helpppp in a chemical equation, in which direction does the "yields" arrow point, and what factor does it indicate?

It points to the left, toward the reactants.
It points to the left, toward the products.
It points to the right, toward the reactants.
It points to the right, toward the products.

The valency of magnesium is 2 because it has two valence electrons in its outermost shell. Magnesium belongs to the second group of the periodic table, which means it has two electrons in its outermost shell or valence shell. In order to achieve a stable configuration, magnesium tends to lose these two valence electrons to form a positively charged ion with a charge of 2+. This makes magnesium a bivalent or divalent element with a valency of 2.

Answer:

Because the outer shell of magnesium contains 2 atoms

Answer:

M=0.816M

Explanation:

Hello,

In this case, we should consider the following reaction:

\(AgNO_3+KCl\rightarrow KNO_3+AgCl\)

Thus, by knowing the 1:1 molar ratio of silver nitrate and potassium chloride, we can easily compute the moles of silver nitrate precipitating the 1570 mg of potassium chloride considering its molar mass of 74.5513 g/mol:

\(n_{AgNO_3}=1570mgKCl*\frac{1gKCl}{1000mgKCl} *\frac{1molKCl}{74.5513gKCl}*\frac{1molAgNO_3}{1molKCl} \\\\n_{AgNO_3}=0.021molAgNO_3\)

Then, by using the volume of silver nitrate in liters (0.0258 L), we can directly compute the molarity:

\(M=\frac{0.021molAgNO_3}{0.0258L}\\ \\M=0.816M\)

Regards.

Answer:

0.8853 mL

Explanation:

First we convert 13 lb to kg, keeping in mind that 1 lb = 0.454 kg:

Then we calculate how many mg of acetaminophen should be given, using the recommended dose and infant mass:

Finally we calculate the required mL of suspension, using its concentration:

Answer: no answer

Explanation:

Answer:

Hydrogen chloride is a mixture of hydrogen and chlorine elements. The chemical abbreviation of hydrochloric acid is HCl.

Explanation:

The transformation of inputs into outputs is referred to as the production process.

A production process is a way to use economic resources, such as labor, expensive machinery, or land, to create goods and services for customers.

The transformation of inputs into outputs is referred to as the production process. The primary categories include mass, batch, job, just-in-time, and flexible manufacturing systems.

A production process is a method of delivering goods and services to clients while utilizing resources or economic inputs like labor, expensive machinery, or land.

Therefore, the correct answer is option A. analyze existing resources, such as water availability

The complete question is:

Society decides that it needs to produce more corn to feed the growing population. What must it do before it begins the production process?

A. analyze existing resources, such as water availability

B. determine how people will receive the surplus crops

C. study the profitability of increasing corn production

D. understand who is in a position of authority to produce more

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Answer:

follow the picture,,, it includes the normal elements too

The reason why I organized these specific elements from the list of elements that you provided me is because they have to do with color. I believe organizing by color would be much easier for me to understand. There is also a somewhat equal amount  for each color. For example I used the colors: orange, green and red In my chart because there are four of each color in the list you provided me.

Answer:

True if by rifting you mean continental rift. If not idk.

6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

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Answer:

98N

Explanation:

fg=mg

=(10)(9.8)

=98N

Based on the given reaction, the acid-base pairs in this reaction are:

An acid-base pair refers to a set of two chemical species that are related through the transfer of a proton (H+ ion) during a chemical reaction.

One species acts as an acid by donating a proton, while the other acts as a base by accepting that proton.

In the given reaction:

HCO₃⁻ (aq) + NH₃ (aq) → NH₄⁺ + CO₃²⁻

An acid-base pair can be identified as follows:

HCO₃⁻ (bicarbonate ion) can act as an acid by donating a proton (H⁺), becoming CO₃⁻.

NH₃ (ammonia) can act as a base by accepting a proton (H⁺), becoming NH₄⁺ (ammonium ion).

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First, we need the reaction:

2N2 (g) + O2 (g) → 2N2O (g)

Molecular weights:

N2 = 28.01 g/mol

N2O = 44.01 g/mol

For this exercise we use Stoichiometry.

Always balance your reaction.

---------------------------------------------------------------------------------

We know that:

2 x 28.01 g N2 -------------------- 2 x 44.01 g N2O

X -------------------- 5.80 g N2O

Answer: 3.69 grams of N2 are needed.

Hydrophosphoric acid is generally known as phosphine and the formula for hydrophosphoric acid is PH3 P H 3

Hypophosphoric acid is a mineral acid with phosphorus in an oxidation state +4.It has a chemical formula H4P2O6.

Hypophosphorous acid is used as a decolorizing agent and for color stabilization during the manufacture of chemicals and several plastics including: nylon fibers, polyamides, polyester fiber, polyacrilonitrile, alkyd rsins, epoxies, fatty acid esters and glycerols.

Therefore, the formula of hypophosphoric acid is H4P2O6. It contains four P-OH bonds, Two P=O. bonds and one P-P bond.

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In the bicycle assembling process, the limiting reactant is seats since they will be used up first.

A limiting reactant is a reactant which is used up first in a reaction and on which product formation depends on.

In a given reaction, once the limiting reactant is used up, the reaction will stop.

For a bicycle to be assembled, 1 frame, 1 seat, 1 seat of handlebars, 1 seat of pedals and 2 tires are required.

In the process of assembling bicycles, there are 114 frames, 300 tires, 75 seats, 109 sets of pedals, and 84 sets of handlebars.

Therefore, the limiting reactant is seats since they will be used up first.

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Answer:

Explanation:

If an electron is in an excited state it can return to a lower energy level. When it does this, it loses energy. The amount of energy it loses will be equal to the difference in the energy levels it moves between. This energy is released as a photon.

The percentage abundance of the isotope Z-20 is 10.8 % and that of second isotope Z-22 will be 100 -10.8 = 89.2 %.

Isotopes are atoms of same atomic number and different mass number. An element can have two or more isotopes.  The percentage abundance of each isotopes in the nature will be different.

Given that the average atomic mass of Z is 21.5 amu. It is  the sum of products of the mass and abundance of each isotopes. Let x be the % abundance of Z-20 and 100-x for Z-22, now it can be written as:

20 x +  22 (100 - x ) = 21.5

20 x - 2200 -22x = 21.5

 2x = 2200-21.5

 x/100 = 10.8 %.

Therefore percentage abundance of Z-20 is 10.8 % and that of Z-22 is 100 - 10.8 = 89.2 %.

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The amount of copper in moles in the 27.5 g pure copper sheet is approximately 0.433 moles.

To calculate the amount of copper in moles in a pure copper sheet, we need to use the molar mass of copper and the given mass of the sheet.

The molar mass of copper (Cu) is approximately 63.55 g/mol. This value represents the mass of one mole of copper atoms.

Given that the mass of the pure copper sheet is 27.5 g, we can calculate the number of moles using the following formula:

moles = mass / molar mass

Substituting the values:

moles = 27.5 g / 63.55 g/mol

moles ≈ 0.433 mol

Therefore, the amount of copper in moles in the 27.5 g pure copper sheet is approximately 0.433 moles.

To arrive at this result, we divided the given mass of the sheet (27.5 g) by the molar mass of copper (63.55 g/mol). This calculation allows us to convert the mass of the sheet into the corresponding number of moles of copper.

The result tells us that the 27.5 g pure copper sheet contains approximately 0.433 moles of copper atoms. This conversion to moles is useful in various chemical calculations and allows for easier comparison and analysis of quantities on a molecular scale.

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Answer:

V = 48.64 L

Explanation:

Given data:

Mass of CO₂ = 85.63 g

Temperature = 273 K

Pressure = 1 atm

Volume of CO₂ = ?

Solution:

Number of moles of CO₂:

Number of moles = mass/molar mass

Number of moles = 85.63 g / 40 g/mol

Number of moles = 2.14 mol

Volume in Litter:

PV = nRT

R = general gas constant = 0.0821 atm.L/mol.K

1 atm× V = 2.14 mol ×0.0821 atm.L/mol.K  ×273 K

V = 48.64 atm.L / 1 atm

V = 48.64 L

Answer:

Most aren't able to take in carbon dioxide gas from the air or produce any oxygen.

Explanation:

science bro

Answer:

Na2S2O3.

Explanation:

What is given?

If we suppose that the compound has a mass of 100 g:

Mass of Na = 29.1 g,

Mass of S = 40.5 g,

Mass of O = 30.4 g,

Molar mass of Na = 23 g/mol,

Molar mass of S = 32 g/mol,

Molar mass of O = 16 g/mol.

Step-by-step solution:

First, we have to convert all the given masses of each element to moles using their respective molar mass, like this:

The next step is to divide each number of moles by the least number of moles obtained, which in this case is 1.27, as follows:

Remember that we need to have the number of moles of each element as integers, so if we multiply each number of moles of each element by 2, we will obtain:

We would have 2 mol of Na, 2 mol of S, and 3 mol of O, so the empirical formula is Na2S2O3

Explanation:

Uranium is classified as a transition metals.

0.49 M is the molarity of the 4.9% \(H_{2}SO_{4}\) solution.

To find the molarity of a solution, we need to calculate the number of moles of the solute (\(H_{2}SO_{4}\)) present in a given volume of the solution. Here's how to determine the molarity of a 4.9% \(H_{2}SO_{4}\)solution with a density of 0.98 g/ml:

Determine the mass of the solute: The 4.9% concentration implies that 4.9 g of \(H_{2}SO_{4}\) is present in 100 g of the solution.

Calculate the volume of the solution: Divide the mass of the solution by its density. In this case, 100 g / 0.98 g/ml = 102.04 ml.

Convert the volume of the solution to liters: Divide the volume by 1000 to convert from milliliters to liters. 102.04 ml / 1000 = 0.10204 L.

Calculate the number of moles: Multiply the mass of the solute by its molar mass. The molar mass of \(H_{2}SO_{4}\) is 98.09 g/mol. Therefore, 4.9 g / 98.09 g/mol = 0.0499 mol.

Calculate the molarity: Divide the number of moles by the volume of the solution in liters. 0.0499 mol / 0.10204 L ≈ 0.49 M.

Thus, the molarity of the 4.9% \(H_{2}SO_{4}\) solution is approximately 0.49 M.

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Answer:

i) The size of X ion is greater than that of X atom even though both contain the same number of protons because the ion has fewer electrons compared to the atom. When an atom forms an anion (negative ion), it gains electrons, which causes increased electron-electron repulsion. This repulsion causes the electron cloud to expand, and as a result, the ion becomes larger than the neutral atom.

In the case of element X, when it forms an ion with a -3 charge, it will gain 3 more electrons, increasing the total number of electrons to 18. This will cause the size of the X ion to be larger than the neutral X atom.

ii) To determine the compound of X in the -3 oxidation state, we first need to determine the element's identity. We know that X has 15 electrons in total (2 in the K shell, 8 in the L shell, and 5 in the M shell). Therefore, X has an atomic number of 15, which corresponds to phosphorus (P).

Since phosphorus is in the -3 oxidation state, it gains 3 electrons and becomes P^3-. To form a compound, we need a cation that can balance the negative charge. A common example is aluminum (Al), which has a +3 charge (Al^3+). When phosphorus and aluminum combine, they form the compound aluminum phosphide with the formula AlP.

0.25 J/gºC

The formula for calculating the heat absorbed by the metal is expressed as:

where;

m is the mass of the object

c is the specific heat capacity

△t is the change in temperature

Given the following parameters

m = 500g

△t = 78 - 25 = 53°C

Q = 6.64kJ = 6640Joules

Substitute

Therefore the specific heat capacity of this metal is 0.25 J/gºC

Answer:

We need more? What else is in the question? This is unanswerable.

Explanation:

Answer:

gas

Explanation:

gas: indefinite shape, indefinite volume. Indefinite shape means that the sample in question takes on the shape of the container.

Answer:

ρ = 1.08 g/cm³

Explanation:

Step 1: Given data

Mass of the substance (m): 21.112 g

Volume of the substance (V): 19.5 cm³

Step 2: Calculate the density of the substance

The density (ρ) of a substance is equal to its mass divided by its volume.

ρ = m / V

ρ = 21.112 g / 19.5 cm³

ρ = 1.08 g/cm³

The density of the substance is 1.08 g/cm³.

Answer:

1 tablet

Explanation:

Assuming that gm stands for gram:

Put everything in one unit, 0.3 g = 300 mg.

And given that each tablet is 300 mg:

mass/amount = 300mg / 1 tablet

300mg / X amount = 300mg / 1 tablet

(300mg/300mg) tablet = X = 1 tablet

So it is 1 tablet you need.

One tablet should be given. A dosage is a set quantity of medication administered all at once.

A dosage is a set quantity of medication administered all at once. Contrarily, the dosage is the recommended way to take the drug: a specified quantity, amount, and regularity of doses spread over a specific amount of time.

To put it another way, a dosage is simply the quantity of medication that you consume at one particular moment. The dosage consists of the pharmacological dose, or amount, as well as the timing and frequency of administration. How you should administer or take the recommended medication is determined on the dosage.

0.3 g = 300 mg.

each tablet is 300 mg:

mass/amount = 300mg / 1 tablet

300mg / X amount = 300mg / 1 tablet

(300mg/300mg) tablet = X = 1 tablet

Therefore, one tablet should be given.

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The Medal of Honor is the best navy decoration and highest volume.

The President of the USA The Victoria go is the holy grail for Medal of Honor creditors because there are the best in lifestyles. Bearing the inscription For valor and called a VC, this medal turned into first offered for conspicuous bravery' in 1856 and later backdated to the Crimean conflict of 1854. The outstanding service pass is the second maximum army ornament that may be provided to a member of the American military, for intense gallantry and risk of lifestyle in actual combat with an armed enemy force.

The Bronze Star Medal dates lower back to world battle II. these days, it is the fourth-maximum ranking award a provider member can obtain for a heroic and meritorious deed performed in an armed battle. For individuals who acquire the BSM, it's far a sign of their sacrifice, bravery, and honor at the same time as serving their us of a

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