Which compound in each pair is more soluble in water?(a) Manganese(II) hydroxide or calcium iodate

Al₂(SO₄)₃

= 2.Al+3.S+12.O

= 2.27 + 3.32+12.16

= 54+96+192

=342 g/mol

Answer:

The correct answer is 10 core electrons and one valence electron.

Explanation:

The electrons in an atom, which are not valence and do not take part in chemical bonding are known as core electrons. The core electrons and the nucleus of an atom produces the atomic core. These core electrons are held tightly with the nucleus. On the other hand, the outer shell electrons, which are associated with an atom and take part in the generation of a chemical bond is the outer shell is open are known as valence electrons.

In the given question, the atomic number of an element is 11, thus, the electronic configuration will be,

1S² 2S² 2P⁶ 3S¹

Hence, there is only one valence electron and 10 core electrons.

Answer:

I'm pretty sure you have it correct

Answer:

Nonrenewable

Explanation:

There is a finite supply of fossil fuels

The s and three p orbitals of carbon overlap with the 1s orbitals of hydrogen to form bonds.

An atomic orbital is an area in which the risk of an electron happening is at its maximum stage. A subshell is a path taken by using electrons as they pass around inside the shell's confines. Subshells are categorized into four categories. The subshells are denoted by using the letters s, p, d, and f.

In atomic idea and quantum mechanics, an atomic orbital is a feature describing the region and wave-like conduct of an electron in an atom. This function can be used to calculate the possibility of locating any electron of an atom in any unique region across the atom's nucleus. The term atomic orbital might also talk over with the bodily area or space where the electron may be calculated to be present, as predicted by the specific mathematical form of the orbital.

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Answer:

chlorine and I think maybe sulphur. but check the internet

Answer:

chlorine I think so . sorry if it ain't the right answer

Explanation:

c2H5

|

cH3 _ c _ c H2 _ c H3

|

c2H5

cH3

|

cH3_ cH _ cH_ cH2_ cH3

|

cH3

Baking powders contain at least two active ingredients: a base and an acid. Baking soda (sodium bicarbonate) is responsible for the production of carbon dioxide (CO2) gas during baking.

Baking powders typically contain at least two active ingredients: a base and an acid. The base is usually baking soda (sodium bicarbonate), and the acid can be cream of tartar (potassium bitartrate), sodium acid pyrophosphate, or a combination of acids.

Among these ingredients, baking soda (sodium bicarbonate) is primarily responsible for the production of carbon dioxide (CO2) gas. When baking soda reacts with the acid in the presence of moisture, it undergoes a chemical reaction called acid-base reaction or neutralization reaction. This reaction produces carbon dioxide gas, which creates bubbles and causes the dough or batter to rise. The release of carbon dioxide gas during baking gives the baked goods their characteristic texture and lightness.

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Answer:

I imagine the answer would be Charles Darwin's theory of natural selection.

Explanation:

Natural selection explains that some organisms, like animals, possess inheritable traits that allow them to better survive within and adapt to their environment, compared to other organisms. That species will be able to outlive those without the trait(s) as they have more opportunities to reproduce and pass their inherited genes onto the next generation. This is why "natural selection" most fits within question number 3's blank space.

The model that supports the evidences hat we have garnered from the experiment is the Bohr model.

We know that there are various models that can be used to obtain the structure of the atom. For each of the various models that try to explain the structure of the atom, there are experimental evidences.

In the case of the hydrogen atom atom as we have in this experiment, the model of the atoms that is supported is the Bohr model of the atom. According to the Bohr model of the atom, electrons in atoms are found in certain specific energy levels.

The electron would tend to release energy in the force of the photon of visible light when it moves from a higher to a lower energy level as we can see in the experiment. Thus the Bohr model suffices from the structure of the atom in this experiment.

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Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case

Answer:

Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.

Explanation:

Answer:

The track of the Moon's shadow across Earth's surface is called the Path of Totality. This path is typically 16,000 kilometers (about 10,000 miles) long but only 160 kilometers (100 miles) or so wide. In order to see the Sun totally eclipsed by the Moon you must be in the path of totality.

Explanation:

Answer:

https://newshamchem.weebly.com/uploads/2/2/0/3/22035226/molarity_&_worksheet_answer.pdf

question 9.

Explanation:

Answer:

.0125 moles

Explanation:

Molarity = moles/volume

.05 M = moles/.250L

.0125 = moles

Answer:

Kₑq = [H₂]² [O₂] / [H₂O]²

Explanation:

We'll begin by defining equilibrium constant for a reaction. This is given below:

The equilibrium constant for a given reaction is defined as the ratio of the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient.

