hydrogen or delayed, under-bead cracking becomes a concern when welding steels with which of the following minimum carbon content?

It is  measuring out to be 970 ml instead of 1,000 ml because while mixing there is probability that missing 30 ml of mixture is evaporated as it has isopropyl alcohol which has high volatility according to forces of attraction.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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Answer:

answer = -0.95

Explanation:

Answer:

your answer is given below

Explanation:

Take it stepwise, and you are going to have to look up the various heat values.

You have 36.5grams of ice, presumably at 0C.  You will need to add heat to take the ice at 0 C to water at 0 C. (Latent heat of melting)  Then you add in a different heat value to take the water at 0 C to water at 82.3 C. (Specific heat of water)

Add the two heat amounts together.

According to specific heat capacity, to calculate the amount of heat needed to melt ice given mass of ices is multiplied by specific heat of ice and the temperature change which it undergoes.

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.

It is given by the formula ,

Q=mcΔT

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Answer:

403.2 grams of oxygen

Explanation:

According to the balanced chemical equation, 2C2H6 + 7O2 —> 4CO2 + 6H2O, 4 moles of carbon dioxide (CO2) are produced for every 7 moles of oxygen (O2) that react. Therefore, if 7.2 moles of carbon dioxide are produced, the number of moles of oxygen that react is (7.2 moles CO2) * (7 moles O2 / 4 moles CO2) = 12.6 moles O2.

Since the molar mass of oxygen is approximately 32 g/mol, the mass of oxygen that reacts is (12.6 moles O2) * (32 g/mol) = 403.2 g. Therefore, 403.2 grams of oxygen react in order to produce 7.2 moles of carbon dioxide.

If the MDS (Minimum Data Set) is successfully implemented, several positive outcomes can be expected. The MDS is a standardized assessment tool used in healthcare settings to evaluate the physical, mental, and psychosocial well-being of patients.

Its successful implementation can lead to improved patient care, more efficient resource allocation, and enhanced data analysis.With the MDS in place, healthcare providers can gather consistent and comprehensive data about patients, enabling better understanding of their needs and tailoring of individualized care plans.

This can result in improved treatment outcomes and patient satisfaction. Additionally, the MDS facilitates effective communication and information sharing among healthcare professionals, leading to coordinated care and reduced errors.From a broader perspective, successful implementation of the MDS allows for accurate and reliable data collection, enabling robust research and evidence-based decision-making.

This can contribute to advancements in healthcare practices, policy development, and quality improvement initiatives. Ultimately, the successful implementation of the MDS can enhance patient outcomes, improve healthcare delivery, and drive positive changes in the healthcare system as a whole.

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Answer:

524g CO2

Explanation:

Just took the quiz

Answer:

C. Golden rice enriched with vitamin A

Answer:

they tested the bone age

Explanation:

The first step we have to follow is to convert the units of each of the measurements (mL to L, mmHg to atm and °C to K):

Now, use the ideal gases law to find the number of moles of carbon dioxide at these conditions:

Now, use the chemical equation to find how many moles of acetic acid are needed to produce that amount of carbon dioxide:

Use the stoichiometric ratio of moles of acetic acid used to moles of carbon dioxide produced:

Use the molar mass of acetic acid to convert this amount of moles to mass:

Finally use the density of acetic acid to find volume of 0.079g of this compound:

It means that 0.08292 would be needed to obtain the sample of carbon dioxide.

Answer:

\(V_{NO}=2.8L\)

Explanation:

Hello!

In this case, we consider the given reaction to realize there is a 5:4 mole ratio between oxygen and nitrogen monoxide; thus, we infer that, at STP conditions, such mole ratio is eligible as a volume ratio too; therefore, the produced liters of nitrogen monoxide gas is:

\(V_{NO}=3.5LO_2*\frac{4LNO}{5LO_2} \\\\V_{NO}=2.8L\)

Best regards!

As a result, the ideal gas law is applied, and the pressure of the gas in the container is 1.44 atm.

The Kelvin temperature and hence the volume are going to be in direct proportion when the pressure on a sample of a dry gas is held constant, according to the definition of the Charles Law Formula. PV = k is the law's equation, and k might be a constant.

