Water has a specific heat capacity of 4.184J/g Celsius. The experiment heated 200 grams of water from 30 Celsius to 100 Celsius. How much energy is absorbed by the water?

Answer: because the particles in a solid are more closer to each other than the liquid and gas particles. So the closeness if the particles give a particular shape for the substance.

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Answer:

Gravitational potential energy depends on an object's weight and its height above the ground (GPE = weight x height).Explanation:

Answer:

Explanation:

Remark

CH2 provides the basic structure of the hydrocarbon. It will be multiplied by some factor determined by the number of grams / mol. I will use rounded numbers because all periodic tables are slightly different.

Theoretical mass of CH2

1 C = 1 * 12 = 12

2 H= 2 * 1 =  2

Mass CH2 = 14

The multiplier for CH2

56.108 rounded = 56

Multiplier = molar mass (rounded)/Mass CH2

Multiplier = 56/14 = 4

Chemical

(CH2)_4 = C4H8

Answer: C4H8

Answer:

Explanation:

1 standard deviation range will look like: [average - SD, average + SD]

Here the miximum value will be: average - SD = 2.6 - 0.80 = 1.80 ml

and the maximum value will be: average + SD = 2.6 + 0.80 = 3.40ml

To deploy configuration profiles for computers from Jamf Pro, the Apple Push Notification service (APNs) must be available.

APNs is a cloud-based service provided by Apple that enables the secure transfer of data between Apple devices and servers. It is essential for communication between Jamf Pro and Apple devices during the deployment of configuration profiles.

APNs is used to initiate the connection between the devices and Jamf Pro, allowing for the transfer of the configuration profiles. Without APNs, it would be impossible to deploy configuration profiles to Apple devices using Jamf Pro.

Therefore, it is critical to ensure that APNs is available and functioning correctly before attempting to deploy configuration profiles using Jamf Pro.

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Answer:

a) mass of H₂O  produced = 4.0665 * 18 = 73.197 g

b)mass of H₂O  produced = 0.214 * 18 = 3.852 g

c) Oxygen gas, O₂, is the limiting reactant, since the number of moles available for reaction is far smaller and the mass of water produced from it is smaller too.

The reaction is the combustion of hydrogen gas to form water vapor. The question is not complete. A related question is given below:

Consider the following balanced equation:  

2H2 + O2 --------> 2H2O  

If you start with 8.133 g of H2 and 3.425 g of O2, find the following:

a) With excess O2, what mass (grams) of H2O would be produced by the H2?

b) With excess H2, what mass (grams) of H2O would be produced by the O2?

c) What is the chemical formula for the limiting reactant?

Explanation:

Equation of reaction: 2H₂ + O₂ ---> 2H₂O

From the equation of reaction, 2 moles of hydrogen gas reacts with 1 mole of oxygen gas to produce two moles of water

Molar mass of hydrogen gas, H₂ = 2 g/mol; molar mass of oxygen gas, O₂ = 32 g/mol; molar mass of H₂O = 18 g/mol

a) number of moles of hydrogen in 8.133 g = 8.133 g/ 2g/mol = 4.0665 moles

mole ratio of H₂ to H₂O is 1:1, therefore, 4.0665 moles of H₂O will be produced

mass of H₂O  produced = 4.0665 * 18 = 73.197 g

b) number of moles of oxygen in 3.425 g = 3.425 g /32 g/mol = 0.107 moles

mole ratio of O₂ to H₂O is 1:2, therefore, 0.107 * 2 moles of H₂O will be produced = 0.214 moles of H₂O

mass of H₂O  produced = 0.214 * 18 = 3.852 g

c) number of moles of hydrogen in 8.133 g = 4.0665 moles

number of moles of oxygen in 3.425 g = 0.107 moles

mole ratio of H₂ to O₂  = 4.0665/0.107 = 38 : 1

Oxygen gas, O₂, is the limiting reactant, since the number of moles available for reaction is far smaller and the mass of water produced from it is smaller too.

