rising.

D. Particles of a gas are condensing into a liquid

Explanation:

Simply, the diagram shows physical changes of a substance.

- Region A: we see the substance is very compacted with very closely attached molecules which characterizes solids.

Transition A—C (Region B):

\({ \red{ \dashrightarrow{ \rm{ \: melting}}}} \\ { \blue{ \dashleftarrow{ \rm{ freezing}}}}\)

From A to C, a solid is changing to liquid state by melting down and the reverse process is freezing.

Melting may be cause by increasing pressure and increasing the temperature of the substance. And freezing is the opposite.

- Region C: We see the substance has molecule further apart than in A. This characterizes liquid feature.

Transition C—E (Region D):

\({ \red{ \dashrightarrow{ \rm{ \: evaporation}}}} \: \\ { \blue{ \dashleftarrow{ \rm{ condensation}}}}\)

From C to E, liquid is changing to gaseous state by evaporation down and the reverse process is condensation. Evaporation occurs due to increase in pressure and temperature of the liquid, and condensation is the opposite.

- Region D

The molecules are furthest apart. This characterizes gaseous feature.

Note that also E can change to A and vice versa directly by sublimation.

Answer:

Mn= +3 charge

Explanation:

if you take what we know, and that would be the charge of oxygen, we know that oxygen has a 2- charge and there are 3 sets of O^2-  so multiply the number of oxygen times the charge and you get 6-.

Next set up an equation as listed in the picture  which will be 2(x)=6

and that is the charge of the Mn ion.

Answer:

since the modern periodic table is made in ascending order by the atomic number fluorine has the most protons.

The highlighted element that has the greatest number of protons is Iron, Fe. Thus, the correct option for this question is B.

Protons may be defined as a type of subatomic particles which are generally present in the centermost part of an atom known as the nucleus along with neutrons. These subatomic particles are positively charged in nature. Ernest Rutherford was known to discover these particles.

According to the question, the number of protons is generally governed by an atomic number of a chemical element. For example, fluorine has an atomic number of 9. It has the same number of protons in its nucleus. The number of protons in Iron is 26, while the number of protons in Calcium is 20. And the number of protons in aluminum is 13.

Therefore, an iron is the highlighted element that has the greatest number of protons. Thus, the correct option for this question is B.

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Answer:

Last one

hope it helps mvhsbshsjjak

The density of carbon dioxide gas at 100.0°C and 9.81 atm pressure is approximately 1.950 g/L.

To determine the density of carbon dioxide gas at 100.0°C and 9.81 atm pressure, we can use the ideal gas law, which is given by:

PV = nRT where:

P = pressure of the gas (in atm)

V = volume of the gas (in liters)

n = number of moles of the gas

R = ideal gas constant (0.0821 L atm / (mol K))T = temperature of the gas (in Kelvin)

First, we need to convert the given temperature from Celsius to Kelvin by adding 273.15 to it:

Temperature in Kelvin (T) = 100.0°C + 273.15T = 373.15 K

Next, we can rearrange the ideal gas law to solve for density, which is defined as mass per unit volume:

Density (d) = mass / volume

Since density is equal to mass divided by volume, we can rewrite the ideal gas law equation in terms of density: d = (m / V) = (P * M) / (RT) where:m = mass of the gas (in grams);M = molar mass of the gas (in g/mol).

We also need to convert the pressure from atm to Pascals (Pa) since SI units are used for density:

Pressure in Pascals (Pa) = Pressure in atm * 101325 (Pa/atm)

Given:Temperature (T) = 373.15 K

Pressure (P) = 9.81 atm * 101325 Pa/atm = 997647.05 Pa (rounded to 5 significant figures)

Molar mass of carbon dioxide (CO2) = 44.01 g/mol (12.01 g/mol for carbon + 2 * 16.00 g/mol for oxygen)

Plugging in the given values into the equation for density:

d = (P * M) / (RT)d = (997647.05 Pa * 44.01 g/mol) / (0.0821 L atm / (mol K) * 373.15 K)

Note that the units cancel out appropriately to give us the density in g/L, since mass is in grams and volume is in liters:d = 1.950 g/L

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Your answer is FE, or iron!