With the above information in mind, we shall determine the equilibrium constant for the reaction given in the question above. This is illustrated below:

2H₂O (g) <=> 2H₂ (g) + O₂ (g)

Kₑq = [H₂]² [O₂] / [H₂O]²

answer:

science!

scientists discovered the table of periodic elements, and over time they discovered more and more, so thats how we know about so many different ones!

explanation:

hope this helped <3 also if wouldn't mind could you pls give me brainliest? (im trying to level up) thanks! :)

Answer:9.8

Explanation:right answer

Answer:

[Ar] 4s²

Explanation:

Answer:

iiiiii<iiiiii

Explanation:

Answer:

4/J

Explanation:

Remember the triangle

m

v d

d=m/v

do this for the 4 questions.

1.7.36

2.10.5

3.1,846

4.2.71

so it would be 4

good luck!!!!

Answer:

89-91=1 the answer is 1molar mass

In the experiment, each tube used for a specific purpose. The purpose of each tube used in the experiment is listed below :Tubes used in the experiment: A Durham tube is a test tube containing Durham fluid which is used to detect the production of gas.

Tube 1: Glucose, Durham, and inverted tubeTubes 2-3: Starch, Durham, and inverted tubeTube 4: Lactose, Durham, and inverted tubeTube 5: Sucrose, Durham, and inverted tubeTube 6: No sugar, Durham, and inverted tubeThe controls in the experiment: Tube 6: No sugar, Durham, and inverted tube

The experiment demonstrates how bacteria ferment different sugars. The test is performed using a Durham tube that contains a small, inverted glass vial within the test tube.The small, inverted vial is used to capture any gas that is produced by bacteria fermentation. In each tube, a different type of sugar is used to test if bacteria is able to ferment the sugar. A Durham tube is used for all of the sugar-containing tubes, except for the no sugar control, which also has a Durham tube.

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Answer:

Fire is something that's red and sorta orange is hot and can burn you but fire can be good and bad at some points for example fire can be used as a campfire,fireplace at home,and lighting candles. Fire is also very dangerous tho ,you can burn yourself if your not careful it can light your house on fire and that wouldn't be very safe. In simple words i would say fire is something that can have advantages and disadvantages.

Ahhh hope thats alright im on online classes but i wanted to help!!

Answer:

This would depend on the intensity or the size of a fire.

Explanation:

For instance, a small fire could be described as: kindled, flickering, dancing (in the case of a candle flame), smoldering, or crackling.

A medium size fire, such as a camp fire or a fireplace could be described as: crackling, blazing, burning, or roaring.

While a large or very intense fire (such as a forest fire or a house fire) could be described as: roaring, blazing, burning out of control, consuming, raging, or destroying.

If you were more looking for synonyms of ‘fire’, here are a few of my favorites: flame, blaze, incinerate, immolation, and inferno. (Edited to add a few I remembered: pyre, conflagration, and scorching.)

Answer:

Metallic Bonding

Explanation:

Zinc is a metal, as such it's atoms are held together by the metallic bond. Metallic bond is a type of chemical bond formed between positively charged ions in which there is a collective sharing of a sea of valence electrons.

Answer:

Molality of glucose is 7×10⁻¹⁰ mol/Kg

Explanation:

\(Molality = \frac{Moles of solute}{Kg of Solvent}\)

you need to do 2 things before use this formula:

1. Transform 6.36 g of glucose into moles

2. Transform 500 mL of water into grams

1. To transform 6.36 g of glucose into moles, we need to know the molar mass of glucose. The molecular formula of glucose is C₆H₁₂O₆

Molar Mass of:

O = 16

H = 1

C = 12

So, to calculate the molar mass of glucose:

(6x12)+(12x1)+(16x6) = 72 + 12 + 96 = 180 g/mol

Now:

6.36 g of glucose --- x moles

180 g of glucose --- 1 mol

x = 6.36/180

x = 0.035 moles

2. First, transform 500 mL into L = 0.5 liters.

To transform 500 mL of water into grams we need to know the density of the water. It is 997 Kg/m³.

liters to m³:

1 liter --- 0.001 m³

0.5 --- x

x = 5×10⁻⁴ m³

997 Kg --- 1 m³

5×10⁻⁴ --- x

x = 5×10⁻⁷ Kg

Now: 0.035 moles/5×10⁻⁷ Kg =

Molality of glucose is 7×10⁻¹⁰ mol/Kg

Answer: I believe you are talking about the world's first recorded nuclear explosion that took place on the plains of the Jornada del Muerto Dessert.

Explanation: It is to be noted that the Trinity site is still considered to be radioactive, and Trinitite which is a green glass-like substance is found abundantly in the area. Trinity was an atmospheric test conducted by the U.S. Army on July 16th of 1945. The site was chosen because of its isolated, flat grounded, non-windy lands. This experiment was so tightly gatekept that not even the military policemen whom rode with it knew of its contents.