Therefore, the bottom hole pressure is 500 psi when the well productivity is 2.5. Since the height is negative, it indicates that the liquid is below the perforation depth of 8,000 ft. Therefore, the liquid level will not rise in the tubing, and the tubing will remain empty.  Therefore, gas lift operation is justified in this scenario.

a) To determine the bottom hole pressure (BHP) when the well productivity is 2.5, we can use the Vogel's equation:

BHP = Shut-in BHP - (Productivity Index × Liquid Flow Rate)

Given:

Shut-in BHP = 2,500 psi

Productivity Index = 2.5

Liquid Flow Rate = 800 b bl/d

Convert the liquid flow rate to barrels per day:

Liquid Flow Rate = 800 b bl/d

Substitute the values into the equation:

BHP = 2,500 - (2.5 × 800)

BHP = 2,500 - 2,000

BHP = 500 psi

Therefore, the bottom hole pressure is 500 psi when the well productivity is 2.5.

b) The level to which the liquid is allowed to rise in the tubing can be determined using the bubble point pressure of the liquid, which is the pressure at which gas begins to come out of solution. The bubble point pressure can be estimated using the specific gravity of the formation water and the API gravity of the oil.

In this case, the specific gravity of the formation water is given as 1.2, and the API gravity of the oil is 35°API. Using correlations or tables, we can estimate the bubble point pressure.

Assuming that the bubble point pressure is 1,000 psi, we can calculate the height of the liquid column using the hydrostatic pressure equation:

Height = (BHP - Bubble Point Pressure) / (0.433 × Specific Gravity of Liquid)

Given:

BHP = 500 psi

Bubble Point Pressure = 1,000 psi

Specific Gravity of Liquid = (141.5 / (API Gravity of Oil)) - 131.5

Specific Gravity of Liquid = (141.5 / 35) - 131.5 ≈ 0.23

Substitute the values into the equation:

Height = (500 - 1,000) / (0.433 × 0.23)

Height ≈ -3,269 ft

Since the height is negative, it indicates that the liquid is below the perforation depth of 8,000 ft. Therefore, the liquid level will not rise in the tubing, and the tubing will remain empty.

c) Gas lift operation should be executed when there is a need to lift the produced fluid from the wellbore to the surface. In this case, the well is equipped with a gas lift system, which suggests that gas lift operation is intended. Gas lift can help to overcome the wellbore pressure and lift the liquid to the surface. Given the desired liquid flow rate and the presence of water-cut in the produced fluid, gas lift can aid in lifting the fluid mixture to the surface efficiently. Therefore, gas lift operation is justified in this scenario.

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Answer:

0.8833 mole of C3H8

Explanation:

Given:

Mass of C₃H₈ (Propane) = 38.95 gram

Computation:

Molar mass of C = 12.01

Molar mass of H = 1.008

Molar mass of C₃H₈ (Propane) = 3(12.01) + 8(1.008)

Molar mass of C₃H₈ (Propane) = 36.03 + 8.064

Molar mass of C₃H₈ (Propane) = 44.094

Number of mol in 38.95 gram Propane = Mass / Molar mass

Number of mol in 38.95 gram Propane = 38.95 / 44.094

Number of mol in 38.95 gram Propane = 0.88334

Answer:

Use the Periodic Table to find molar masses.

Propane (C3H8), a common fuel, reacts with oxygen to form carbon dioxide and water according to the equation below:

C3H8 + 5O2 → 3CO2 + 4H2O

If a propane heater burns 38.95 g C3H8, it consumes

38.95 mol C3H8.

0.8830 mol C3H8.

1 mol C3H8.

44.10 mol C3H8.

Part 2

How many moles of oxygen are required to produce 37.15 g CO2?

37.15 g CO2 = 1.407 mol O2

Part 3

What mass of propane is necessary to react with the amount of oxygen calculated in the previous question?

12.41   g C3H8    

Dolomite resembles calcite in many ways, but in approximately half of the sites where there could be calcium ions in dolomite's crystal structure, there is instead a magnesium ion.

In many respects, including its crystal structure and physical characteristics, dolomite does resemble calcite. However, the composition of their crystal structures is where dolomite and calcite differ most significantly from one another. The crystal structure of calcite is composed of calcium ions linked to carbonate ions. Whereas, dolomite has a more intricate crystal structure. Both calcium and magnesium ions are present in dolomite and are bound to carbonate ions.

A magnesium ion takes the place of a calcium ion in around half of the crystal locations where calcium ions could be found in dolomite's crystal structure. Dolomite's distinctive composition and qualities are the result of the substitution of magnesium for calcium. Dolomite's slightly different physical properties from calcite, such as greater hardness and a slightly different crystal habit, are caused by the presence of magnesium.

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(a) The number of moles of gas for first case is 0.065 mol.

(b) The number of moles of gas for second case is 0.03 mol.

