calculate the volume of solution, if the solution weighs 85g with density of solution is 1.69 g/ml

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

(2)(½^(15/3)) = 0.0625 (5 half-lives) 102.4 grams order

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Answer:

Iron?

Explanation:

Answer:

The energy in cabbage leaves comes from the light from the sun.

Explanation:

The plant keeps the light (in the leaves) as energy to help make it grow.

Answer:

Explanation:

Here, we want to order the radiations in terms of energy

There is a proportional relationship between the mass and the energy

It is established that the radiation with a higher mass would have the lesser energy

Alpha decay has the highest mass and thus, the lowest energy. This is followed by beta decay, and finally, gamma decay

Answer:

atoms move faster

Explanation:

Space is produced when substances are heated. The atoms became extremely energetic and began to move much quicker than usual. When this happens, energy is released in the form of heat, light, and so on. As a result, kinetic energy rises and atoms collide more frequently.

The balloon contains 22.4 liters of N2 gas.

Several gas assumptions made by the ideal gas law aren't always true.  Explanation: For instance, the ideal gas law makes the assumption that gas particles don't have any volume and aren't drawn to one another. The gas law notion is constrained for the following reason.

We must first compute the number of moles of N2 before we can calculate the volume of N2 gas in liters. N2 has a molar mass of 28.02 g/mol.

n = mass / molar mass

n = 28.9 g / 28.02 g/mol

n = 1.031 moles

Now, we can use the ideal gas law to calculate the volume of N2 gas:

PV = nRT

V = nRT / P

V = (1.031 moles) x (0.08206 L·atm/K·mol) x (273.15 K) / (1 atm)

V = 22.4 L.

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Answer:

hi idk the answer

Explanation:

In 1 mole of calcium carbonate, there are approximately 18.066 x 10^23 moles of oxygen.

To determine the number of moles of oxygen (O) in 1 mole of calcium carbonate (CaCO3), we need to examine the chemical formula of calcium carbonate and identify the number of oxygen atoms present.

The chemical formula of calcium carbonate is CaCO3. In this formula, we have one calcium atom (Ca), one carbon atom (C), and three oxygen atoms (O).

The subscript numbers in the formula indicate the number of atoms for each element. Therefore, we have:

1 calcium atom (Ca)

1 carbon atom (C)

3 oxygen atoms (O)

To calculate the number of moles of oxygen in 1 mole of calcium carbonate, we multiply the number of oxygen atoms (3) by the Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of moles of oxygen (O) in 1 mole of calcium carbonate (CaCO3) = 3 moles of oxygen x (6.022 x 10^23 molecules/mol)

Calculating this value, we find:

Number of moles of oxygen (O) in 1 mole of calcium carbonate (CaCO3) ≈ 18.066 x 10^23 moles of oxygen

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By the concept of calculating moles ,it can br concluded that the no. of atoms of phosphorus in 8.80mol of copper(II) phosphate is=1.06\(x10^{25}\)

A mole is defined as amount of substance containing as many as elementary entities that are there in atoms of exactly 12 g of carbon-12.Therefore we can say,1 mole of copper(II) phosphate, Cu3(PO4)2, contains three moles of copper(II) cations and two moles of phosphate anions.

Again 1mole of phosphate anions contains one mole of phosphorus and four moles of oxygen.Considering all these informations we can conclude that:1 mole of copper(II) phosphate contains 2 moles of Phosphorus

Accordingle the sample contains=(8.80\(x\)2) moles of Phosphorus

                                    =(17.6\(x\)Avogadro's constant) atoms of  Phosphorus

                                    =(17.6\(x\)6.022\(x\)\(10^{23}\)) atoms of  Phosphorus

                                    =1.06\(x10^{25}\) [approx] no. of Phosphorus atoms

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In 8.80 moles of copper(II) phosphate, there are approximately 1.06 x 10²⁵ atoms of phosphorus.

