a current of 3.37 a is passed through a ni(no3)2 solution for 1.50 h . how much nickel is plated out of the solution?

Answer:

organism 1

Explanation:

the arrow points away from it so that means that it is being eaten and it always starts from a producer so organism 1 is likely a producer :)  

Answer:

B- why or how because any scientist deals with matter it's relationships ,properties and its composition which can be inferred from the questions why and how

Answer: mass m = M·c·V

Explanation: M(CaCl2) = 110.98 g/mol, c= 0.15 mol/l,

n=m/M= cV, volume of Solution is not mentioned

If water had its highest density at 0°C instead of 4°C, it would mean that ice would be denser than liquid water. This would have a number of implications for life in water.

When water reaches its highest density, the temperature is 4°C, but if water were to reach its highest density at 0°C, it would have been problematic for life in water since the water would have frozen from the bottom to the top due to its density.

Therefore, if water had its highest density at 0°C, it would have a number of negative implications for life in water. It would make it more difficult for fish, plants, and humans to survive in cold water, which could lead to decreased biodiversity and increased mortality rates.

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A. Calcium (Ca) has 2 valence electrons, B. Oxygen (O) has 6, C. Element 117 specific valence electrons are not well-established yet, D. Indium (In) has 3, E. Argon (Ar) has 8, F. Bismuth (Bi) has 5.

Valence electrons are the electrons located in the outermost shell of an atom. They play a crucial role in chemical reactions as they are involved in the formation of chemical bonds. The number and specific valence electrons for each element are determined by its atomic structure. The periodic table is a useful tool for identifying the number of valence electrons for each element, as elements in the same group share similar valence electron configurations. For example, elements in group 1 have one valence electron, elements in group 2 have two valence electrons, and so on. Understanding the valence electrons and their distribution can help chemists predict the behavior of elements and their compounds in chemical reactions.

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(complete question)

How many valence electrons do each of the following elements have, and what are the specific valence electrons for each element? A. Ca B. O C. element 117 D. In E. Ar F. Bi

Answer:

protease is an enzyme

Explanation:

It hydrolyse peptide bonds of proteins and also called proteolytic enzymes.

Answer:

tabla periodica 6

Explanation:

.....

Answer:

Explanation:

????? i am having trouble according this

Compounds can be categorized as exhibiting either ionic bonding or covalent bonding. Ionic bonding occurs when there is a transfer of electrons from one atom to another, resulting in ions with opposite charges being attracted to each other and forming a bond.

In contrast, covalent bonding occurs when atoms share electrons to fill their outermost electron shells and form a stable molecule. To determine whether a compound exhibits ionic or covalent bonding, one can consider the electronegativity difference between the atoms involved in the bond. If the electronegativity difference is large greater than 1.7, the bond is considered ionic.

If the electronegativity difference is small less than 1.7, the bond is considered covalent. For example, NaCl sodium chloride exhibits ionic bonding because the electronegativity difference between sodium and chlorine is 2.1, which is greater than 1.7. In contrast, H2O (water) exhibits covalent bonding because the electronegativity difference between hydrogen and oxygen is 1.4, which is less than 1.7.

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Actually, no. While their mass may be the same (1kg), the volume of lead is a lot smaller than that of feathers. As there is the same mass stuffed in a smaller space, it must be denser. The density of water is 1 g/cm3, so if the density of the lead is more than 1g/cm3, it has to sink

The weight of potassium hydrogen phthalate that will require 40.0 ml of a 0.100 m NaOH solution to reach the equivalence point is 0.8169 grams.

In order to find out the weight of potassium hydrogen phthalate that will require 40.0 ml of a 0.100 m NaOH solution to reach the equivalence point, we can use the following formula: weight of KHP = (molarity of NaOH) x (volume of NaOH) x (molar mass of KHP) / 1000

First, we need to calculate the number of moles of NaOH required to reach the equivalence point: Moles of NaOH = (molarity of NaOH) x (volume of NaOH) / 1000 Moles of NaOH = (0.100 mol/L) x (40.0 mL) / 1000 Moles of NaOH = 0.004 mol.

Now we can use the number of moles of NaOH to calculate the weight of KHP required: Weight of KHP = (0.004 mol) x (204.22 g/mol), Weight of KHP = 0.8169 g. Therefore, the weight of potassium hydrogen phthalate that will require 40.0 ml of a 0.100 m NaOH solution to reach the equivalence point is 0.8169 grams.

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They cannot be divided and still keep the properties of the element; option D.

The elephant have the greatest mass; option A

Atoms are the smallest particle of an element that can take part in a chemical reaction.

Atoms of the same element have the same atomic number or the same number of protons.

Atoms of elements cannot be divided and still keep the properties of the element.

The atoms of calcium, gold, argon, iodine will have the following features in common: they cannot be divided and still keep the properties of the element; option D.