This issue can be resolved by applying the ideal gas law:

PV = nR

T = -52 °C + 273.15 = 221.15 K

n = 0.642 mol

V = 8.6 L

T = 221.15 K

\(R = 0.0821 L·atm/mol·K (gas constant for ideal gases)\)

PV = nRT

P = nRT/V

P = (0.642 mol)(0.0821 L·atm/mol·K)(221.15 K)/(8.6 L)

P = 1.44 atm

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Answer:

Option A (0.043 g) is the correct answer.

Explanation:

Given:

= 43 mg

As we know,

\(1 \ mg = \frac{1}{1000} \ g\)

then,

⇒ \(43 \ mg = \frac{43}{1000} \ g\)

              \(= 0.043 \ g\)

Thus, the above is the correct alternative.

The iron oxide has 69.9

Explanation:

distance = 1.560 × 10⁸ km= 1.560×10¹¹m

Speed (of light) = 3×10⁸m/s

time = distance/speed

=>1.560×10¹¹/3×10⁵ = 0.52×10⁶s = 52×10⁴ seconds.

hope this helps you.

The change in internal energy = 2.701 x 10² kJ

Given

Heat absorbed by system = 1.69 x 10² kJ

Work done on system = 1.011 x 10² kJ

Required

The change in Internal energy

Solution

We can use the first law of Thermodynamics :

\(\tt \Delta U=Q+W\)

The sign rules for heat and work are set as follows:  

• The system receives heat, Q +  

• The system releases heat, Q -  

• The system does work, W -  

• the system accepts work, W +  

Heat absorbed/receive heat from surrounding = Q+

Work done on the system = W+

and input the given values

\(\tt \Delta U= 1.69\times 10^2+1.011\times 10^2\\\\\Delta U=\boxed{\bold{2.701\times 10^2~kJ}}\)

Answer:

first choice

Explanation:

energy is written on the left side is its absorbed

2 elements came together so bonds are formed.

Answer:

A. It shows the same number of atoms of each element on both sides of the equation.

Explanation:

A balanced chemical equation demonstrates the conservation of matter by showing the number of atoms of each element on both sides of the equation or expression.

According to the law of conservation of matter, matter is neither created nor destroyed in the course of a chemical reaction but atoms are rearranged.

Answer:

true

Explanation:

The correct coefficients for balancing the equation S + O₂ → SO₃ are:  2, 6, 2.option b.

In order to balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. Let's break down the elements in the equation:

On the left side, we have:

- Sulfur (S): 1 atom

- Oxygen (O): 2 atoms

On the right side, we have:

- Sulfur (S): 1 atom

- Oxygen (O): 3 atoms

To balance the sulfur atoms, we need 2 molecules of SO₃ on the right side. This gives us:

- Sulfur (S): 2 atoms

- Oxygen (O): 6 atoms

Now, both sides have the same number of sulfur and oxygen atoms. Therefore, the balanced equation is: 2S + 3O₂ → 2SO₃. The correct coefficients are: 2, 6, 2, which corresponds to option b.

By multiplying the sulfur (S) coefficient by 2, we balance the sulfur atoms. Then, by multiplying the oxygen (O₂) coefficient by 3, we ensure that both sides have the same number of oxygen atoms.

The resulting coefficients are 2S + 3O₂ → 2SO₃. This balanced equation follows the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction.option b.

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The answer will be 3,279 km/hr.

Pedometer is a device used to measure the number of steps covered by a person.

Pedometer sensor = Step count and IMS sensor used.

Peak Speed rate recorded in the pedometer = 91.1 cm/s

1 Km = 100 * 1000 cm

1 hour = 60 * 60 = 3600 sec

Now, 1 cm = 10^-5 km

1 sec = 0.00027777777 hour

speed = 91.1 cm /s = 91.1 * 10^-5 / 0.00027777777 km/hour

speed = 3.279 km/hr

Steve's peak speed rate in km / hr would be 3.279 km/hr

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Answer:

It has 17 protons, 17 electrons, and 18 neutrons/ 35 protons, 35 electrons, and 17 neutrons. 21. Phosphorus-33 (atomic number 15) contains 18 neutrons/ 18 protons

Answer:

when they have eight valence electrons.

