answer both questions with explanation and answer will give brain list

Answer:

I think it would be B.

Explanation:

Answer:

Explanation:

In any empirical formula problem you must first find the mass % of the elements in the compound. ...

Then change the % to grams. ...

Next, divide all the masses by their respective molar masses. ...

Pick the smallest answer of moles and divide all figures by that.

Since our answer for magnesium is not close enough to round to the nearest whole number we must choose a factor to multiply all the figures by that will yield us whole numbers

Lastly, the coefficients calculated in the previous step will become the subscripts in the chemical formula.

Answer:

A Brønsted-Lowry acid is any species that can donate a proton (H +) to another molecule. A Brønsted-Lowry base is any species that can accept a proton from another molecule. In short, a Brønsted-Lowry acid is a proton donor (PD), while a Brønsted-Lowry base is a proton acceptor (PA).

A scientist that carelessly pours cultures of living microbes down the drain represents a type of bacterial pollution.

Bacterial pollution refers to the uncontrolled proliferation of bacteria in the surrounding environment and ecosystems.

In conclusion, a scientist that carelessly pours cultures of living microbes down the drain represents a type of bacterial pollution.

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Answer:

It is 98 degrees C.

Explanation:

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Answer →  As light travels a certain distance, the intensity of the light will decrease by a square of the distance.

Why →  The farther away the light is the dimer it gets but the close light gets the bright it gets

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Based on Table F, the chemical compound which is least soluble in water is: 1. [tex]AlPO_4[/tex].

Solubility can be defined as a terminology that describes how readily a chemical substance or compound can be dissolved in a solvent to form a solution.

In Chemistry, a chemical substance or compound is said to be soluble if it dissolves completely in a solvent such as water.

Based on Table F, the chemical compound which is least soluble in water is [tex]AlPO_4[/tex] because phosphates are generally insoluble.

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Answer:

The pistil and the stamen.

Explanation:

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The pistil and the stamen are the specialized  structures increase the probability of successful plant reproduction

Reproduction in Flowering Plants occur both asexually and sexually, flowering plants or angiosperms, use the sexual mode of reproduction.

Reproduction in Flowering Plants occurs in the flower as  both male and the female gametes are present in it, various parts of flower involve in the process of reproduction.

There are four important steps in the reproduction of flowering plants. such as Pollination, Gametogenesis, Fertilization

The flower is a specialized structure where reproductive part of the plant, containing the male and female reproductive organs which facilitate fertilization.

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Answer:

Option B.

Explanation:

First we convert 9.90 g of Pb(NO₃)₂ into moles, using its molar mass:

Then we convert moles of Pb(NO₃)₂ into moles of PbO, using the stoichiometric coefficients:

Now we convert 0.0299 mol PbO into grams, using its molar mass:

So 6.67 g is the theoretical yield. With that in mind we calculate the percent yield:

So the correct answer is option B.

Answer:

The three components of a chemical formula are the empirical formula, the molecular formula, and the structural formula.Hope this answer helps.

Answer:

Electrostatic smoke precipitators work by forcing dirty flue gas (the gas escaping from a smokestack) past two electrodes (electrical terminals), which take the form of metal wires, bars, or plates inside a pipe or smokestack

Explanation:

According to the mole concept , there are 184.8 grams in 4.62 moles of sodium hydroxide.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.Number of moles is given as, mass/ molar mass

∴mass=number of moles×molar mass

On substitution, mass= 4.62×40=184.8 g

Thus, there are 184.8 g in 4.62 mole of sodium hydroxide.

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Answer:

B. The limiting reactant determines the maximum amount of product that can be formed.

Answer:

A.  6.0 mol H₂O

Explanation:

3 mol O₂ x  [tex]\frac{2 mol H2O}{1 mol O2}[/tex] = 6 mol H₂O

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_BaS + _PtF2 → _BaF2 + _Pts

Barium Sulfide + Platinum(II) Fluoride = Barium Fluoride + Platinum(II) Sulfide.

=> 1 BaS + 1 PtF2 → 1 BaF2 + 1 PtS

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Answer:

8.05 x 10^25 atoms O

Explanation:

moles O = moles Al2(CO3)3 x (6 moles O/1 mol Al2(CO3)3) = 22.3 x 6 = 133.8 moles O

atoms O = moles O x Avogadro number = 133.8 x 6.02 x 10^23 = 8.05 x 10^25 atoms O

Answer:

hello

Bromate is a bromine oxoanion and a monovalent inorganic anion. It is a conjugate base of a bromic acid.

Explanation:

thanks

HCO3-

Sodium bicarbonate (IUPAC name: sodium hydrogen carbonate), is commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO3. It is a salt composed of a sodium cation (Na+) and a bicarbonate anion (HCO3−). Sodium bicarbonate is a white solid that is crystalline, but often appears as a fine powder.

Answer:

3.45E24

Explanation:

calculator I'm not that great at math but I'm good at science but that isn't really science but it's aix between it tho

Answer:

Br>Ge>Kr

Explanation:

Electron affinity is the energy change that results from adding an electron to a gaseous atom(Khan Academy). It is also defined as "the amount of energy released when an electron is attached to a neutral atom or molecule in the gaseous state to form a negative ion" (Wikipedia).

Electron affinity increases from left to right in the periodic table. However, the noble gases possess a complete outermost electron shell.

Hence, electron affinity can be raked from the most negative to the least negative for the three atoms as follows; Br>Ge>Kr

Units of the SI System

There are seven base units in the SI system:

the kilogram (kg), for mass

the second (s), for time

the kelvin (K), for temperature

the ampere (A), for electric current

the mole (mol), for the amount of a substance

the candela (cd), for luminous intensity

the meter (m), for distance

Answer: [tex]BaCl_2[/tex] is the limiting reagent and [tex]Al_2(SO_4)_3[/tex] is the excess reagent.

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of aluminium sulphate}=\frac{150g}{342.15g/mol}=0.438moles[/tex]

[tex]\text{Moles of barium chloride}=\frac{200g}{208.23g/mol}=0.960moles[/tex]

The balanced chemical reaction is:

[tex]Al_2(SO_4)_3+3BaCl_2\rightarrow 2AlCl_3+3BaSO_4[/tex]  

According to stoichiometry :

3 moles of [tex]BaCl_2[/tex] require = 1 mole of [tex]Al_2(SO_4)_3[/tex]

Thus 0.960 moles of [tex]BaCl_2[/tex] will require=[tex]\frac{1}{3}\times 0.960=0.320moles[/tex]  of [tex]Al_2(SO_4)_3[/tex]

Thus [tex]BaCl_2[/tex] is the limiting reagent as it limits the formation of product and [tex]Al_2(SO_4)_3[/tex] is the excess reagent as it is left.

Answer:

the pasta will soften

Explanation:

the pasta will boil and will soften up as a result of it being regular pasta

Answer:

The impact of dinosaurs caused Dwayne Johnson to beat paper in rock paper scissors as the weak strength of the plants on the moon are diabolical in the atmosphere.

Explanation:

Thats why me and Selena Gomez share the same light bulb.

hmm.......iphone ¯\_(ツ)_/¯

Answer: A) H-H is least polar

Explanation:

Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself. The more is the difference in electronegativity, the more polat the bond is.

1. H-H : Electronegativity difference = electronegativity of hydrogen - electronegativity of hydrogen =2.1 -2.1= 0

2.   H-Cl : Electronegativity difference = electronegativity of chlorine - electronegativity of hydrogen = 3-2.1 = 0.9

3. H-F : Electronegativity difference  = electronegativity of fluorine - electronegativity of hydrogen= 4-2.1= 1.9  

4.   H-I : Electronegativity difference = electronegativity of iodine - electronegativity of hydrogen= 2.5 -2.1= 0.4

Thus the least electronegativity difference between the bonded atoms is in H-H , this is least polar.

Answer:

120.366 g/mol

Explanation:

Answer: I believe it's C

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Can you please make my answer brainly