Assume 0.42 L of a 0.95 M solution of nickel (II) chloride, NiCl2, reacts with a 1.5 M solution of sodium hydroxide, NaOH, to produce nickel (II) hydroxide, Ni(OH)2, and sodium chloride, NaCl. The problem requires that you determine the volume of sodium hydroxide, NaOH, needed for the reaction to occur.

NiCl2(aq) + 2 NaOH(aq) → Ni(OH)2(s) + 2 NaCl(aq)

Explanation:

this equation is balanced

if you look at it carefully

k=1

f=1

o=2

we do not have any opposing element

Answer:

this equation is balanced

if you look at it carefully

k=1

f=1

o=2

we do not have any opposing element

Answer:LOL

42

Explanation:

The mass of a single potassium atom is 6.50×10⁻²³ grams potassium atoms would be in 114 milligrams of potassium 17.53 ×10⁻²³.

An atom is the most diminutive form of any chemical compound that takes part in the chemical reaction to form any product and it is equal to the one mole which is 2.303 ×10²³ moles of the Avogadros number.

To calculate the number of atoms we have,  6.50×10⁻²³ grams of potassium and the value of one particle is 2.303 ×10²³ moles,

           atoms =   6.50×10⁻²³  / 114 milligrams of potassium

          atoms of potassium = 17.53 ×10⁻²³. atoms.

Therefore, 17.53 ×10⁻²³.atoms are present if the mass of a single potassium atom is 6.50×10⁻²³ grams potassium atoms would there be in 114 milligrams of potassium.

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Answer:

Without taking body measurements, the fabric material can run out of supply if the tailor uses it too much. And more material is required to fix small dresses or suits. So when body measurements are taken accurately, the tailor will know the exact amount of material to be used.

Explanation:

Look at my screenshot:

Answer:

H⁺(aq) + NO₃⁻(aq) + Na⁺(aq) + OH⁻(aq) → Na⁺(aq) + NO₃⁻(aq) + H₂O(l)

Explanation:

First, we will write the molecular equation for the neutralization reaction between nitric acid and sodium hydroxide.

HNO₃(aq) + NaOH(aq) → NaNO₃(aq) + H₂O(l)

The total ionic equation includes all the ions and the molecular species.

H⁺(aq) + NO₃⁻(aq) + Na⁺(aq) + OH⁻(aq) → Na⁺(aq) + NO₃⁻(aq) + H₂O(l)

The balanced equation for the reaction is as follows:

3 AI2O3 (s) + 3C (s) + 2CI2 (g) → 3AICI3 (s) + 3CO (g)

Combination reactions happen when two or more reactants come together to create a single product. In this instance, the reactants are chlorine gas, carbon, and aluminium oxide (AI2O3) (CI2). Aluminum chloride (AICI3) and carbon monoxide make up the final product (CO). Exothermic means that energy is released when the reactants come together in this reaction. Both heat and light are manifestations of this energy. The bonds between the atoms in the reactants are broken and new bonds between the atoms in the product are formed when the reactants combine. The reaction is exothermic because of the energy released during this process.

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The genetic variations in the bird population can lead to differences in behavior, physiology and morphology which can impact birds' survival and reproductive success.

In the population of bird species, there may be genetic variations such as difference in feather color, beak size and shape, and wing shape. Some birds may have brown feathers and others may have black or white feathers.

Beak size and shape may vary, with some birds having longer or shorter beaks, and some having curved or straight beaks. Wing shapes may also differ with some birds having longer, narrower wings and others having shorter and wider wings.

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Answer: a. new

Explanation:

The time between one full moon to another is new moon. The lunation is the average time taken for the formation of new moon to the next. The new moon is the initial visible crescent of the Moon after being conjugated with the Sun. Per lunar cycle can be assigned with a lunation number for the purpose of identification.

The correct procedure is number 1. Dissolve 60g of K3PO4 in 3.0l of water.

Dissolve is a term used in film and photography to refer to the gradual transition from one image to another. It is used to create a smooth, gradual transition from one scene to the next, and can be used to create a sense of continuity and flow in a story. Dissolves are often used to transition between scenes or time periods, and can be used to create different emotional effects depending on the type of dissolve used. Dissolves can be used to create a feeling of anticipation or suspense, or to create a sense of calmness or relaxation. They can also be used to illustrate the passage of time, or to show the transition between two different points of view.

