The valency of metals x,y and z are 1,2 and 3 respectively. What is fomulae of hydroxide

Answer:

he total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.

Explanation:

plssssssssssssss like and brainiest

Answer:

A) Chemical Change

Explanation:

Chemical changes occur when bonds are broken and formed between molecules or atoms. This means that one substance with a particular set of properties (such as melting point, color, taste, etc.) is turned into a different substance with different properties.

Answer:

Last option is the correct choice.

Explanation:

Number of protons = 60-33 = 27

Superscript 60 Subscript 27 upper C o.

Best Regards!

yeah, its D. 60/27Co

Answer:

mole

Explanation:

It is the unit of chemistry. It is called Avogadros numver

Answer:

Electromagnetic induction

Explanation:

i think

The low concentration of phosphates in soil solution can be attributed to factors such as adsorption, precipitation, and immobilization.

Phosphates (PO₄³⁻) are an essential nutrient for plant growth, and their availability in soil solution is crucial for plant uptake. However, several factors contribute to the low concentration of phosphates in the soil solution:

1. Adsorption: Phosphates have a strong affinity for soil particles, particularly clay and organic matter. They can readily adsorb onto the surfaces of these particles, reducing their concentration in the soil solution and making them less accessible to plants.

2. Precipitation: Phosphates can react with cations, such as calcium (Ca²⁺) and iron (Fe³⁺), to form insoluble compounds like calcium phosphate or iron phosphate. These precipitates further decrease the concentration of phosphates in the soil solution.

3. Immobilization: Soil microorganisms and organic matter can immobilize phosphates by incorporating them into their biomass. This immobilization process temporarily removes phosphates from the soil solution, limiting their availability to plants.

learn more about Precipitation here:

https://brainly.com/question/20925010

#SPJ4

Answer:

Explanation: Every electron has a single negative(-) charge, the addition of two electrons results in an oxygen ion with a charge of negative(−)2. This is  in fact true of every element located under oxygen in the periodic table.

P.S. hope this helps :)

Answer:

Lathanum

Explanation:

one in four  are the odds of acquiring an sexually transmitted infections

during a lifetime.

Sexually transmitted infections (STI) are described as the  infections or conditions that you can get from any kind of sexual activity involving your mouth, an_us, vagi_na or pe_nis.

The chances of getting an Sexually transmitted infections  from one unprotected encounter with a partner who is infected with syphilis, gonorrhea, or chlamydia are about 30 percent.

Learn more about Sexually transmitted infections at:

https://brainly.com/question/1304618

#SPJ4

Surfactants reduce the activation energy of the reaction to exert catalytic effects, making the catalyzed reaction more energetically favorable.  Option (C) is correct "Reducing the activation energy of the reaction".

Surfactants are chemical compounds that lower the surface tension between two liquids or between a liquid and a solid, which makes them useful in a wide range of industrial and domestic applications. They have the ability to exert catalytic effects through the reduction of activation energy of the catalyzed reaction.
Explanation:Surfactants are molecules that have both hydrophilic (water-loving) and hydrophobic (water-hating) ends. They reduce surface tension and interfacial tension between liquids and solids by adsorbing at the interface. In catalytic reactions, surfactants reduce the activation energy of the reaction by facilitating the movement of reactants from one phase to another or by stabilizing the transition state. This increases the rate of the reaction and decreases the activation energy. Thus, surfactants can act as effective catalysts for a variety of reactions.
Catalysis is the process of increasing the rate of a chemical reaction by adding a substance called a catalyst. A catalyst is a substance that increases the rate of a reaction without being consumed or permanently changed in the process. In a catalyzed reaction, the catalyst lowers the activation energy required for the reaction to occur. This allows the reaction to proceed at a faster rate, often with lower temperatures and pressures than would otherwise be required.

To know more about catalyzed reaction visit :

https://brainly.com/question/33366516

#SPJ11

282.45 ml of water is required to prepare 300 ml of 5.85% (w/v) NaCl aqueous solution

Given that you are asked to prepare 300 ml of 5.85% (w/v) NaCl aqueous solution.

The 5M NaCl stock solution is available. And the molecular weight of NaCl is 58.5 g/mol.

To find the volume of stock solution, we can use the formula given below:

The volume of stock solution = (Desired concentration x Desired volume) / Stock solution concentration

Now let us plug in the values to get the result;

Desired concentration = 5.85% (w/v)

Desired volume = 300 ml

Stock solution concentration = 5M

Now, the volume of stock solution required can be calculated as follows:

The volume of stock solution = (5.85% x 300 ml) / (5 M)Volume of stock solution = 17.55 ml

Therefore, you need 17.55 ml of 5M NaCl stock solution.

To find the amount of water we need to add, we can use the formula given below:

Amount of water = Desired volume - Volume of stock solution

Amount of water = 300 ml - 17.55 ml

Amount of water = 282.45 ml

Therefore, 282.45 ml of water is required to prepare 300 ml of 5.85% (w/v) NaCl aqueous solution.

Learn more about volume from the given link;

https://brainly.com/question/28058531

#SPJ11

Answer:this air polluction here.

Explanation:

air and soil polluction

Answer:

Later when they are older

Explanation:

brainliest/

The IUPAC name  of the oxyacid formed from chlorite is chlorous acid.

All oxyacids have the acidic hydrogen bound to an oxygen atom, so bond strength (length) is not a factor, as it is with binary nonmetal hydrides. Rather, the electronegativity of the central atom and the number of oxygen atoms determine oxyacid acidity. For oxyacids with the same central atom, acid strength increases with the number of oxygen atoms attached to it. With the same number of oxygen atoms attached to it, acid strength increases with increasing electronegativity of the central atom.

Compared to the salts of their deprotonated forms (a class of compounds known as the oxyanions), oxyacids are generally less stable, and many of them only exist formally as hypothetical species, or only exist in solution and cannot be isolated in pure form.

Thus, the IUPAC name  of the oxyacid formed from chlorite is chlorous acid.

Learn  more about oxyacids,here:

https://brainly.com/question/13628554

#SPJ12

Answer:

The area of a star's atmosphere between its photosphere and corona, such as that of the sun, is referred to as its chromospheric region

The expected cash collections for July are 10,580 units.

To calculate the expected cash collections for July, we need to consider the credit sales made in different months and the collection pattern given in the information provided.

Here's the calculation step-by-step:

1. Calculate the credit sales for June, July, August, and September:

  - June: 8,300 units

  - July: 14,000 units

  - August: 16,000 units

  - September: 17,000 units

2. Determine the collection pattern for credit sales:

  - 40% of credit sales are collected in the month of the sale

  - 60% of credit sales are collected in the following month

3. Calculate the expected cash collections for July:

  - July credit sales: 14,000 units

  - July collections (40% of July sales): 14,000 units * 40% = 5,600 units

  - June collections (60% of June sales): 8,300 units * 60% = 4,980 units

4. Add the July and June collections:

  - Total expected cash collections for July: 5,600 units + 4,980 units = 10,580 units

To know more about cash collections

https://brainly.com/question/29659526

#SPJ11

To inflate the baggie with a volume of 836 milliliters using nitrogen gas at a pressure of 1.05 atm and a temperature of 301 K, we can apply the ideal gas law. Using the equation PV = nRT and rearranging it to solve for the number of moles (n), we find that n = PV / RT, which yields approximately 0.08757 moles of nitrogen gas. By multiplying this value by the molar mass of nitrogen (28.02 g/mol for N₂), we can determine the mass of nitrogen gas needed, which comes out to be approximately 2.453 grams. Thus, around 2.453 grams of nitrogen gas are required to inflate the baggie to the desired volume.

To determine the mass of nitrogen gas needed to inflate the baggie, we can use the ideal gas law equation:

PV = nRT

Where:

P = Pressure = 1.05 atm

V = Volume = 836 mL = 0.836 L (converted from milliliters to liters)

n = Number of moles of gas (what we want to find)

R = Ideal gas constant = 0.0821 L·atm/(mol·K)

T = Temperature = 301 K

Rearranging the equation, we can solve for the number of moles (n):

n = PV / RT

n = (1.05 atm * 0.836 L) / (0.0821 L·atm/(mol·K) * 301 K)

n = 0.08757 mol (rounded to 5 decimal places)

Now, we can calculate the mass of nitrogen gas using the molar mass of nitrogen (N₂):

Molar mass of N₂ = 2 * atomic mass of nitrogen (N)

Atomic mass of N = 14.01 g/mol

Molar mass of N₂ = 2 * 14.01 g/mol

Molar mass of N₂ = 28.02 g/mol

Finally, we can calculate the mass of nitrogen gas (m) using the number of moles (n) and the molar mass (M):

m = n * M

m = 0.08757 mol * 28.02 g/mol

m = 2.453 g (rounded to 3 decimal places)

Therefore, approximately 2.453 grams of nitrogen gas are needed to inflate the baggie.

To know more about Molar mass, visit:

https://brainly.com/question/3658475

#SPJ11

Convert the mass of anhydrate to moles: Mass of anhydrate / Molar mass anhydrate =120.4g / 120.4g/mol = 1 mole MgSO4.

One of a body's fundamental properties is its mass. In spite of having the same amount of matter in theory, different atoms and elementary particles have been found to have different masses.

In modern physics, there are a number of conceptually distinct but physically equivalent conceptions of mass. Experimentally, the body's resistance to acceleration (change in velocity) in the presence of a net force can be quantified as mass, which is the same as inertia. The mass of the object affects the gravitational pull it exerts on other bodies.

To know more about the mass, click the link given below:

https://brainly.com/question/19694949

#SPJ1

Sulfur is a chemical element with an atomic number of 16, and it is supposed to be the least reactive element, thus people have known about it for thousands of years. Gold and carbon are also known to have existed for a very long time.

To learn more about sulfur, refer to:

https://brainly.com/question/30948686

The critical insulation thickness of a sphere, thermal conductivity of insulation is \(\rm K_c\) and the surface heat transfer coefficient of insulated sphere \(\rm h\), is δ\(\rm _{crit} = (2k_c / h) \times (D_i / D_o)\).

The critical insulation thickness of a sphere is the minimum insulation thickness required to prevent heat loss from the sphere to the surroundings.

The expression for the critical insulation thickness is given by:

δ\(\rm _{crit} = (2k_c / h) \times (D_i / D_o)\)

where:

- δ\(\rm _{crit}\) is the critical insulation thickness.

-\(\rm k_c\) is the thermal conductivity of the insulation material.

- h is the surface heat transfer coefficient of the insulated sphere.

- \(\rm D_i\) is the inside diameter of the sphere.

- \(\rm D_o\) is the outside diameter of the sphere.

This expression assumes that the heat transfer from the sphere to the surroundings is primarily by convection, and that the insulation is homogeneous and isotropic. The critical insulation thickness can be used to determine the optimal insulation thickness for a given application, to minimize heat loss and improve energy efficiency.

Therefore,  δ\(\rm _{crit} = (2k_c / h) \times (D_i / D_o)\) is the expression for the critical insulation thickness of sphere.

Learn more about critical insulation thickness here:

https://brainly.com/question/33789620

#SPJ4

Answer:

an energy level represents the three dimensional space surrounding nucleus where electrons are most likely to be.

Explanation:

The 3 general ways by which a system in equilibrium can be reversed are by changing the concentration of the reactants of products, changing the pressure of the system, and changing the temperature of the system.

Le Chatelier's principle state that when a reaction is in equilibrium and one of the constraints that affect the rate of reactions is applied to the system, the equilibrium shifts so as to cancel out the effects of the constraints.

The constraints being referred to by Le Chatelier are concentration, pressure, and temperature. Increasing or decreasing the pressure of a system in equilibrium will shift the equilibrium to the sides with the lower moles or higher moles respectively.

Increasing the concentration of the reactants will shift the equilibrium toward the product side while increasing the concentration of the products will shift the equilibrium toward the reactant side.

In the same vein, increasing the temperature of a system will sift the equilibrium towards the product if the system itself is endothermic. If the system is exothermic, a reversal will occur.

More on Le Chatelier's principle can be found here: https://brainly.com/question/2001993

#SPJ1

Answer:

The primary properties of visible light are intensity, propagation-direction, frequency or wavelength spectrum and polarization.

Explanation:

Answer:

intensive property I think

Explanation:

Combustion analysis of fluorene, a polycyclic aromatic hydrocarbon used to make dyes, plastics, and pesticides, produces 11.44 g CO2 and 1.80 g H2O. The empirical formula of fluorene C₆H₄.

CₓHₐ + O2 → CO2 + H2O Since the combustion is complete, so the total mass of the reactants is equal to the total mass of the reactants Therefore, Mass of O2 = (17.9 + 9.14) – 5.9 = 21.14 grams Here, the empirical formula for the hydrocarbon is CₓHₐ. So, now we have to need to determine the number of moles of the O2, CO2, and H2O :- Mole of CO2 = 17.9/44 = 0.4068 Mole of H2O = 9.14/18 = 0.5078 Mole of O2 = 21.14/32 = 0.6606. The empirical formula for the compound containing uranium and fluorine is UF6. Explanation: The empirical formula of a compound represents the lowest whole number ratio of elements in the compound. This ratio is represented by subscripts in the formula. by this information, we can consider that combustion analysis of fluorene, a polycyclic aromatic hydrocarbon used to make dyes, plastics, and pesticides, produces 11.44 g CO2 and 1.80 g H2O. The empirical formula of fluorene C₆H₄.

Learn more about Combustion:

brainly.com/question/14521417

#SPJ4

Answer:

Solutions with low pH have a sour taste.

Explanation:

For 50 ml of a 0.2 m solution of HCl, 0.01 moles of sodium hydroxide are required to neutralize it entirely.

Equation: H2O + NaOH + HCl = NaCl +

1 mol of HCl interacts with 1 mol of NaOH to produce H2O and NaCl.

It is already balanced in that equation. The same quantity of mol of HCl and NaOH must be neutralized because all of the coefficients are the same.

HCl has a volume of 50 ml, or 0.05 l. While using l will result in a result in mol, using ml is OK as long as the result is in mmol.

Since we are aware of the HCl volume AND concentration, we can get the mol of HCl: =×

                        =0.05×0.2

                        =0.01

The coefficients are the same once more. Therefore:

=0.01 es

Learn more about Moles here:

https://brainly.com/question/26416088

#SPJ4

First, let's remember the formula to calculate an object's density:

Then, we analyze what we have:

We need to determine the volume, so we transform our formula like this:

We replace our data:

Then, the answer is that the volume equals 12.4 cm^3.

Partial pressure of oxygen po2= Total pressure * Volume of gas

= 1 atm * 0.5l = 0.5 atmL

what is partial pressure?

Each gas in a mixture of gases has a partial pressure, which is the pressure that would exist if that gas alone filled the entire volume of the original combination at the same temperature.According to Dalton's Law, a perfect gas mixture's total pressure equals the sum of its constituent gases' individual partial pressures.

It claims that the overall pressure exerted by the combination of non-reactive gases is equal to the sum of the partial pressures of the various gases. The pressure applied by each individual gas in a gas mixture is referred to as partial pressure.

Thus,

Partial pressure = Total pressure * Volume of gas

= 1 atm * 0.5l = 0.5 atmL

To learn more about partial pressure from the given link below,

https://brainly.com/question/16118479

#SPJ4