How does the water cycle contribute to the "brown ocean" effect?

Answer:

A will float on top of B.

Explanation:

B is more dense. example A is oil and B is water.

Answer:

The one that burned longer because it burned longer

Explanation:

Answer:

Explanation:

Here, we want to select the balance used to measure mass to a hundredth accuracy

The kind of balance used in this case is the centigram balance. The measure the mass of a substance to an accuracy of a hundredth which is 0.01g

From the specific heat capacity of mercury, the amount of heat energy required to raise the temperature of 4.0 g of mercury metal from 9.3 °C to 83.0 °C is 77.792 J.

The specific heat capacity of a substance is the amount of heat required to raise the temperature of a unit mass of the substance by one degree Celsius or kelvin.

The specific heat capacity of a substance is a constant that can be used to calculate the amount of heat required to raise the temperature of a given mass of a substance to any temperature.

The specific heat capacity of mercury is 0.140 J/g/k.

The formula for calculating specific heat capacity is given below:

Specific heat capacity, c = Δq/mΔT

where;

Δq = heat change

m = mass of the substance

ΔT = temperature change

The Heat required, Δq, will then be:

Δq = m * c * ΔT

Heat required, Δq = 4.0 * 0.140 * (83.0 - 9.3)

Heat required, Δq = 77.792 J

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Answer:

Sodium Chloride has Ionic bond while Hydrogen Chloride has covalent bond.

Explanation:

Na has 11 electrons (2, 8, 1) and need to give away 1 electron to be stable

Cl has 17 electrons ( 2, 8, 7) and needs 1 electron to be stable.

Na transfers 1 electron to CL to form Ionic bond.

While

Hydrogen has 1 electron and shares with Chlorine to be stable.

Covalent bond involves sharing.

Chlorine reacts with sodium to form ionic sodium chloride while chlorine reacts with hydrogen to form covalent hydrogen chloride.

The nature of bonding between atoms depends on their relative difference in electronegativity.

Chemical bonding is the process by which atoms come together to form compounds.

There are different kinds of chemical bonds;

An ionic bond is formed when there is high electronegativity difference between the bonding atoms. Typically, this type of bond is formed when the electronegativity difference is about 2.0 and above.

For a covalent bond, an electronegativity difference of about 0.4 - 1.7 is considered a polar covalent bond. Lower values of electronegativity difference corresponds to a nonpolar bond.

The electronegativity difference between sodium and chlorine is about 2.23. This corresponds to a pure ionic bond. The compound is composed of chlorine and sodium ion pairs alternately located in a crystal lattice as shown in the image attached.

The  electronegativity difference between chlorine and hydrogen is about 0.96. This corresponds to a polar covalent bond. The negative end of the dipole points towards chlorine while the positive end of the dipole points towards hydrogen.

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Answer:

Be2^+

Explanation:

Ionic diameter increases down the group. This implies that Be2^+ will have the smallest diameter.

This extremely small diameter makes Be2^+ to differ considerably from other ions of group 2 elements.

For instance, the compounds of beryllium are mostly covalent in nature.

The prefix "deci" is used to express one tenth of the unit of any measurement. For example decimeter is the one tenth of the one meter length.

Metric system is a n international system of units. Under the direction of an international standards body, the historical evolution of these systems culminated in the definition of the International System of Units (SI) in the middle of the 20th century. Metrication is the process of converting to the metric system.

There are many prefix that indicates the exact measurement of a variable under different situations. There are prefix like, centi, deci, micro, milli etc. The prefix deci is used to express one tenth (1/10) of the unit.

One decimeter is one tenth of 1 m. That is 10⁻¹ m. Similarly we can use the prefix deci to other variables such as deciliter, decigram etc. Usually used to express small length in metric system.

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Answer:

hgvghhshshh3hrurudus

Answer:

For completely converting 6.34 moles of hydrogen to ammonia, 2.11 moles of Nitrogen is required.

The chemical reaction for the formation of ammonia by nitrogen and hydrogen reaction has been as follows:

For the formation of 2 moles of ammonia, 3 moles of hydrogen, and 1 mole of nitrogen s required.

The utilization of 3 moles of hydrogen requires 1 mole of Nitrogen.

So, the utilization of 6.34 moles of hydrogen requires:

3 moles Hydrogen = 1 -mole Nitrogen

6.34 moles hydrogen =  moles of Nitrogen

6.34 moles of hydrogen requires = 2.11 moles of Nitrogen.

For completely converting 6.34 moles of hydrogen to ammonia, 2.11 moles of Nitrogen is required.

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The formula for Co3+ is Co3+ because it represents the ion of cobalt that has lost three electrons, leaving it with a 3+ charge.