The piece of evidence that best identifies the type of reaction as nuclear or chemical is: Chemical, because a new substance is formed. Option 4

In this scenario, the observation that a new substance is formed is a key characteristic of a chemical reaction. Chemical reactions involve the rearrangement of atoms to form different substances with distinct properties. The formation of a new substance indicates a chemical change has occurred.

The other pieces of evidence listed do not necessarily point to a nuclear reaction:

Chemical, because energy is released during the reaction: Energy can be released in both nuclear and chemical reactions, so this observation alone is not sufficient to determine the type of reaction.

Nuclear, because energy is released during the reaction: While energy can be released in nuclear reactions, it is not exclusive to them. Chemical reactions can also release energy, such as in exothermic reactions.

Nuclear, because the mass decreased after the reaction: This observation suggests a change in mass, which could be indicative of a nuclear reaction. However, it is important to consider that chemical reactions can also involve changes in mass, such as the formation of gases or dissolution of a solid.

Overall, the most conclusive evidence to identify the type of reaction is the formation of a new substance, which aligns with a chemical reaction.

Option 4

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Answer: 177.23 g.

Explanation:

the volume of the aluminum bar is

1.7 cm x 3.0 cm x 12.9 cm

= 65.61 cm^3

2.7 g/cm^3 x 65.61 cm^3

177.23g

Answer:

1) Oxidation-Reduction (Redox) Reaction

2) Combustion Reaction

3) Decomposition Reaction

4) Synthesis Reaction

5) Single Displacement (Substitution) Reaction

6) Double Displacement (Metathesis) Reaction

7) Acid-Base Neutralization Reaction

8) Precipitation Reaction

Here are the Answer:

1. Oxidation-Reduction (Redox) Reaction

2. Combustion Reaction

3. Decomposition Reaction

4. Synthesis Reaction

5. Single Displacement (Substitution) Reaction

6. Double Displacement (Metathesis) Reaction

7. Acid-Base Neutralization Reaction

8. Precipitation Reaction

Hope this Helped! Don't have a good day, have a GREAT DAY!

Region 2 of the graph showing the temperature and the time shows that the substance is in both liquid and solid phases. Thus, region 2 is the correct option.

The phases of the matter are the arrangement of the constituent particles of the atoms in a space that defines the solid, gas, and liquids. The phases of the matter can exist together under certain conditions.

When the melting points of the sold and the liquid are at equilibrium then the point of crystallization exists. In the graph, the temperature remains constant and does not change with time.

Therefore, the solid and liquid phases exist in region 2.

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Answer:

question not clear can u rewrite

The society with the least negative effects on the environment is probably the one with a small population, traditional farming methods, no access to contemporary technology, and self-sufficient food production.

This is due to the fact that their way of living is less dependent on modern infrastructure and technology, both of which have a negative impact on the environment. Additionally, their agricultural methods are probably more environmentally friendly and sustainable.

The environmental effects of the other societies on the list would all be greater. Because of the use of fossil fuels and the production of products that require a lot of resources, a big, industrialized society with high levels of consumption would have a significant carbon footprint.

It would still take a lot of resources to maintain its infrastructure and create products in a less populous, highly industrialized society with moderate consumption levels, which would have a negative effect on the environment.

Given that the size of the population alone would necessitate significant resource consumption and infrastructure development, a big population with moderate industrialization and consumption levels would also have a big effect on the environment.

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Given the empirical formula, the molecular formula that has a mass of 214.8g is C₁₀H₁₅O₅

From the question, we are to determine the molecular formula

From

Molecular formula = (Empirical formula)n

Where

\(n = \frac{Molecular\ formula\ mass}{Empirical\ formula\ mass}\)

From the given information,

Empirical formula is C₂H₃O

Therefore, Empirical formula mass = (12×2) + (1×3) + (16)

Empirical formula mass = 24 + 3 + 16

Empirical formula mass = 40 g

Then,

\(n = \frac{214.8}{40}\)

n = 5.37

n ≅ 5

Therefore,

Molecular formula = (C₂H₃O)₅

Molecular formula = C₁₀H₁₅O₅

Hence, given the empirical formula, the molecular formula that has a mass of 214.8g is C₁₀H₁₅O₅

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Answer:it would be in group 14 and in period 8.