The number of atoms of phosphorus in a given amount of a compound can be calculated using the concept of mole in chemistry. Copper(II) phosphate is Cu3(PO4)2, containing 2 moles of phosphorus (P) for every 1 mole of the compound. Avogadro's number (6.022 x 10²³) gives the number of atoms in one mole.

So, if there are 8.80 moles of copper(II) phosphate, there would be 2 × 8.80 moles of phosphorus. Multiplying this by Avogadro's number gives the total number of phosphorus atoms.

Therefore, the number of phosphorus atoms is 2 × 8.80 × 6.022 x 10²³ = 1.06 x 10²⁵ atoms of phosphorus.

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Melting point is the property of the wax and the sulfur should be investigated to provide evidence of the relative strengths of their intermolecular forces. Therefore, the correct option is option D.

The electrical forces of attraction and repulsion that act between atoms along with other types of nearby particles, such as atoms or ions, are examples of intermolecular forces (IMFs), also known as secondary forces. In comparison to intramolecular forces, which bind a molecule together, intermolecular forces are weak.

For instance, the forces between adjacent molecules are substantially weaker than the covalent bond, which involves sharing pairs of electrons between atoms. Both types of forces are crucial components of the force fields that molecular mechanics typically use. Melting point is the property of the wax and the sulfur should be investigated to provide evidence of the relative strengths of their intermolecular forces.

Therefore, the correct option is option D.

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Answer:

Its the level of reactivity a metal has to other elements.

Explanation:

while zinc is an important mineral with numerous functions in the body, it is not true that grains are the most reliable food source of zinc. A balanced diet that includes a variety of foods can provide adequate zinc intake for most people.

How to solve the problem?

The statement that is NOT true of zinc is "Grains are the most reliable food sources of zinc." While grains can be a source of zinc, they are not necessarily the most reliable source.

Zinc is an essential mineral that plays important roles in many biological processes, including immune function, protein synthesis, wound healing, and DNA synthesis. It is involved in various enzymatic reactions, and acts as a cofactor for many enzymes. Zinc is also important for proper growth and development, especially during childhood and adolescence.

Excess zinc intake can lead to decreased copper absorption, as both minerals compete for absorption in the intestines. This can lead to copper deficiency, which can cause anemia neutropenia, and other health problems. Therefore, it is important to maintain a balance between zinc and copper intake.

While grains can be a source of zinc, other foods such as meat, seafood, and dairy products are also good sources. Vegetarians and vegans may need to pay particular attention to their zinc intake, as plant-based sources of zinc may be less bioavailable than -based sources. Zinc supplements can also be used to prevent or treat deficiencies, but should be used with caution as excessive intake can have negative health effects.

In summary, while zinc is an important mineral with numerous functions in the body, it is not true that grains are the most reliable food source of zinc. A balanced diet that includes a variety of foods can provide adequate zinc intake for most people.

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Explanation:

Calculation:

The pH of a solution is calculated by the formula:

p

H

=

−

log

[

H

+

]

Now the dissociation reaction of HCl is:

(

0.1

M

)

H

C

l

→

(

0.1

M

)

H

+

+

(

0.1

M

)

C

l

−

Here one mole of HCl gives one mole of hydrogen ions. Therefore, the concentration of

H

+

ion is the same as the concentration of HCl, given that is 0.1 M.

Now substitute this value in the formula:

p

H

=

−

log

[

H

+

]

=

−

log

(

0.1

)

=

1

Answer:

D)

Explanation:

A tendon is a fibrous connective tissue that attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball

Answer:

The limiting reagents seemed to be those that were consumed first .

Because when this reagent is consumed, the reaction stops. The quantity of this determines the total quantity of the product formed.

Explanation:

A limiting reagent is one that is consumed in its entirety. In this way, it delimits the amount of product that can be formed.