Explanation:

When atoms do not have a full valence shell, the atoms are more likely to react with other and vice versa.

Answer:

When they have a full shell of electrons

Explanation:

and or eight valence electrons

Methane, also known as \(CH_{4}\), is a substance that has 27% carbon by mass. \(C_{3}H_{8}\) is a different molecule that has 27% mass-based carbon.

Carbon has a molar mass of 12.01 g/mol. Finding compounds with molar masses similar to 27 g/mol will help us figure out which chemical has about 27% carbon by mass, as 27% of 27 g/mol is roughly 7.3 g/mol (because 27% is comparable to 0.27).

The chemical \(CH_{4}\), which has a molar mass of roughly 16 g/mol, is one that fulfils this definition. We can use the following formula to get the percentage of carbon in \(CH_{4}\):

(Mass of Element / Molar Mass of Compound) x 100% Equals % composition

The % content of carbon in methane is as follows:

Mass of carbon divided by the molar mass of methane yields the percentage of carbon.

% of carbon is equal to (12.01 g/mol / 16.04 g/mol) multiplied by 100.

Carbon content as a percentage: 74.97%

As a result, methane does not contain 27% of its mass in carbon.

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Explanation:

multiplying the cost to make one unit of your product by the number of products you've developed. For example, if it costs $60 to make one unit of your product and you've made 20 units, your total variable cost is $60 x 20, or

We can see here that the catalytic cycle for the hydrogenation of alkenes using Wilkinson's catalyst involves several steps.

Here's an overview of the catalytic cycle, including the necessary details:

i. Chemical structure of the catalyst:

Wilkinson's catalyst, also known as chloridotris(triphenylphosphine)rhodium(I), has the following chemical structure: [RhCl(PPh3)3]

ii. Molecular geometry of the catalyst:

The Wilkinson's catalyst has a trigonal bipyramidal geometry around the rhodium center. The three triphenylphosphine (PPh3) ligands occupy equatorial positions, while the chloride (Cl) ligand occupies an axial position.

iii. Type of reactions involved:

The catalytic cycle involves several reactions, including:

iv. Starting material, reagent, and solvent:

The starting material is an alkene, and the reagent is Wilkinson's catalyst ([RhCl(PPh3)3]). The reaction is typically carried out in a suitable solvent, such as dichloromethane (CH2Cl2) or tetrahydrofuran (THF).

v. Major and minor end-products:

The major end-product of the hydrogenation reaction is the fully saturated alkane, resulting from the addition of hydrogen across the double bond. The minor end-product may include cis- or trans-configured alkanes if the original alkene substrate possesses geometric isomers.

vi. Intermediates:

The intermediates in the catalytic cycle include:

These intermediates play a crucial role in facilitating the hydrogenation reaction and enabling the catalytic cycle to proceed.

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Answer:

Monomer liquid and polymer powder nail enhancement are lucrative service

The correct statement about cytokinesis is that a cell plate forms in plant cells. Option C is correct.

During cytokinesis, the cytoplasm of the parent cell divides into two daughter cells, each with its own nucleus and organelles. In animal cells, a contractile ring made of actin and myosin filaments forms around the cell's equator and contracts, pinching the cell in two.

In contrast, plant cells build a cell plate, which forms from vesicles produced by the Golgi apparatus, at the cell's equator. These vesicles fuse together and form a new cell wall to separate the two daughter cells. The other three options mentioned in the question are related to mitosis, which is the division of the nucleus, whereas cytokinesis is the division of the cytoplasm. Option C is correct.

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Answer: Industrial processes including mining and manufacturing historically have been leading causes of soil pollution. Industrial areas typically have much higher levels of trace elements and organic contaminants. This is due to intentional and unintentional releases from industrial processes directly into the environment, including to the soil, adjacent water bodies, and the atmosphere.

Explanation:

Answer:

Fractional conversion=0.760

Percentage by which the other reactant is in excess=16.56%

extent = 56.23 mol/s

Explanation:

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