4.01 x 1012 grammes of beryllium contain 4.45 x 1011 moles of beryllium. The chemical element beryllium has the atomic number 4 and the letter Be assigned to it. Alkaline earth metal is brittle, steel-gray, strong, and light.

The formula: can be used to determine how many moles of a material there are.

Molar mass divided by mass equals a mole.

Beryllium has a molar mass of 9.012 g/mol.

Therefore, we can perform the following calculation to determine how many moles of beryllium there are in 4.01 x 1012 grammes of beryllium:

4.01 x 10-12 grammes are equal to 9.012 grammes per mole.

4.45 x 1011 moles are one mole.

Therefore, 4.01 x 1012 grammes of eryllium contain 4.45 x 1011 moles of eryllium.

Note that both numbers must have the same exponent when writing in scientific notation, and that you must use a calculator to perform the calculation if you don't want to receive the wrong answer.

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Answer:  What Happens When the Bonds in the Atoms in the Reactants Break​?

Explanation: In a chemical reaction, bonds between atoms in the reactants are broken and the atoms rearrange and form new bonds to make the products.

A Visual Example Would Look Something Like This:

To find the concentration of the unknown oxalic acid solution, we need to use the balanced chemical equation for the reaction:NaOH + H₂C₂O → H₂O + Na₂C₂O₁

From the equation, we can see that the mole ratio between sodium hydroxide (NaOH) and oxalic acid (H₂C₂O) is 1:1. First, we need to determine the number of moles of NaOH used in the titration. The molar mass of NaOH is 22.99 + 16.00 + 1.01 = 40.00 g/mol. Therefore, the number of moles of NaOH is:moles of NaOH = mass of NaOH / molar mass of NaOH

= 22 g / 40 g/mol

= 0.55 mol

Since the mole ratio between NaOH and H₂C₂O is 1:1, the number of moles of H₂C₂O is also 0.55 mol.Now, we can determine the concentration of the oxalic acid solution using the volume of the acid used in the titration. The volume is given as 14.9 mL, which is equivalent to 0.0149 L. concentration of oxalic acid (C) = moles of H₂C₂O / volume of H₂C₂O

= 0.55 mol / 0.0149 L

≈ 36.91 mol/L.Therefore, the concentration of the unknown oxalic acid solution is approximately 36.91 mol/L.

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To calculate the mmols of KCl received by the patient, follow these steps: Determine the total volume of fluid administered: 80 mL/hr * 8 hours = 640 mL. Calculate the proportion of the 1L bag administered: 640 mL / 1000 mL = 0.64.

The total volume of fluid the patient has received is 80 mL/hr x 8 hours = 640 mL. Each bag contains 20 mEq of KCl, which is equivalent to 20 mmols of KCl (since the MW of K is 39 and the MW of Cl is 35.5).
To calculate how many mmols of KCl the patient has received, we need to determine how many bags were given. Since each bag contains 1L (1000 mL) of fluid, the patient would have received 640 mL ÷ 1000 mL/bag = 0.64 bags. Therefore, the patient has received 0.64 bags x 20 mmols of KCl per bag = 12.8 mmols of KCl. Rounding to the nearest TENTH gives us an answer of 12.8 mmols of KCl.

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The patient has received approximately 12.8 mmol of KCl in the 8 hours during which the fluid was administered. This is calculated based on the proportionality of the KCl in 1L premixed bag to the 640 mL received by the patient.

The patient's fluid contains

20 mEq

KCl in a

1L

premixed bag. JF's fluid has been running at

80 mL/hr

for 8 hours, thus a total of 640 mL of fluid have been administered. To find out how many millimoles (mmol) of KCl the patient has received, we need to apply proportionality. In 1L (or 1000 mL), there are 20 mEq of KCl, so we can set up this ratio: 20 mEq KCl is to 1000 mL as 'X' mEq KCl is to 640 mL. Solving for 'X' provides X = 20 mEq * 640 mL / 1000 mL = 12.8 mEq. Since the molecular weight (MW) of K is

39

, and mEq is calculated as millimoles (mmols) times valence, in KCl, the valence of K is 1, so 1 mEq = 1 mmol. Hence, the patient has received 12.8 mmol of KCl.

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If a gas in a balloon occupies 2.25 L at 298 K and 300 kPa, the temperature at which the balloon expand to 3.50L and 2.17 atm is 345.23K.

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

P1V1/T1 = P2V2/T2

Where;

According to the information given in this question;

2.96 × 2.25/298 = 2.17 × 3.5/T2

0.022T2 = 7.595

T2 = 7.595 ÷ 0.022

T2 = 345.23K

Therefore, if a gas in a balloon occupies 2.25 L at 298 K and 300 kPa. the temperature at which the balloon expand to 3.50L and 2.17 atm is 345.23K.

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