What is chemical formula and how they are formed ?

A chemical formula is a symbolic representation of a chemical compound that shows the types of elements present in the compound and the relative number of atoms of each element. For example, the chemical formula for water is H2O, which indicates that it is made up of two hydrogen atoms and one oxygen atom.

Chemical formulas are formed by identifying the elements that make up a compound and determining the relative number of each element in the compound. The number of each element is represented by a subscript following the chemical symbol of the element. For example, the chemical formula for methane is CH4, which indicates that there is one carbon atom and four hydrogen atoms in each molecule of methane.

The formula for Se2- is Se2- because it represents the ion of selenium that has gained two electrons, giving it a 2- charge.

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Hello. You did not show the pairs of compounds to which the question refers, which makes it impossible for them to be classified as enantiomers or diastereomers. However, I will try to help you in the best possible way.

To find out if the compounds are enantiomers or diastereomers, you must evaluate their structure in relation to each other. This is because enantiomers, will be the pairs of compounds that have very similar structures, reaching the point of looking like mirrored structures of each other, but they cannot overlap. On the other hand, diastereomers are neither able to overlap, nor have such similar structures.

Answer:

a. 13.0g/L is the concentration of SO2Cl2 after 3.00h

b. FALSE

Explanation:

The first order reaction follows the equation:

ln[SO2Cl2] = -kt + ln[SO2Cl2]₀

Where [] is the concentration after time t, k is rate constant = 1.42x10⁻⁴s⁻¹

[]₀ is initial concentration:

a. []₀ = 75.6g/1.25L = 60.48g/L

t in seconds: 3h * (3600s / 1h) = 10800s

Replacing:

ln[SO2Cl2] = -1.42x10⁻⁴s⁻¹*10800s + ln[60.48g/L]₀

ln[SO2Cl2] = 2.5687

[SO2Cl2] = 13.0g/L is the concentration of SO2Cl2 after 3.00h

b. The rate constant of a reaction remains constant if temeprature remains constant.

Answer: D

Explanation:

The personal data are transmitted using digital signals. The data might be stolen or accessed by hackers to go wrong with these transmissions. Therefore, option D is correct.

A digital signal is one that can only ever take on one of a few discrete values at any given time. It represents data as a sequence of discrete values.

A continuous signal that represents physical measurements is an analog signal. Digital modulation is used to create time-separated signals known as digital signals. Sine waves serve as its signal. The square waves serve as a marker.

It makes use of a continuous range of values to aid in the representation of data. Digital technologies are any techniques, systems, equipment, or resources that produce, store, or process data electronically.

Thus, option D is correct.

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The balanced equation will be \(2NH_3 + 3I_2 -- > N_2I_6 + 3H_2\)

They are chemical equations that obey the law of conservation of atoms.

In other words, they are equations in which the number of atoms before and after reactions are the same.

Thus, the balanced equation for the reaction will be \(2NH_3 + 3I_2 -- > N_2I_6 + 3H_2\)

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Answer:

Density of the solid is 1.63g/mL

Explanation:

Hello,

Data;

Mass of solid = 32.65g

Mass of toluene = ?

Mass of solid + toluene = 58.58g

Density of toluene = 0.864g/mL

Mass of toluene = (mass of solid + toluene) - mass of solid

Mass of toluene = 58.58 - 32.65

Mass of toluene = 25.93g

But density = mass / volume

Density of toluene = mass of toluene / volume of toluene

Volume of toluene = mass of toluene / density of toluene

Volume of toluene = 25.93 / 0.864

Volume of toluene = 30.01mL

Volume of solid = total volume of the mixture (solid + toluene) - volume of toluene

Volume of solid = 50 - 30.01

Volume of solid = 19.99mL

Density of the solid = mass of solid / volume of solid

Density of the solid = 32.65 / 19.99

Density of the solid = 1.63g/mL

Therefore the density of the solid is 1.63g/mL

Answer:

(a) 4p: ml = -3, -2, -1, 0, +1, +2, +3

(b) 3d: ml = -2, -1, 0, +1, +2

(c) 2s: ml = -1, 0, +1

(d) 5p: ml = -4, -3, -2, -1, 0, +1, +2, +3, +4

Explanation:

Manetic quantum numbers determine the spatial orientation and number of orbitals in the subshell. ml is from -l to +l.

The maximum mass of water that could be produced by the chemical reaction is 162 g.

