Ocean tides are caused by the___ attraction of the moon and sun.


Please help me. Asap

Answer:

C is the correct answer

Explanation:

Answer:

C) 2920 J

Explanation:

have a happy day please can I have the brainlist I have bin trying to get one for a WEEK PLZ PLZ PLZ!!!

Answer:

because battery have it's own voltage in it's composition

Answer:

A) Shaken is the correct answer

Explanation:

The other three don't fit in with the solution if you think about it. When you shake something with lemonade crystals (Like a lemonade flavor packet in poured in a water bottle) it dissolves faster when you shake it rather than it sit on the bottom for 15 minutes! :) .

Hope this helps! :)

Answer:

The Person above me is correct

Explanation:

I got it right first try 100%

Answer:

you pick it up with gloves and make minimal contact with it

Answer: The solid turns into liquid during melting.

Explanation:

a. The process of a solid turning into liquid is called melting. The solid ice turns into a liquid during the melting process. The solid molecules gain energy and flow as a liquid.

b. The energy of the molecules increases in the liquid state. When the ice turns into a liquid the energy of the molecules increases. The application of heat or excess temperature increases the energy of the molecules.

Answer:

72.66g of Fe2O3 are produced.

Explanation:

1st) From the balanced equation we know that 2 moles of Fe2O3 are produced from 4 moles of iron (Fe). With a mathematical rule of three we can calculate the moles of Fe2O3 that will be produced from 0.89 moles of iron:

Now we know that 0.455 moles of Fe2O3 are produced.

2nd) Now we have to convert 0.455 moles of Fe2O3 into grams, by using the molar mass of Fe2O3 (159.7g/mol):

So, 72.66g of Fe2O3 are produced.

Answer: i'd prolly say (e)

Explanation: if you ignore the letters and pay more attention to the symbols and numbers you can see that adding 18 to 2 makes 20 which is not an exponent and the 40 and 4 that are exponents put together makes 44 as dumb as it sounds it was a reasonable purpose behind it hope i did something

Answer:

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. Salts are also formed in this reaction.

Explanation:

Activated carbon, also known as charcoal, is commonly used in recrystallization because it is highly porous and has a large surface area that can effectively trap impurities.

This makes it an excellent adsorbent for organic contaminants, residual solvents, and other unwanted substances in the recrystallization solution. The addition of activated carbon to the solution prior to recrystallization helps to purify the desired compound and improve the overall yield of the reaction. Additionally, activated carbon is a highly effective filter that can remove any discoloration, odors, or other impurities that may be present in the solution. By improving the purity of the recrystallization solution, activated carbon can help to ensure that the final product is of a higher quality and has more consistent properties.

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By substituting Massgold +Masstitanium = 14.25 g, in the equation 276.6148 J = 0.129 J/g·°C * Massgold * 3.62 °C + 0.544 J/g·°C * Masstitanium * 3.62 °C, mass of each ring can be calculated by using the principle of heat transfer and apply the conservation of energy.

The heat lost by the rings is equal to the heat gained by the water.

Mass of gold ring + Mass of titanium ring = 14.25 g

Mass of water = 18.1 g

Initial temperature of water = 22.60 °C

Final temperature of water and rings = 26.22 °C

Density of water = 0.998 g/mL

Specific heat capacity of water (Cw) = 4.18 J/g·°C

Specific heat capacity of gold (Cg) = 0.129 J/g·°C

Specific heat capacity of titanium (Ct) = 0.544 J/g·°C

Step 1: Calculate the heat gained by the water:

Qwater = Cw * Masswater * ΔTw

Where ΔTw is the change in temperature of the water:

ΔTw = Final temperature - Initial temperature = 26.22 °C - 22.60 °C = 3.62 °C

Qwater = 4.18 J/g·°C * 18.1 g * 3.62 °C

Qwater = 276.6148 J

Step 2: Calculate the heat lost by the rings:

Qgold = Cg * Massgold * ΔTgold

Qtitanium = Ct * Masstitanium * ΔTtitanium

Since the gold and titanium rings are at the same temperature, their temperature change is the same:

ΔTgold = ΔTtitanium = ΔTw = 3.62 °C

Step 3: Set up the equation using the principle of heat transfer:

Qwater = Qgold + Qtitanium

276.6148 J = 0.129 J/g·°C * Massgold * 3.62 °C + 0.544 J/g·°C * Masstitanium * 3.62 °C

Step 4: Solve the equation to find the mass of each ring:

We have Massgold + Masstitanium = 14.25 g

Now we can solve the equation:

276.6148 J = 0.129 J/g·°C * Massgold * 3.62 °C + 0.544 J/g·°C * Masstitanium * 3.62 °C

Using the fact that Massgold + Masstitanium = 14.25 g, we can substitute and solve for the masses of the rings.

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This problem states polybutadiene as a polymer from which we have to draw three monomeric units, showing the rest of it with a general notation (R).

In this case, we need to consider that the monomeric unit in polybutadiene is 1,3-butadiene:

\(CH_2=CH-CH=CH_2\)

And takes the polymeric notation as:

\(-(CH_2=CH-CH=CH_2)_n-\)

Thus, since we need three monomeric units, we bind them as shown on the attached picture, which shows the 1st, 2nd and 3rd ones. Moreover, note the two R's, which stand for the rest of the polymer as a general notation.

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Answer:

neutral

Explanation:

.....................

Answer:

Chemical Changes : The wax near flame burns and gives new substances like carbon dioxide, carbon soot, water vapour, heat and light. LPG is another example of a familiar process in which both the chemical and physical changes take place.

Answer:

When you sprinkle calcium chloride on snow, the snow will melt during the chemical change.

Explanation:

Answer:

Opcion b. 3.06M y 3.4 m

Explanation:

Nuestra solución se compone de:

Soluto → NaCl (10 g)

Solvente → agua (50 g)

Primero, convertimos la masa de soluto a moles:

10 g . 1mol / 58.45g = 0.171 moles

Convertimos la masa de solvente, de g a kg → 50 g . 1kg/1000 g = 0.05 kg

m → molalidad (tipo de concentración que relaciona los moles de soluto en 1kg de solvente)

m = mol/kg → 0.171 mol/0.05kg = 3.42 m

Para calcular M, necesitamos el volumen de solución, y para eso aplicamos densidad. Antes, sumamos masa de soluto + masa de solvente, para obtener la masa de solución

50 g + 10 g = 60 g de solución

d = m /v → v = m /d → 60g / 1.08g/cm³ = 55.5 cm³

cm³ = mL

M = molaridad, la concentración que relaciona los moles de soluto en 1L de solución, pero que también podemos predecir como los milimoles de soluto en 1 mL de solución.

El volumen de solución está en mililitros → 55.5 mL

Convertimos moles a milimoles → 0.171 mol . 1000 mmol /mol = 171 mmol

M = 171 mmol /55.5 mL → 3.08 M

Answer: 8000

Explanation:

The gold is not the compound.

The information related to the compound is as follows

Therefore we can say that gold is not the compound.

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Answer:

Explanation:

Balanced forces  are opposite in direction and equal in size.

Balanced forces are  in a state of equilibrium.

Answer:

Balanced forces are forces whose net amount remains zero.

This can take place when two equal forces are acting in opposite direction.

Balanced forces don't make any  change in the position of objects

Answer:

Crystals that grow more slowly, tend to be larger. For crystals that were grown by slow cooling of the solvent: it usually improves the quality and size of the crystals, if the solution is slowly warmed up until alomst all crystals are dissolved again and than cooled dwon a second time very slowly.

Explanation:

rystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.

Rutherford conducted a famous experiment called the gold foil experiment.