(c) The number of moles of gas for third case is 0.038 mol.

The number of moles of the gas is determined by applying ideal gas equation as follows;

PV  = nRT

n = PV/RT

where;

n = (1.06 x 1.25) / (0.082057 x 250)

n = 0.065 mol.

n = (0.8 x 0.925) / (300 x 0.082057)

n = 0.03 mol

n = (0.75 x 0.921)/(223 x 0.082057)

n = 0.038 mol

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(a) Substance i has the lower boiling point. (b) NaBr has the lower boiling point. (c) HBr has the lower boiling point.

(a) The boiling point of a substance depends on the intermolecular forces present in it. If the intermolecular forces are weak, the boiling point will be low. Substance i has a smaller molecular weight and a weaker intermolecular force of attraction than substance ii, so it has a lower boiling point.

(b) NaBr and PBr3 are both ionic compounds. The boiling point of an ionic compound depends on the strength of the electrostatic forces between the ions. Since Pb is larger than Na, the electrostatic forces in PBr3 are stronger than those in NaBr, so PBr3 has a higher boiling point than NaBr.

(c) H2O and HBr are both polar molecules, and the boiling point depends on the strength of the dipole-dipole interactions. However, HBr is smaller than H2O and has weaker intermolecular forces of attraction. Therefore, HBr has a lower boiling point than H2O.

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Answer:

Solar eclipse

Explanation

Answer: it neap tide

Explanation:

doing chem alone is fun but in school its not at all  

ANSWER

Water molecule is a compound

EXPLANATION;

Water molecule is formed from the combination of oxygen and hydrogen atoms

Recall, that compound is the combination of two or more elements that are chemically combined together

Therefore, water molecule is a compound

The neutral formula unit for the combination of magnesium and \(SO_32-\) is \(MgSO_3\).

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Answer:

trees collect energy from sitting in the sun, the interact with their enviorment because they provide oxygen, and they reproduce when their fruit flowers or leaves fall off.

Explanation:

The evidence that indicated that the map made near Lake Tapps in Washington was a massive lahar from Mt. Rainier and not an old glacier: Whole logs mixed in with the rocks, Clay-sized particles and An abundance of snow and ice

The following evidence indicated that the map made near Lake Tapps in Washington was a massive lahar from Mt. Rainier and not an old glacier:

Whole logs mixed in with the rocks: The presence of whole logs mixed in with the rocks suggests a rapid and powerful flow, characteristic of a lahar, rather than the slow movement associated with glaciers.

Clay-sized particles: The presence of clay-sized particles is often associated with lahars, as they can be easily transported by the flowing volcanic material.

An abundance of snow and ice: The presence of snow and ice is indicative of a recent event, as glaciers tend to accumulate and retain snow and ice over time. In the case of a lahar, the presence of snow and ice suggests a more recent deposition.

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ANSWER

The addition of HCl will shift to reactants

EXPLANATION

When some strong acid is added to a buffer, the equilibrium is shifted to the left, and the hydrogen ion concentration increases by less than expected for the amount of strong acid added. Buffer solution helps in adjusting the pH of a substance.

Since the HCl is a strong acid, it will shift to the left (reactant sides)

Considering the definition of pH, the value of the pH in the solution is 8.60

pH iis a measure of acidity or alkalinity. It indicates the amount of hydrogen ions present in a solution or substance.

Mathematically, the pH is defined as the negative base 10 logarithm of the activity of hydrogen ions, that is, the concentration of hydrogen ions or H₃O⁺:

pH= - log [H⁺]= - log [H₃O⁺]

The numerical scale of pH includes the numbers from 0 to 14, where value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.

In this case, you know that the the concentration of H₃O⁺ has a value of 2.5×10⁻⁹ M

You can replace this value in the definition of pH:

pH= -log (2.5×10⁻⁹ M)

Solving:

pH= 8.60

Finally, the pH is 8.60

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Answer:

true, false

Explanation:

Answer: i think

lithium

potassium

Geologists examine a rock sample's mineral content, colour, and texture. Rocks are composed of mineral and other elements.

Rock is really a naturally occurring & cohesive conglomerate of one or even more minerals in geology. These aggregates are the fundamental unit of the solid Earth and often form identifiable and mappable volumes. Igneous, metamorphic, & sedimentary rocks are the three basic kinds of rocks. Crystallization, metamorphism, & erosion and sedimentation are the three processes that turn one rock into another.