Mass of a substance is the amount of matter present in that substance.

The elephant will have the greatest mass of the other animals.

In conclusion, atoms are the smallest particle of a substance that can take part in a reaction.

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The equilibrium constant K is 17.78 × 10²⁷ at 255 K for the following reaction under acidic conditions.

4H⁺ (aq) + MnO₂ (s) + 2Fe⁺² (aq) → Mn⁺² (aq) + 2Fe⁺³ (aq) + 2H₂O (l)

The relation between standard electrode potential and equilibrium constant is as follows:

G = -2.303 RT log K

-nFE° = -2.303 RT logK

\(\log K = \frac{nFE^{\circ}_{\text{cell}}}{2.303RT}\)

Here,

n = 2

F = 96500

\(E^{\circ}_{\text{Cell}} = E^{\circ}_{\text{reduced}} - E^{\circ}_{\text{oxidized}}\)

        = 0.77 V - 1.51 V

        = -0.74 V

R = 8.314 J/K mole

T = 255 K

Now put the values in above formula we get

\(\log K = \frac{nFE^{\circ}_{\text{cell}}}{2.303RT}\)  

\(\log K = \frac{2 \times 96500 \times (-0.74)}{2.303 \times 8.314\ \text{J/K mole} \times 255\ K}\)  

\(\log K = \frac{-142820}{4882.521}\)

log K = 29.25

K = 17.78 × 10²⁷

The equilibrium constant K is 17.78 × 10²⁷ at 255 K for the following reaction under acidic conditions.

4H⁺ (aq) + MnO₂ (s) + 2Fe⁺² (aq) → Mn⁺² (aq) + 2Fe⁺³ (aq) + 2H₂O (l)

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Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Question: Use the appropriate standard reduction potentials below to determine the equilibrium constant at 255 K for the following reaction under acidic conditions.

4H⁺ (aq) + MnO₂ (s) + 2Fe⁺² (aq) → Mn⁺² (aq) + 2Fe⁺³ (aq) + 2H₂O (l)

The equation that relates equilibrium constants with cell potentials is

\(\log K = \frac{nFE^{\circ}_{\text{cell}}}{2.303RT}\)

Use this formula, along with the information in the appendix of your book to solve for K.  

Answer:

options 1, 3 & 4 are correct.

Explanation:

For the budget to maintain and improve his competence throughout his career, he will have to undertake professional development courses that will help to provide practical skills, by making the person very ready for the job at the completion of the course.

Also, by attending budgeting seminars to help gain more knowledge about the industry of budgeting.

Also by on the job training to help develop the effectiveness of the individual at his place of work and in turn help the growth of the organization.

Whereas academic bachelor's degree is to equip one with the basic knowledge of the profession.

Thus, options 1, 3 & 4 are correct.

Answer:

B i think

Explanation:

Answer:

livermorium

Explanation:

The atom with the largest number of neutrons is a tie between livermorium and tennessine. Each of these atoms contain 177 neutrons.

The statement that is false regarding the chemical grooming of pyruvate is "each pyruvate molecule has a CO2 added and then joins with an NADH.

Pyruvate is the end product of glycolysis that further undergoes chemical grooming in the presence of oxygen to produce ATP. The complete oxidation of glucose produces a total of 36-38 ATPs per molecule.

Pyruvate is oxidized to produce Acetyl-CoA. During this process, the carboxyl group of pyruvate is removed and given off as CO2. This is known as decarboxylation.

The remaining 2-carbon molecule is then oxidized by the removal of electrons by the NAD+ which is reduced to NADH. This is called oxidative decarboxylation, and its purpose is to prepare the substrate for energy production.

The correct statement regarding the chemical grooming of pyruvate is, "Each pyruvate molecule loses a CO2 molecule and then joins with a coenzyme A to form acetyl-CoA, producing an NADH molecule."

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Answer:

a

Explanation:

The heat capacity of a substance is the heat energy required to rise its temperature per one degree Celsius. Hence its unit is J/°C.

Heat capacity is the amount of heat energy required to raise the temperature of a substance by 1 degree Celsius or 1 Kelvin. It is expressed in the following units:

Joules per degree Celsius (J/°C)

Joules per Kelvin (J/K)

Calories per degree Celsius (cal/°C)

Calories per Kelvin (cal/K)

Joules per gram per degree Celsius (J/(g·°C))

Joules per gram per Kelvin (J/(g·K)) etc.

If in terms of simply the energy, then, The following units are used.

Joules (J) , Calories (cal) , Degrees Celsius (°C), Kelvin (K)

The choice of unit depends on the specific application and the system of units being used. The SI unit for heat capacity is J/K, while the traditional unit is cal/°C.

The use of per gram units is common in the context of specific heat capacity, which is the amount of heat energy required to raise the temperature of a unit mass of a substance by 1 degree Celsius or 1 Kelvin.

