A heterogeneous mixture is:

A. composed of atoms bonded together.
B. composed of different parts that are indistinguishable in their color, texture, or appearance.
C. composed of only one type of element.
D. composed of different parts that are distinguishable in their color, texture, or appearance.

92238U→90234Th+24He2 is a Niclear reaction

Nuclear reaction involves Nuclear elements.

It is usually defined as spontaneous emission of electrons.

Uranium 238 is a nuclear element

The reaction that represents a nuclear reaction is : ( C ) 92238U→90234Th+24He2+

A nuclear reaction is a process whereby two nuclei collide to form one or more nuclides. There are 4 different types of nuclear reaction and they are ;

Uranium 238 is a nuclear element therefore the reaction involving Uranium 238 is a nuclear reaction.

Hence we can conclude that The reaction that represents a nuclear reaction is : ( C ) 92238U→90234Th+24He2+

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Answer:

Coal

Explanation:

Answer:

Explanation:

Observation. Observational skills are the starting point for critical thinking. People who are observant can quickly sense and identify a new problem.

Analysis. Once a problem has been identified, analysis skills become essential. ...

The pressure in atm exerted by 1 mole of methane placed into a bulb with a volume of 244.6 mL at 25°C is 101.94atm.

The pressure of an ideal gas can be calculated using the following formula:

PV = nRT

Where;

According to information in this question;

P × 0.24 = 1 × 0.0821 × 298

0.24P = 24.47

P = 24.47/0.24

P = 101.94atm

Therefore, the pressure in atm exerted by 1 mole of methane placed into a bulb with a volume of 244.6 mL at 25°C is 101.94atm.

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Based on the evidence in the solubility graph, when 10 g of Ce2(SO4)3 is dissolved in 100 mL of water at 20°C, the solution is said to be saturated.

An unsaturated solution is a solution which contains less solute than it can actually dissolved in a given volume of solvent at a given temperature.

A solubility curve or graph provides information about the solubility of a solute at a given temperature.

From the solubility graph given, at 20°C, less than 10 g of Ce2(SO4)3 will be dissolved in 100 mL of water.

Therefore, when 10 g of Ce2(SO4)3 is dissolved in 100 mL of water at 20°C, the solution is said to be saturated.

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Answer:

p2 = .75 atm

Explanation:

p1 v1  = p2 v2

5 * 1.5  = p2 10    

Answer:

Yes, they are same

Explanation:

Glycosphingolipids are a subtype of glycolipids containing the amino alcohol sphingosine. They may be considered as sphingolipids with an attached carbohydrate. Glycosphingolipids are a group of lipids (more specifically, sphingolipids) and are a part of the cell membrane.

Answer:

glycosphingolipid is an example of sphingomyelin

Answer:

A. Plants

Explanation:

Plants are producers, which make their own food. Other organisms, such as rodents, birds, and wild cats, are consumers, which receive their energy from plants or other consumers.

Answer:The upward spiral theory of lifestyle change explains how positive affect can facilitate long-term adherence to positive health behaviors. The inner loop of this spiral model identifies nonconscious motives as a central mechanism of behavioral maintenance.

Explanation://

Answer:

The answer is D) 51.2%

Explanation:

5.12g of 10.00g of the substance is water:

percentage of water= 5.12 x 10.00 =51.2%

Answer:

b

Explanation:

The formation of ammonia gas involves reacting hydrogen gas and nitrogen gas in a mole ratio of 3 to 1. as shown below:

Ammonia gas is formed from the reaction between nitrogen gas and hydrogen gas.

Three moles of hydrogen gas will react with 1 mole of nitrogen gas to form 2 moles of ammonia gas.

The equation of the reaction is given below as:

[tex]N_2 + 3H_2 \rightarrow 2NH_3[/tex]

Therefore, the formation of ammonia gas involves reacting hydrogen gas and nitrogen gas in a mole ratio of 3 to 1.

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Answer:

5p

Explanation:

We know

Number of Nodes =n-l

i)5s

n=5

l=0

Number of nodes=5-0=5

ii)5p

n=5

l=1

Number of nodes=5-1=4

Hence correct option is option b 5P

Atomic orbitals are the property that explains the position of the electron. 5p orbital has four nodes in total. Thus, option B is correct.

Nodes are the point in the orbit where the electron density is zero and is given by n-1.

In 5s the n = 5, l = 0 so, number of nodes = 5. In 5p, n = 5, l = 1, so nodes = 4. In 5d, n = 5, l = 2, so nodes = 3, and in 5f, n = 5, l = 3 so, nodes = 2.

Therefore, option b. 5p has four orbital nodes.

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Answer:

C. When hydrogen has two electrons in its valence shell, it has a full valence shell.

D. Hydrogen can bond with oxygen to make water.

As both C & D are correct, there would be two answers.

Hope this helps!

Explanation:

Answer:

The answer is A: Hydrogen has only one electron shell.

Answer:

The water in the hydrate (referred to as "water of hydration") can be removed by heating the hydrate. When all hydrating water is removed, the material is said to be anhydrous and is referred to as an anhydrate.

Explanation:

If the water is not completely removed from salt during heating process it will result in higher mole ratio of water to salt as mass of water will also be accounted while calculating mole ratio.

Salt is defined as a chemical compound which is ionic in nature and consists of cation and an anion.It has no net electrical charge as the charges are completely neutralized in case of salts.