Dissolve 60g of K3PO4 in 3.0l of water, Measure out 600ml of water and add 30g of K3PO4, Measure out 30g of K3PO4 and add 3.0l of water.

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Answer: 0.85 hertz

Explanation: Calculator said so also 0.85 is decimal form for 85

Answer:

integumentary system

Explanation:

The integumentary system reduces water loss, contains receptors that respond to touch, regulates body temperature, and protects the inside of the body from damage. Receptors in skin send sensory information to the brain.

Answer:

Integumentary system

Explanation:

The integumentary system is the largest organ of the body, equaling 15-20% of our total body mass. It acts as a barrier to physical, chemical, and biological agents. The skin prevents water loss and regulates body temperature

Orbitals

Explanation:

Electrons are found in different levels  or orbitals  surrounding the nucleus. The electrons can be found at any point in their orbital.

Hope this helped!!!

Answer:

shells or orbitalsthat

Explanation:

Answer: 2 SO2 (g) + O2 (g) Kp = 7.69 If a vessel at this temperature initially ... and if the partial pressure of sulfur trioxide at equilibrium is 0.100 atm,

Explanation:

As sulfur dioxide has an equilibrium partial pressure of 0.100 atm. Hence, the partial pressure of O\(_2\) will be half of 0.100 atm, it is 0.05 atm.

Each gas that makes up a mixture of gases has a partial pressure, which would be the notional pressure of that gas as if it alone filled the original combination's complete volume at the same temperature. 

The thermodynamic activity of a gas's molecules is gauged by its partial pressure. Gases react, disperse, and dissolve based on their partial pressures rather than the concentrations they have in liquids or other gas combinations.

2 SO\(_2\) (g) + O\(_2\) (g) → SO\(_3\) Kp = 7.69

As sulfur dioxide has an equilibrium partial pressure of 0.100 atm. Hence, the partial pressure of O\(_2\) will be half of 0.100 atm, it is 0.05 atm.

Therefore, 0.05 atm is the partial pressure of O\(_2\) .

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The specific heat capacity of the zinc metal, given that 2.40×10¹ g of zinc metal at 2.10×10¹ °C is added to the water is 0.27 J/gºC

First, we shall obtain the heat absorbed by the water when the zinc metal was added. This is shown below:

Q = MCΔT

= 5.60×10¹ × 4.184 × -2.1

= -492.0384 J

Now, we shall determine the specific heat capacity of the zinc metal. Details below:

Q = MCΔT

492.0384 = 2.40×10¹ × C × 76

492.0384 = 1824 × C

Divide both sides by 1824

C = 492.0384 / 1824

= 0.27 J/gºC

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The mass, in grams of 1.16 mole of water, H₂O is 20.88 g

The mole of a substance is related to it's mass and molar mass according to the following equation

Mole = mass / molar mass

With the above formula, we can obtain the mass of H₂O

From the question given above, the following data were obtained:

The mass of 1.16 mole of water can be obtained as illustrated below:

Mole = mass / molar mass

Cross multiply

Mass = mole × molar mass

Mass of H₂O = 1.16 × 18

Mass of H₂O = 20.88 g

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Answer:

The problem provides you with the solubility of potassium chloride,

KCl

, in water at

20

∘

C

, which is said to be equal to

34 g / 100 g H

2

O

.

This means that at

20

∘

C

, a saturated solution of potassium chloride will contain

34 g

of dissolved salt for every

100 g

of water.

As you know, a saturated solution is a solution that holds the maximum amount of dissolved salt. Adding more solid to a saturated solution will cause the solid to remain undissolved.

In your case, you can create a saturated solution of potassium chloride by dissolving

34 g

of salt in

100 g

of water at

20

∘

C

.

Now, your goal here is to figure out how much potassium chloride can be dissolved in

300 g

of water at this temperature. To do that, use the given solubility as a conversion factor to take you from grams of salt to grams of water

Answer:

Computers are more useful for quick calculations.

Computers are easier to transport to remote locations.

Computers have lower power consumption.

Computers hold larger amounts of data.

give brainliest pls

The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

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Answer:

C.) protons and neutrons

Explanation:

Most atoms contain proton(s), neutron(s), and electron(s). Within the nucleus of an atom, there are protons and neutrons. Electrons are located outside of the nucleus.

The difference between repetition and replication include the following:

This involves the process of copying or duplicating something from a source material and the result is usually the same.