Take the case of two substances that interact and produce a chemical reaction. If one of the substances runs out as it is consumed during the process, the reaction will stop. The reagent consumed acts as a limiting reagent, that is, it limits the possibility of the reaction proceeding, and therefore it also limits the amount of the product generated by the reaction.

The gravimetric factor for Br- using silver bromide is 0.425.

The gravimetric factor is an expression that is used to convert grams of a compound into grams of a single element.

It is expressed as a ratio of the formula weight (FW) of the substance that is being determined to that of a second substance that is weighed.

For example formula of silver bromide is AgBr and the formula mass of silver bromide is 188 g/mol

Formula mass of bromide ion = 80 g/mol

Gravimetric factor = 80/1188

Gravimetric factor = 0.425

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Answer:

a. increase.

Explanation:

Hello!

In this case, according to the given information, it turns out possible for us to tell that the common ion effect decreases the solubility of the ionic solid by firstly increasing the concentration of the common ion, which is further solved for the solubility in order to evidence the aforementioned decrease.

As an example, we can consider the solubility equilibrium for silver chloride:

\(Ksp=[Ag^+][Cl^-]\)

Which goes to:

\(Ksp=s^2\)

Whereas s is the solubility to be solved for. However, when a silver- or chloride-containing solution is added, say 0.1 sodium chloride, the equilibrium expression changes to:

\(Ksp=(s)(s+0.1)\)

Which turns out into a smaller value for s.

Regards!

The vocabulary word from collision theory to what was happening at the pet adoption.

Reactants - The foster family with the pet and the adoptive family entering the park alone

Products - The adoptive family with their new pet and the foster family  petless

Collision theory says that for a chemical reaction to happen, the reactant molecules must come in contact with each other with enough energy and with all things being equal or in sync. The rate of the reaction is proportional to the number of collisions that occur.

The other answers are:

Temperature - More adoptions happen in the summer than in the winter.

Surface Area - The foster families started in a solid block, but decided to spread out in the park.

Concentration - Once the foster families spread out, they were able to invite more foster families to the event

Catalyst - The foster families and adoptive families would sit together at a picnic table to meet the pet and fill out paperwork.

Activated Complex - Meeting between foster families and adoptive families to meet the pet and fill out paperwork

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The flow rate of fuel from the pump is 0.25 liters/second.

To find the flow rate of fuel from the pump, we need to determine the volume of fuel that is dispensed per unit of time.

75 liters = 0.075 cubic meters

Mass = volume x density

Mass = 0.075 cubic meters x 680 kg/cubic meter

Mass = 51 kg

we can convert the time it takes to fill the tank from minutes to seconds:

5 minutes = 300 seconds

Finally, we can calculate the flow rate of fuel from the pump:

Flow rate = mass/time

Flow rate = 51 kg / 300 seconds

Flow rate = 0.17 kg/second

Since we know the relative density of the fuel is 0.68, we can convert the flow rate from kilograms to liters:

Flow rate = mass/density

Flow rate = 0.17 kg / 0.68 kg/liter

Flow rate = 0.25 liters/second

The flow rate of fuel from the pump is 0.25 liters/second.

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With a Ksp of 4.30*10−11 and a molar mass of 274 g / mol the solubility (in g / L) of the generic salt is mathematically given as

S=0.0604g/l

Generally, the Ksp   is mathematically given as

Ksp=4s^3

Therefore

s=(\frac{4.30 × 10−11}{4})^{1/3}

s=2.207×10^{−4]

In conclusion, solubility is

S=2.207×10^{−4]*274

S=0.0604g/l

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Answer:

Yes

Explanation:

Standardization is a process to determine the exact concentration of a substance. It helps to determine the molarity of a solution. NaOH is very high in hygroscopic properties and thus it absorbs a lot air from the environment. For this reason it cannot be weighted properly and if this is used for standardization the results may not be accurate.