They are classified as acidic, basic or neutral salts depending on the ions they produce on dissolution.They have wide variety of colors depending on the elements from which they are formed and have five basic tastes.Salts are usually odorless  except a few exceptions . They are highly soluble in water and are insulators in the solid state, to make them conductive they need to be melted or dissolved.

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Based on the milligram per Kg of soil sample of each analyte, calcium ion, Ca2+ and magnesium ion, Mg2+ are both classified as macronutrients.

Soil nutrients are minerals which are found present in the soil and which are required by plants for their growth and development.

Soil nutrients can be classified based on amount needed by plants as well as the amount present in the soil into:

The mg/Kg of each analyte in the soil sample is as follows:

mass of soil sample = 2.65 g = 0.00265 kg

Calcium ion:

amount per mg/Kg of soil sample = 0.625mg/0.00265 kg

amount per mg/Kg of soil sample = 236 mg/kg

Magnesium ion:

0.00245 g = 2.45 g

amount per mg/Kg of soil sample = 2.45 mg/0.00265

amount per mg/Kg of soil sample = 924 mg/Kg

Therefore, calcium ion, Ca2+ and magnesium ion, Mg2+ are both classified as macronutrients.

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Answer:

D

Explanation:

For the maximum concentration of Ag+ is mathematically given as

x = 3.6×10−5

Generally, the Ksp equation for this reaction is mathematically given as

[tex]K_{sp}=[Ag^+]^2[CO_3^{2-}][/tex]

[CO3^2-]=0.00620M

Ksp =[Ag+}^2 x 0.00620

8.1x10^-12 = x^2 x 0.00620

x = [tex]\sqrt{8.1*10^{-12}/0.00620}[/tex]

x = 3.6×10−5

In conclusion, the maximum concentration of Ag⁺ is

x = 3.6×10−5

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Answer:

565.4 K

Explanation:

Remember PV = nRT

630 * 50 =  25/28 * 62.4 T

T = 565.4 kelvin

Answer:

Oxygen enrichment of combustion air to increase flame temperatures by reducing the proportion of nitrogen used in the combustion process is of particular value to operators of high-temperature furnaces.

Answer:

From the given balanced equation, the valid mole ratio is four moles of Fe over 3 moles of moles of c02..

Explanation:

Mole ratio can be defined as the ratio of mole compound with the another.

Answer:

Socratic app

Explanation:

it will help you

The plumbing will be corroded and could lower the pH of natural water bodies

The term acidic waste water means water that has a low pH due to the presence of an acidic substance inside the waste water. As we know, citric acid has a low pH.

If this acid is disposed without proper neutralization, the plumbing will be corroded due to the fact that the acid will react with the plumbing material.

Also, this acidc waste could lower the pH of natural water bodies  when it gets into natural water bodies.

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The volume of carbon dioxide produced if 8.45 g of propane is burned would be 12.9 L

From the equation of the burning:

[tex]C_3H_8+ 5O_2 -- > 4H_2O+ 3CO_2[/tex]

The mole ratio of propane burned to carbon dioxide produced is 1:3.

Mole of 8.45 g propane = 8.45/44.1 = 0.19 moles

Equivalent mole of carbon dioxide produced = 0.19 x 3 = 0.57 moles

1 mole of any gas at STP = 22.4 L

0.57 moles of carbon dioxide at STP = 22.4 x 0.57 = 12.9 L

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The corresponding change in pressure in atm is 0.285 atm.

To solve the question, we need to know what pressure is.

This is the force per unit area acting on a surface.

The change in pressure in the mercury barometer is given by ΔP = ρgh where

So, ΔP = ρgh

= 13600 kg/m³ × 9.8 m/s² × 0.217 m

= 28921.76 kg/m-s²

= 28921.76 N/m²

= 28921.76 Pa

Since 1 atm = 101325 Pa

28921.76 Pa = 28921.76 Pa × 1 atm/101325 Pa

= 0.285 atm

So, the corresponding change in pressure in atm is 0.285 atm.

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#1

Intermolecular bonds:-

#Carbon monoxide

Formula:-

Molecular geometry

Drawing

Bonds=3

#Silicon tetrafluoride

Formula

geometry

Bonds=4

#Titanium (4) Sulfide

Geometry

Bonds=2

Answer:

True

Explanation:

This is true.

Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases is a true statement.

The main components of the Earth's atmosphere are nitrogen (78%) and oxygen (21%).

Atmosphere, the gaseous layer that surrounds the Earth, is composed of gases such as oxygen, hydrogen and carbon dioxide. It is divided into layers and ensures survival on the planet.

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Answer:

The energy required is 1.634×J, the wavelength is 1.215×m, and the kind of electromagnetic radiation is the ultraviolet radiation.

Explanation:

In the question above, the initial level = 1, and = 2. Then, we use Rydberg's equation to calculate the wavelength of the light absorbed by the atom during the transition.

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Let's calculate Equilibrium constant for the following reaction. [tex] \sf{K_c} [/tex]

if we balance the equation, we will get :

[tex] \qquad\sf{C_{(s)}+ CO_2\:{(g)} \leftrightarrow2\: CO_{(g)}} [/tex]

According to question ~

If a 50.00 mL of 0.0155 M HI(aq) is mixed with 75.00 mL of 0.0106 M KOH(aq), the pH of the final solution  is mathematically given as

pH=13.16

Generally, the equation for the Chemical reaction   is mathematically given as

2HI+Ba(OH_2)--->BaI2+2H2O

Therefore

pOH=-log{OH}

pOH=-log(6.52)

pOH=0.8142

In conclusion, for the pH

pH+pOH=14

pH=14-0.8142

pH=13.16

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