The given chemical equation is: 2 C8H18(l) + 25 O2(g) → 16 CO2(g) + 18 H2O(l)In the chemical reaction of liquid octane with gaseous oxygen, the products are gaseous carbon dioxide and gaseous water.According to the balanced chemical equation, 2 moles of C8H18 react with 25 moles of O2 to form 18 moles of H2O.So, 1 mole of C8H18 react with 25/2 = 12.5 moles of O2 to form 9 moles of H2O.The molar mass of C8H18 is 114 g/mol. So, the number of moles in 17 g of C8H18 is:17 g / 114 g/mol = 0.149 molThe molar mass of O2 is 32 g/mol. So, the number of moles in 112 g of O2 is:112 g / 32 g/mol = 3.5 molFrom the balanced chemical equation, 1 mole of C8H18 react with 12.5 moles of O2 to form 9 moles of H2O.So, the number of moles of O2 required to react with 0.149 mol of C8H18 to form H2O is:(12.5 mol / 1 mol) × (0.149 mol / 2 mol) = 0.935 molThe maximum number of moles of H2O that can be produced from 0.149 mol of C8H18 and 0.935 mol of O2 is 9 mol.So, the mass of water produced from 17 g of C8H18 and 112 g of O2 is:9 mol × 18 g/mol = 162 g

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a)There are 0.45 moles of HNO₃ in the bottle.

b)Approximately 13 ml of the solution are required for the reaction.

a. To find the number of moles of HNO₃  in the bottle, we can use the formula:

moles = concentration (M) x volume (L)

Given that the concentration of the nitric acid solution is 6.0 M and the volume is 75.0 ml, we need to convert the volume to liters:

75.0 ml = 75.0 ml x (1 L/1000 ml) = 0.075 L

Now, we can calculate the number of moles:

moles = 6.0 M x 0.075 L = 0.45 moles

So, there are 0.45 moles of HNO₃  in the bottle.

b. To determine the volume of solution required for 5.00 g of HNO3, we need to use the molar mass of HNO3 to convert grams to moles:

moles = mass (g) / molar mass (g/mol)

Given that the molar mass of HNO₃  is 63.01 g/mol and the mass required is 5.00 g, we can calculate the number of moles:

moles = 5.00 g / 63.01 g/mol ≈ 0.079 moles

Now, we can use the concentration to find the volume:

volume (L) = moles / concentration (M)

volume (L) = 0.079 moles / 6.0 M ≈ 0.013 L

Finally, we need to convert the volume to milliliters:

volume (ml) = 0.013 L x (1000 ml/1 L) ≈ 13 ml

So, approximately 13 ml of the solution are required for the reaction.

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Answer:

Nitrogen - 10

Explanation:

7 Protons and 7 electrons = neutral charge

7 Protons = Element N (Nitrogen)

Atomic Mass = # of Protons + # of Neutrons

Atomic Mass = 7 + 3

Atomic Mass = 10

Nitrogen - 10

The difference between the products point on the reaction profile and the energy of the reactants is the reaction's activation energy. The change is negative

The energy change between the reactants and the products can be seen in a potential energy diagram or reaction profile.

When we examine the reaction profile, we see that the energy difference between the reactants and products indicates that the process is endothermic. Enthalpy is calculated by deducting the energy of the reactants from the energy of the products.

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Answer:

6,500 gm of steam require= 3,510 kilo calories (approx)

Explanation:

Every 1 gram of water at 100° C  absorb 540 calories

So,

Total water = 6.5 kg = 6,500 gram

So,

6,500 gm of steam require = 6,500 x 540

6,500 gm of steam require= 3,510 kilo calories (approx)

According to the question,

Total water,

Temperature,

Now,

Required steam will be:

= \(6500\times 540\)

= \(3510 \ kilo \ calories\)

Thus the above answer is right.

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The proper name of the compound is now 1,1 - dihydroxy-3-phenyl propene.

Firstly we know that the parent chain is based on propane. Now we have three substituents on that parent chain. Two hydroxy moieties and one phenyl moiety.

The proper name of the compound is now 1,1 - dihydroxy-3-phenyl propene.

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Answer:

See attached picture.

Explanation:

Hello,

In this case, the E-Z nomenclature for alkenes is also related with the trans-cis ones, being the Z (zusammen) same as cis and E (entgegen) same as trans, therefore, for the structure of the (E)-2-butenal which has the double bond at the second carbon is shown on the attached picture considering it is an aldehyde with the carbonyl group due to the -al- suffix.

Regards.

Answer:

A. non fiction or a ajami to download

Answer:

The answer would be work with.

Explanation:

Because, if we know what the word interact means then we can look for a word similar to interact. hope this makes sense <3.

Answer:

In a climatological sense, dryness is a function of both annual rainfall and evaporation

Answer:

B.

Explanation:

Hope this helps.