Answer:

\(h=100.8cm\)

Explanation:

Hello,

In this case, considering the density and mass of both water and heptane we first compute the volume of each one:

\(V_{water}=\frac{m_{water}}{\rho _{water}}=\frac{34g}{1.00g/mL}=34mL\\ \\V_{heptane}=\frac{m_{heptane}}{\rho _{heptane}}=\frac{34.6g}{0.684g/mL}=50.6mL\\\)

Now, the total volume is:

\(V=50.6mL+34mL=84.6mL\)

Which is equal to:

\(V=84.6cm^3\)

Then, by knowing that the volume of a cylinder is πr²h or π(D/2)²h, we solve for the height as follows:

\(h=\frac{V}{\pi (D/2)^2} \\\\h=\frac{84.6cm^3}{\pi (3.16cm/2)^2} \\\\h=100.8cm\)

Best regards.

Answer:

all animals live on land

Explanation:

Answer:    World 5,306,425,000 6,895,889,000 7,503,828,180

1 China 1,139,060,000 1,341,335,000 1,384,688,986

2 India 873,785,000 1,224,614,000 1,296,834,042

3 United States 253,339,000 310,384,000 329,256,465

Explanation:

Density differences caused by temperature and salinity variations are fundamental drivers of ocean currents of seawater . Warm currents transport heat from the equator to higher latitudes, while cold currents transport cold water from higher latitudes to lower latitudes.

When seawater is heated, it expands and becomes less dense, causing it to rise. Conversely, when seawater cools, it contracts and becomes denser, causing it to sink. These density differences due to temperature variations create vertical movements in the ocean known as thermohaline circulation or convection currents. On the other hand, regions with high freshwater input from rivers or heavy precipitation have lower salinity, resulting in lower density. This lighter water tends to float on the denser seawater beneath it, leading to the formation of surface currents that transport water from areas of low salinity to areas of higher salinity. These ocean currents play a vital role in shaping global climate patterns and maintaining the balance of heat and nutrients in the ocean ecosystem.

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Answer:

92.4%

Explanation:

The volume per cubic meter of sodium preoccupy by the sodium ions is

\(V_{Na} = n \times V\)

where;

volume (V) of each Na atom   = \(\dfrac{ 4}{3} \pi r^3\)

Radius of each ion = 97.3 pm = 97.3 × 10⁻¹²

no.of atoms in the sample n =  mass of the sample / ( molar mass / NA)

mass of the sample per cubic metre =  911 kg/m³

∴

\(V = \bigg [ \dfrac{4}{3} \pi r^3 \bigg ] \bigg [\dfrac{MN_A}{m} \bigg ]\)

\(V = \bigg [ \dfrac{4}{3} \pi (97.3 \times 10^{-12} )^3 \bigg ] \bigg [\dfrac{ (911 kg/m^3 (m^3))(6.023\times 10^{23})}{27.7 \times10^{-3}\ kg/mol } \bigg ]\)

V = 0.07643 m³

The fraction of available conduction electrons are;

= (1 - V)

= 1 - 0.07643

= 0.92357

≅ 92.4%

Answer: -2

EXPLANATION

Valence refers to the number of electrons that an atom must borrow or lend to complete its outermost shell. An atom of oxygen wants to add two more electrons to complete its outer shell of eight electrons. Since doing so would result in the oxygen atom becoming negatively charged by accepting two more electrons, oxygen is said to have a valence -2  

                                                           -2

this is the answer

Reactions can occur because of a precipitation reaction

Double-Replacement reactions, happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product  

To predict whether this reaction can occur or not is one of them, the precipitation reaction. A precipitation reaction occurs if two ionic compounds which are dissolved reacted to produce one of the products of the ion compound does not dissolve. Formation of these precipitating compounds that cause reactions can occur  

Chloride solution reacts with Sodium carbonate solution

CaCl₂(aq)+Na₂CO₃(aq)⇒CaCO₃(s)+NaCl(aq)

Because Calcium carbonate, CaCO₃ an insoluble solid , it will precipitates so that a reaction can occur