He took a skinny sheet of gold foil. He used a special gadget to shoot alpha particles undoubtedly charged debris on the gold foil. most debris passed straight thru the foil like the foil was now not there. They bombarded very skinny sheets of gold foil with fast-shifting alpha debris. Rutherford found that a small percent of alpha debris had been deflected at massive angles, which could be explained by using an atom with a very small, dense, definitely-charged nucleus at its middle.

Rutherford designed an experiment to apply the alpha particles emitted via a radioactive element as probes to the unseen global atomic structure. If Thomson changed into correct, the beam might move immediately through the gold foil. most of the beams went via the foil, however, some have been deflected. Ernest Rutherford postulated the nuclear structure of the atom, determined alpha and beta rays, and proposed legal guidelines for radioactive decay. In 1911, Rutherford, Marsden, and Geiger determined the dense atomic nucleus by bombarding a thin gold sheet with the alpha particles emitted through radium.

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In the chemical reaction, NAD+ is reduced to NADH.

In the given chemical reaction, glyceraldehyde-3-phosphate is being oxidized, while NAD+ is being reduced. NAD+ (nicotinamide adenine dinucleotide) is a coenzyme that acts as an electron carrier in redox reactions. During the reaction, NAD+ accepts two electrons and a hydrogen ion (H+) to form NADH.

The oxidation of glyceraldehyde-3-phosphate results in the transfer of electrons to NAD+, leading to its reduction. As a result, NAD+ is converted to NADH, which now carries the extra electrons and a hydrogen ion.

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The number of moles of H₂O is  0.36 mol.

The number of moles of LiClO₄ is  0.0521  mol.

Mole is an important standard unit used for the measurement of large quantities of atoms, molecules, or other particles. One mole is equal to 6.022×10²³ units.

The number of moles of a substance is calculated by:

Moles =\(\frac{mass}{molar \;mass}\)

To find the number of moles of H₂O:

Mass of H₂O in the sample = 6.579 g

The molecular weight of H₂O = 18.02g

Moles = \(\frac{mass}{molar \;mass}\)

Moles = \(\frac{6.579 g}{18.02g}\)

Moles = 0.36

To find the number of moles of \(ZnSO_4\):

Mass of \(ZnSO_4\) in the sample = 8.421 g

The molecular weight of \(ZnSO_4\)= 161.47 g/mol

Moles =\(\frac{mass}{molar \;mass}\)

Moles = \(\frac{8.421 g}{161.47 g/mol}\)

Moles = 0.0521 moles

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The answer is-5.76

pH of a solution tells whether the solution is acidic or basic. It is calculated from the hydrogen ion concentrations in the solution as-

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

How to determine [\(H^{+}\)] for a weak acid - strong base reaction?

\(pH = 4.89 + log\frac{0.0066/32}{0.0009/32}\\\\pH = 4.89 + log (7.33)\\\\pH = 4.89 + 0.87\\\\ pH= 5.76\)

Hence, pH = 5.76

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Answer:

4

Explanation:

its a non-metal, dont get confused and pick number 1- it may seem like that’s the answer but remember here we are talking abut the solid phase!

Periodic table is divided into three metals, non metals and metalloids. The non metals are kept on the right side of the periodic table. Th correct option is option D.

Non metals are the element that have property to gain electron. When any element gain electron then element attain negative charge and that element is called anion. The examples of non metals are Oxygen, nitrogen, carbon, Fluorine etc.

The properties of non metals are

Non metals are soft.

Non metals are not malleable that is they can be broken into thin sheets.

Non metals are not ductile they can not be broken into thin wires.

Non metals are brittle in nature that is they can be broken down easily.

Non metals are not lustrous.

Therefore the correct option is option D.

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The positively charged center in an atom is called as Nucleus. It is made up of positively charged protons and neutral sub-atomic particle called as neutrons.

What is meant by protons ?

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Answer:

Svante Arrhenius

Explanation:

Answer:

What????????????????????????????

Explanation:

???

Answer:

Kerosene

Explanation:

You use process of elimination in this question

None of them except for Kerosene can power a bulb

Explanation:

sodium chloride

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