Mineral deposit sampling is an important part of geological exploration. An geological sample is indeed a typical unit of soil, rock, and mineral taken from a greater quantity or mass of exposures and used to illustrate that larger body. To begin identifying your rock, take note of its physical characteristics such as color, luster, banding, layering, or grain size. Next, do basic tests to determine hardness and weight. Finally, compare your rock's qualities to those of recognized rock kinds while seeking for further distinguishing traits.

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Therefore, the empirical formula of the compound is \(C_{2}H_{5}\).

To determine the empirical formula of the unknown compound containing only carbon we can do the combustion analysis which produced 9.108 g of \(CO_{2}\) and 4.644 g of \(H_{2}O\). Here are the steps to find the empirical formula:

1. Calculate the moles of carbon (C) and hydrogen (H) in the compound:
- For carbon: 9.108 g\(CO_{2}\)  * (1 mol \(CO_{2}\)  / 44.01 g \(CO_{2}\) ) * (1 mol C / 1 mol \(CO_{2}\) ) = 0.2069 mol C
- For hydrogen: 4.644 g \(H_{2}O\) * (1 mol \(H_{2}O\) / 18.02 g \(H_{2}O\)) * (2 mol H / 1 mol \(H_{2}O\)) = 0.5158 mol H

2. Determine the mole ratio of carbon and hydrogen:
- Divide both values by the smallest number of moles (in this case, 0.2069):
 - C: 0.2069 mol / 0.2069 = 1
 - H: 0.5158 mol / 0.2069 = 2.49 ≈ 2.5

3. If necessary, multiply the mole ratio by a whole number to obtain a whole number ratio:
- In this case, we can multiply both values by 2 to get whole numbers:
 - C: 1 * 2 = 2
 - H: 2.5 * 2 = 5

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Answer and Explanation:

When methane (CH4) and chlorine (Cl2) react, a substitution reaction takes place. Specifically, the reaction is a halogenation reaction, in which one or more hydrogen atoms in the methane molecule are replaced by chlorine atoms. The reaction can be represented by the following equation:

CH4 + Cl2 → CH3Cl + HCl

In this equation, CH3Cl represents chloromethane, which is a type of organochlorine compound. The reaction is typically initiated by ultraviolet (UV) light or heat, and it proceeds through a series of free radical chain reactions. The products of the reaction are typically a mixture of chloromethane and hydrogen chloride (HCl) gas.

we can conclude that the scale is precise but not accurate. The correct option is d.This means that the scale consistently gives the same measurements, but they are not accurate or close to the true value.

To understand whether the scale is precise, accurate, both, or neither, we need to define these terms. Precision refers to the consistency or reproducibility of measurements, while accuracy refers to how close the measured value is to the true or accepted value. In this case, the true value is 1.000g, and the measurements captured are 0.843 g, 0.842 g, and 0.843 g.Looking at these measurements, we can see that they are not accurate since none of them are close to 1.000g. However, we can also see that they are precise since they are all very similar to each other, with a difference of only 0.001g between the highest and lowest measurement.
Therefore, To improve accuracy, the scale may need to be recalibrated or replaced.

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complete question: Testing precision and accuracy of scale, weigh block exactly 1.000g. these are measurements captured:

a. 0.843 g

b. 0.842 g

c. 0.843 g

d. Is the scale precise, accurate, both, or neither?

The molar absorptivity of compound X is approximately 7.99 × 10^3 M^(-1) cm^(-1).

To calculate the molar absorptivity of compound X, we can use the Beer-Lambert Law, which states that the absorbance of a sample is directly proportional to its concentration and the molar absorptivity.

The Beer-Lambert Law equation is given by:

A = ɛ * c * l

Where:

A is the absorbance,

ɛ (epsilon) is the molar absorptivity,

c is the concentration of the compound in moles per liter (M), and

l is the path length in centimeters (cm).

Given:

Absorbance of compound X solution (A) = 0.331

Path length (l) = 1.000 cm

Concentration of compound X (c) = 4.14 × 10^(-5) M

We can rearrange the equation to solve for the molar absorptivity (ɛ):

ɛ = A / (c * l)

Substituting the given values:

ɛ = 0.331 / (4.14 × 10^(-5) M * 1.000 cm)

Calculating the result:

ɛ ≈ 7.99 × 10^3 M^(-1) cm^(-1)

Therefore, the molar absorptivity of compound X is approximately 7.99 × 10^3 M^(-1) cm^(-1).

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