Explanation:

Answer:

b

Explanation:

Answer:

b

Explanation:

Condition : graphite + hydrogen gas

Chemical formula : C + H2

Reaction formula :

C + H2 -> C2H6

#First, you see the number of atom

•Product

C = 1

H = 2

•Reactant

C = 2

H = 6

#Note that, in a chemical reaction both number of each atom in product must be equal in reactant so, you think what number you need to put Infront of the chemical formula so that the number of atom equal

2C + 3H2 -> C2H6

#Now check again

•Product

C = 2

H = 6

•Reactant

C = 2

H6

#Now, its equal. The bold one is the balance chemical reaction

Reactant -> product (the thing you get after reaction)

Answer:

0.01125

Explanation:

:b

Answer:

\(\huge\boxed{\sf Ribosomes}\)

Explanation:

\(\rule[225]{225}{2}\)

NiCO3(s) + H2SO4(aq) ---> NiSO4(aq) + CO2 (g) + H2O (l). The reaction results in the formation of carbonic acid, H2CO3, which breaks down into water and carbon dioxide gas.

When magnesium carbonate and diluted sulfuric acid H2SO4 are combined, magnesium sulfate, water, and carbon dioxide gas are produced. The following is the balanced chemical equation for the reaction of magnesium carbonate with diluted sulfuric acid: MgSO4 aq + H 2 O + CO 2 g = H 2 SO4 aq.

As a result, sodium carbonate and sulfuric acid react to generate sodium sulfate, which has the chemical formula Na2SO4. Water and carbon dioxide are the other byproducts. So, in the aforementioned reaction, sodium sulfate, water, and carbon dioxide were all produced.

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Answer:H2SO4 or B

Explanation: I TOOK THE TEST  

The mass after combining the liquids is less than the sum of the masses before because the density of the resulting mixture is a product of the individual densities of the liquids and is less than the density of the denser liquid. Hence, the liquid has a lesser mass.

The density of a substance is the ratio of the mass and the volume of the substance.

Mathematically;

The density of a substance is a measure of how tightly packed the particles of the substance are.

The density of a substance increases with a decrease in the volume oif a unit mass of a substance.

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When you reach into the oven to take out the cookies, the thermal energy from your hand transfers to the cookies. The cookies become hot while your hand becomes cooler.

What is thermal energy?
Thermal energy is the energy contained within a system that controls its temperature. The flow of thermal energy is defined as heat. Thermodynamics is a branch of physics that deals with how heat is transferred between different systems and how work is done in the process (see the first law of thermodynamics).

We are usually interested in the role of thermal energy in ensuring energy conservation in the context of mechanics problems. Almost every transfer of energy in real-world physical systems occurs with less than 100% efficiency and results in some thermal energy. Typically, this energy takes the form of low-level thermal energy.

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Answer:Favorable

Explanation:um I know That it is Favorable sorry!

Answer: Oxygen

Explanation: Its found on the periodic table as an element.

Answer:

490 J.

Explanation:

The following data were obtained from the question:

Mass (m) = 5 Kg

Height (h) = 10 m

Acceleration due to gravity (g) = 9.8 m/s²

Potential energy (P.E) =..?

Potential energy is the energy stored in a body by virtue of its location. Mathematically, it can be expressed as:

P.E = mgh

Where:

m is the mass of the object measured in kilograms (Kg).

g is the acceleration due to gravity and the value is 9.8 m/s².

h is the height to which the object is located measured in metre (m)

P.E is the potential energy measured in joule (J).

With the above formula, we can obtain the potential energy possed by the object as follow:

P.E = mgh

P.E = 5 x 9.8 x 10

P.E = 490 J

The,the potential energy possed by the object is 490 J