On the other hand repetition refers to performing activities multiple times and doesn't involve duplication which is why the results gotten may be different depending on the conditions involved.

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The quantum numbers for the very last electron in Cadmium (Cd) atom is  (5, 0, 0, ±¹/₂) for the four quantum numbers.

Quantum numbers are the set of numbers used to express the location and energy of an electron in an atom.

There are four quantum numbers used to describe the location and energy of an electron in an atom, and they are:

The electronic configuration of cadmium is  [Kr]4d¹⁰5s².

Hence, cadmium belongs to period 5 of the periodic table, and the last electron occupies the 5s orbital.

The l value of the s orbital is 0, and mi is 0 as well.

The value of ms is ±¹/₂.

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The grams of magnesium hydroxide needed to yield 8.00 moles of magnesium chlorate is approximately 466.64 g. None of the options provided match the calculated value of 466.64 g.

To determine the grams of magnesium hydroxide (Mg(OH)2) needed to yield 8.00 moles of magnesium chlorate (Mg(ClO3)2), we need to consider the balanced chemical equation for the reaction between magnesium hydroxide and chlorine.

The balanced equation is as follows:

2 Mg(OH)2 + 6 Cl2 → 2 Mg(ClO3)2 + 2 H2O

From the balanced equation, we can see that 2 moles of Mg(OH)2 react with 6 moles of Cl2 to produce 2 moles of Mg(ClO3)2.

Therefore, the stoichiometric ratio is 2 moles of Mg(OH)2 : 2 moles of Mg(ClO3)2.

To calculate the grams of Mg(OH)2 needed, we can use the stoichiometric ratio and the given moles of Mg(ClO3)2.

Given:

Moles of Mg(ClO3)2 = 8.00 moles

Using the stoichiometric ratio, we have:

8.00 moles Mg(ClO3)2 × (2 moles Mg(OH)2 / 2 moles Mg(ClO3)2) = 8.00 moles Mg(OH)2

To convert moles to grams, we need to multiply by the molar mass of Mg(OH)2.

The molar mass of Mg(OH)2 = (24.31 g/mol) + (2 * 16.00 g/mol) = 58.33 g/mol

Grams of Mg(OH)2 = 8.00 moles Mg(OH)2 × 58.33 g/mol = 466.64 g

Therefore, the grams of magnesium hydroxide needed to yield 8.00 moles of magnesium chlorate is approximately 466.64 g.

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Answer:

Joule

Explanation:

Answer:

The calorie

Explanation: as the amount of thermal energy necessary to raise the temperature of one gram

The SI unit to the quantity it measures are:

Mass: The mass of an object is a measure of its amount of matter. The SI unit of mass is the kilogram (kg) or gram (g).

Temperature: Temperature is a measure of the average kinetic energy of the particles in a substance. The SI unit of temperature is the kelvin (K).

Time: Time is a measure of the interval between two events. The SI unit of time is the second (s).

Electric current: Electric current is a measure of the flow of electric charge. The SI unit of electric current is the ampere (A).

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Complete question:

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.

Match each SI unit to the quantity it measures.

Answer:

140 T or thymine base

Explanation:

Adenine pairs with Thymine in DNA thus the number of adenine will always equal number of thymine (unless some sort of mutation), therefore in this problem you have 140 A so you have 140 T as well. Remember: Adenine (A) and Thymine(T) is equal, & Cytosine (C) and Guanine (G) is equal

Answer:

You need to add 0.243g of NaOH to raise the temperature back to 16.2°C

Explanation:

Using the equation:

Q = C*m*ΔT

Where Q is heat

C is specific heat

m is mass

and ΔT is change in temperature

We can find the heat required to increase the temperature of the solution back to 16.2°C:

Assuming specific heat of the solution of water + K2SO4 = Specific heat of water:

C = 4.184J/g°C

m = 1.56g + 6.00g = 7.56g

ΔT = 16.2°C - 7.70°C = 8.50°C

Q = 4.184J/g°C * 7.56g * 8.50°C

Q = 268.86J = 0.269kJ of heat are required

As this heat is obtained from the dissolution of NaOH:

0.269kJ * (1mol NaOH / 44.3kJ) = 0.00607 moles of NaOH are required

In grams -Molar mass NaOH: 40g/mol-:

0.00607 moles NaOH * (40g / mol) =

Answer:

It's A., thats conduction and its a heat transfer

Explanation: