what name is given to the bond between water molecules? what name is given to the bond between water molecules? hydrogen hydrophobic single (nonpolar) covalent ionic polar covalent

Answer:

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Answer: The mass of a 9.0 cm3 cube of lead is 102.6 g

If you multiply volume with the given density you will get the mass of the lead

here,

The given volume is 9.0 cm3 and the density is 11.4g/cm3

the mass will be (9.0*11.4)g = 102.6 g

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Answer:

answer below

Explanation:

The atomic structure primarily affects the chemical, physical, thermal, electrical, magnetic, and optical properties. The properties of a material offer clues as to the structure of the material. The strength of metals suggests that these atoms are held together by strong bonds.

Scientists collected evidence to form a valid theory about the formation and early development of the solar system include:

This is referred to the gravitationally bound system of the Sun and the objects that orbit it.

It also comprises of the planets and their moons and objects such as asteroids and the evidence which shows that the formation of the solar system are the gas and dust which form the stars and debris found around them.

This therefore makes it the evidence collected in the formation of the solar system mentioned the most appropriate choice.

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Answer:

bro how do you answer questions

Answer:

Explanation:

Let's

V1 : The volume of (HCl)

M1 : The........ of ( HCl)

V2 : The volume of (NaOH)

M2 : The....... of ( NaOH)

V1 * M1 = V2 * M2

45 * 0.20 = V2 * 0.50

V2 = 9/0.5

V2 = 18 ml

I hope that is useful for you :)

Answer:

D) contains more OH– ions than H+ ions

Explanation:

THESE ARE THE OPTIONS FOR THE QUESTION

A) causes some indicators to change color B) conducts electricity C) contains more H+ ions than OH– ions D) contains more OH– ions than H+ ions

Base can be regarded as substance which can dissociates in water then form hydroxide ions (OH–) .

Bases can be regarded as compounds which break into hydroxide ions I.e (OH-) with more other compounds if put in an aqueous solution. Hence it contains more OH– ions

The pressure of the gas at 100.0 °C is approximately 2.01 atm.

What is Pressure?

Pressure can be expressed in many different units, depending on the context. Some common units of pressure include pounds per square inch (psi), atmospheres (atm), millimeters of mercury (mmHg), and bars.

To solve this problem, we can use the ideal gas law, which relates the pressure (P), volume (V), number of moles (n), and temperature (T) of a gas:

PV = nRT

where R is the universal gas constant.

Since the volume is constant, we can simplify the ideal gas law to:

P1/T1 = P2/T2

where P1 and T1 are the initial pressure and temperature, and P2 and T2 are the final pressure and temperature.

We can use this equation to find the final pressure P2:

P2 = P1 × T2 / T1

First, we need to convert the temperatures to Kelvin by adding 273.15:

T1 = 25.0 °C + 273.15 = 298.15 K

T2 = 100.0 °C + 273.15 = 373.15 K

Next, we can plug in the values and solve for P2:

P2 = 23.7 psi × 373.15 K / 298.15 K = 29.6 psi

Finally, we can convert the pressure to atmospheres (atm) by dividing by 14.7 psi/atm:

P2 = 29.6 psi / 14.7 psi/atm = 2.01 atm (rounded to two significant figures)

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Answer:

92.1

Explanation:

1.57 * 58.69

The amount of energy that must be supplied in the form of heat to 1 mole of substance to raise the temperature by 1 unit is -26.805kJ/mol.

Solution:

= 5.34 kJ/K * 0.31 K

= 1.655 joules kJ

mol of KSCN = mass/MW = 6.00/97.181

mol of KSCN = 0.0617404

= -Qsolutoin/mol = -1.655 /0.0617404 = -26.805kJ/mol.

Molar heat capacity is the amount of energy required to raise the temperature of one mole of a substance by one degree. to find the molar heat capacity of a compound or element, simply multiply the specific heat by the molar mass. The molar heat of the solution is the total energy change when a substance dissolves. KJ/MOL Measured in kilojoules/mole. Molar heat capacity is the amount of heat required to heat 1 mole of a substance to 1 Kelvin.

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Answer:

It’s a steppingstone in finding the molecular formula of an unknown compound.

Explanation:

Benzene has empirical formula of CH

Ethylene Glycol is an organic compound.

It has a molecular formula of C6H6

Which means it has 6 carbon atoms, and 6 hydrogen atoms.

To find the empirical formula for any compound we need to know how many atoms of different types are present like in case of benzene there were 6 carbon ,and 6 hydrogen atoms

empirical formula means we need to get the simplest ratio of all these atoms, so here we would divide the each different number of atoms by 6 as all these have 6 as a common factor

6 / 6 = 1  ( for Carbon )

6 / 6 = 1  ( for Hydrogen )

Hence the empirical formula becomes : C1H1 / CH

The water and the solutes leave the capillaries at the arterial end because the blood pressure is the greater than the osmotic pressure at the arterial end.

The blood pressure is the greater than the osmotic pressure at the arterial end and the water molecules  and the solutes leave the capillaries at the arterial end. At the arterial end of capillary, the blood pressure is exceeds the limit of the the osmotic pressure, that will causes the  net movement of the fluid out of the capillary.

Thus, due to the higher blood pressure than the osmotic pressure the solutes and the water leaves the artial end.

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Answer:

I need more information

Explanation:

Substances that heat up quickly normally have low specific heat capacities.

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

It is usually measured in joules per kilogram per degree Celsius (J/kgK).it is an important physical property of a material, as it determines the amount of energy required to change its temperature.

It is also useful for calculating the amount of energy required to heat or cool a given mass of the material. The specific heat capacity of a substance is related to its molecular structure and composition, as well as its phase.

For example, the specific heat capacity of liquids is generally higher than that of solids, and the specific heat capacity of gases is higher than that of liquids.

Additionally, the specific heat capacity of a substance can vary with temperature, pressure, and other environmental factors.

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You would need to weigh out \(875 grams\) of sodium carbonate to make \(2.5 kg\) of a \(35.0\%\) (w/w) solution.


First, convert \(35.0\%\) to a decimal by dividing it by \(100\):

\(35.0/100 = 0.35\)

Then, multiply the decimal by the total weight (\(2.5 kg\)) to find the grams of sodium carbonate:

\(0.35 * 2.5 kg = 0.875 kg\)

Next, we need to convert the kilogram (\(kg\)) measurement to grams (\(g\)) since the question asks for the amount in grams.

Since \(1 kg\) is equal to \(1000 g\), we can multiply the amount in \(kg\) by \(1000\):

\(0.875 kg * 1000 g/kg = 875 g\)

Therefore, you would need to weigh out \(875 grams\) of sodium carbonate to make \(2.5 kg\) of a \(35.0\%\) (w/w) solution.

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The new volume of the O2 gas would be approximately 355 ml if the temperature changed from 25 degrees Celsius to 35 degrees Celsius, assuming the pressure remains constant

Assuming the pressure remains constant, we can use the formula V1/T1 = V2/T2 to find the new volume. Converting 25 degrees Celsius to Kelvin (25 + 273 = 298K), we have:
V1 = 344 ml
T1 = 298K
If the temperature changed to 35 degrees Celsius (35 + 273 = 308K), we can solve for V2:
V1/T1 = V2/T2
344 ml / 298K = V2 / 308K
Solving for V2, we get:
V2 = (344 ml / 298K) * 308K = 355 ml (approximately)
Therefore, the new volume of the O2 gas would be approximately 355 ml if the temperature changed from 25 degrees Celsius to 35 degrees Celsius, assuming the pressure remains constant.
A sample of O2 gas occupies a volume of 344 mL at 25°C. If the pressure remains constant, we can apply Charles's Law to determine the new volume when the temperature changes. Charles's Law states that V1/T1 = V2/T2, where V1 and T1 are the initial volume and temperature, and V2 and T2 are the final volume and temperature. To use this formula, temperatures must be in Kelvin. 25°C is equivalent to 298 K. When the temperature changes to T2, substitute the known values into the equation:
(344 mL / 298 K) = (V2 / T2)
Solve for V2 by multiplying both sides by T2:
V2 = (344 mL / 298 K) × T2
To find the new volume, simply replace T2 with the desired final temperature (in Kelvin) and solve for V2.

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I am not quite sure but I would say A. true. Althought  I am not 100% shure this is right.  

But here is the reason that I chose this because in a geocentric model the sun, moon, stars, and plantes all orbit around the earth.

Hope this helps :))

Answer: the answer is a which is true .

Explanation: the sun, moon, stars, and plantes all orbit around the earth.geocentric model, any theory of the structure of the solar system (or the universe) in which Earth is assumed to be at the centre of it all, so it is correct . HHOPE IT HELPS YOU .PLEASE GIVE BRAINLIEST .THANKS .

Answer:

Models

Explanation:

When comparing ethanol, CH3CH2OH, and sodium ethoxide, NaOCH2CH3, Sodium ethoxide, NaOCH2CH3, is the better nucleophile because it has a negatively charged oxygen atom which can easily donate its electron pair to another atom or molecule.

Sodium ethoxide, NaOCH2CH3, is the better nucleophile because it has a negatively charged oxygen atom which can easily donate its electron pair to another atom or molecule.

Ethanol, CH3CH2OH, on the other hand, has a polar covalent bond between the carbon and oxygen atoms, but does not have a negative charge on the oxygen atom. Therefore, it is not as strong of a nucleophile as sodium ethoxide.

In general, nucleophilicity is affected by several factors such as charge, electronegativity, steric hindrance, and solvation. In this case, the negative charge on the oxygen atom of sodium ethoxide makes it a strong nucleophile.

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          A device sprays coating material (paint, ink, varnish, etc.) through the air onto a surface when using the spray painting technique. The most popular varieties atomize and guide the paint particles using compressed gas, often air.

        Volatile Organic Compounds are present in a large number of commonly used professional spray paints (VOCs). VOCs are a group of compounds that are released as gases from a range of solids and liquids, some of which may be harmful to human health in the short- and long-term.

        When a valve button is depressed, aerosol paint, also known as spray paint, is released from a sealed, pressurized container in an aerosol spray. One type of spray painting is aerosol painting, which leaves a smooth, even coat in contrast to many conventional rolled and brushed paints.

         Not every change in color results from a chemical shift. If one were to alter a substance's color through a non-chemical interaction, such as painting an automobile, the alteration would be physical rather than chemical.

        Spray paints come in aerosol cans and are liquid paints. The top of a can  of spray paint has a button that, when depressed, releases paint. Compressed gas is used in aerosol spray cans as a liquid propellant.

          A million times faster than brush-on paint is spray paint. Since spray paint is often oil based rather than water based, it is more durable than conventional latex paint or spray paint. Using spray paint outside is simple when you have a drop cloth and some newspaper handy.

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These characteristics serve as guidelines for assessing the health and quality of aquatic environments, supporting the well-being of fish and other aquatic organisms.

Water temperatures below 86°F (30°C) for warm-water fisheries and below 68°F (20°C) for cold-water fisheries: Different fish species have different temperature preferences for optimal growth and survival. Warm-water fisheries generally thrive in higher water temperatures, while cold-water fisheries prefer cooler temperatures. Water temperatures outside these ranges can stress fish and disrupt their natural habitat.

Dissolved oxygen levels above 5 mg/L: Oxygen is essential for aquatic organisms, including fish, to breathe and carry out their metabolic processes. Adequate dissolved oxygen levels are necessary to support healthy aquatic ecosystems. Oxygen can enter the water through aeration from the atmosphere, photosynthesis by aquatic plants, and mixing with flowing water.

pH between 6 and 9: pH is a measure of the acidity or alkalinity of water. Most aquatic organisms, including fish, have adapted to function within a specific pH range. A pH between 6 and 9 is generally considered suitable for supporting diverse aquatic life. Extreme pH levels outside this range can be detrimental to aquatic organisms.

Streams should be "free from" sediments: Excessive sedimentation in streams can negatively impact aquatic ecosystems. Sediments can smother fish eggs, suffocate benthic organisms, and reduce water clarity, which affects photosynthesis and the availability of food sources. Healthy streams have a natural balance where sediment inputs are minimal, allowing for clear water conditions.

These characteristics serve as guidelines for assessing the health and quality of aquatic environments, supporting the well-being of fish and other aquatic organisms. However, it's important to note that specific water quality requirements may vary for different species and ecosystems.

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Answer:

NiC2N2

Explanation:

Answer:

0.41 and 0.02 moles Au

Explanation:

Moles:

81 grams (2.6 troy oz):

mole Au = 81g/(196.97 g/mole) = 0.41 moles Au

4.0g (0.13 oz):

mole Au = 4.0g/(196.97 g/mole) = 0.020 moles Au

Answer: Electric Generator is a device which converts mechanical energy into electrical energy.

It works by the principle of Electromagnetic induction.

Electromagnetic induction is defined as the production of electric current due to the change in magnetic field. The number or turns or coils present inside the generator is directly proportional to the amount of voltage produced. Electromagnetic induction was first discovered by Micheal Faraday.

Explanation:

The electrons can jump shells by releasing/gaining energy. If an atom develops a positive charge, how could it have happened? It couldn't possibly have taken on additional protons because protons and neutrons are bound by the strong nuclear force, which keeps the nucleus stable.

Answer:

The word that best characterizes the Pardoner in this passage is hypocritical.

Explanation:

The Pardoner is against avarice, but as it turns out, he himself commits this sin.