Therefore, here, the unit of heat capacity is J/°C.

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The total heat required to change 32.5 grams of liquid water into steam, from room temperature (25°C) to 115°C, is 79,604 J or 79.6 kJ.

To calculate the heat required to change 32.5 grams of liquid water into steam, from room temperature (25°C) to 115°C, we need to consider the different phase changes involved.

First, we need to calculate the heat required to raise the temperature of the liquid water from 25°C to 100°C. We can use the formula Q = mcΔT, where m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature. The specific heat capacity of water is 4.18 J/(g·°C).

Q = (32.5 g) × (4.18 J/g·°C) × (100°C - 25°C) = 5,585 J

Next, we need to calculate the heat required to change the liquid water into steam at 100°C. We can use the formula Q = mΔH, where ΔH is the enthalpy of vaporization of water, which is given as 2259 J/g.

Q = (32.5 g) × (2259 J/g) = 73,267.5 J

Finally, we need to calculate the heat required to raise the temperature of the steam from 100°C to 115°C. We can use the same formula as before, Q = mcΔT, but now c is the specific heat capacity of steam, which is 1.84 J/(g·°C).

Q = (32.5 g) × (1.84 J/g·°C) × (115°C - 100°C) = 751.5 J

Therefore, the total heat required to change 32.5 grams of liquid water into steam, from room temperature (25°C) to 115°C, is 79,604 J or 79.6 kJ.

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The higher ionization energy: K > Te > Ge. The larger size (atomic radius): Cs > Te > Se. Ionization energy is the energy required to remove an electron from an atom or ion in its gaseous state.

For each of the following pairs of elements, choose the one that correctly completes the following table:
K and Cs
Te and Br
Ge and Se
The more favorable (exothermic) electron affinity:
Br > Se > Cs
The higher ionization energy:
K > Te > Ge
The larger size (atomic radius):
Cs > Te > Se

Ionization energy is the energy required to remove an electron from an atom or ion in its gaseous state. The higher the ionization energy of an atom or ion, the more difficult it is to remove an electron from it.

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Answer:

microwaves

Explanation:

Microwaves and radio waves are the longest wavelengths while the shortest are gamma rays and x-rays

Answer:the second largest one

Explanation:

both weels are pushing at it

Based on the DNA sequences provided, Person A and Person C are more closely related.

To determine relation, compare the nucleotides at each position in the sequences.

At position 1, Person A and Person C both have "A" nucleotide, while Person B has "G" nucleotide.

At position 2, Person A has "T" nucleotide, Person B has "T" nucleotide, and Person C has "C" nucleotide.

At position 3, Person A and Person C both have "C" nucleotide, while Person B has "T" nucleotide.

Continuing this method for all places in the sequences reveals that Person A and Person C share more nucleotides than Person B. This shows that they are linked to each other more closely than to Person B.

In terms of concrete evidence for evolution, new dog breeds, drought-resistant crops, and more virulent viruses are all instances of microevolution at work.

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Answer:

waxing is in the evening and waning is in the morning if you cant see the moon in the evening it is waning if you can see it in the evening it is waxing

Answer:

Graphite is soft because it has weak inter molecular forces between its layers.

The ionic compounds are substances composed of positive and negative ions. Let's check which among the given compounds are ionic compounds NH4Cl.

This is an ionic compound. It is formed by the reaction between ammonium (NH4+) and chloride (Cl-) ions. SrO This is an ionic compound. It is made up of strontium (Sr2+) and oxide (O2-) ions. SO2 This is not an ionic compound. It is a molecular compound that consists of sulfur (S) and oxygen (O) atoms.

BrCl This is not an ionic compound. It is a molecular compound that contains bromine (Br) and chlorine (Cl) atoms. Therefore, the ionic compounds among the given compounds are a) NH4Cl and b) SrO.

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Answer:

b. 760 g

Explanation:

The mass of the solution = 800 g

5% of NaCl by mass of the solution can be determined as follows;

    5% of 800  =  \(\frac{5}{100}\) × 800

                       = 5 × 8

                       = 40 g

The mass of NaCl in the solution is 40 g.

The mass of water = mass of solution - mass of NaCl

                               = 800 - 40

                              = 760 g

Therefore, the mass of water required is 760 g.

Moles Fe₂O₃ produced : 1.16 moles

Given

2.32 moles of iron

Required

moles of Fe2O3

Solution

The reaction coefficient in a chemical equation shows the mole ratio of the reacting compounds (reactants and products)

Reaction

4 Fe + 3 O₂ ⇒  2 Fe₂O₃

From the equation, mol ratio Fe : mol Fe₂O₃ = 4 : 2, so mol Fe₂O₃ :

= 2/4 x mol Fe

= 2/4 x 2.32

= 1.16 moles