4 main parts of a flower Include the function of each pls help me

Answer:

Complete ionic: 2Cr(3+) + 6(NO3)- + 3Ba = 2Cr + 3Ba(2+) + 6(NO3)-

Net ionic; 2Cr(3+) + 3Ba = 2Cr + 3Ba(2+)

Explanation:

We are given;

Cr(NO3)3 (aq) + Ba (s)

Let's first find the product of this reaction before getting the complete and net ionic equations.

2Cr(NO3)3 + 3Ba = 2Cr + 3Ba(NO3)2

The complete ionic equation will be;

2Cr(3+) + 6(NO3)- + 3Ba = 2Cr + 3Ba(2+) + 6(NO3)-

The net ionic equation is gotten by eliminating the spectator ions from both left and right hand sides of the equation.

Thus, net ionic equation is;

2Cr(3+) + 3Ba = 2Cr + 3Ba(2+)

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

We have

[tex]n = \frac{1.00 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{1}{6.02} \\ = 0.166112[/tex]

We have the final answer as

Hope this helps you

Hydrochloric acid: HCl(aq)

Sodium hydroxide: NaOH(aq)

The two substances react in an acid-base neutralization reaction to produce aqueous sodium chloride and liquid water.

The complete ionic equation is:

H⁺(aq) + Cl⁻(aq) + Na⁺(aq) + OH⁻(aq) → Na⁺(aq) + Cl⁻(aq) + H₂O(l).

Answer:

[tex]50\; \rm mL[/tex] of the stock solution would be required.

Explanation:

Assume that a solution of volume [tex]V[/tex] contains a solute with a concentration of [tex]c[/tex]. The quantity [tex]n[/tex] of that solute in this solution would be:

[tex]n = c \cdot V[/tex].

For the solution that needs to be prepared, [tex]c = 0.20\; \rm M = 0.20\; \rm mol \cdot L^{-1}[/tex]. The volume of this solution is [tex]V = 250.0\; \rm mL[/tex]. Calculate the quantity of the solute (magnesium chloride) in the required solution:

[tex]\begin{aligned}n &= c \cdot V \\ &= 0.20\; \rm mol \cdot L^{-1} \times 250.0\; \rm mL \\ &= 0.20\; \rm mol \cdot L^{-1} \times 0.2500\; \rm L \\ &= 0.050\; \rm mol\end{aligned}[/tex].

Rearrange the equation [tex]n = c \cdot V[/tex] to find an expression of volume [tex]V[/tex], given the concentration [tex]c[/tex] and quantity [tex]n[/tex] of the solute:

[tex]\displaystyle V= \frac{n}{c}[/tex].

Concentration of the solute in the stock solution: [tex]c(\text{stock}) = 1.00\; \rm M = 1.00\; \rm mol \cdot L^{-1}[/tex].

Quantity of the solute required: [tex]n = 0.050\; \rm mol[/tex].

Calculate the volume of the stock solution that would contain the required [tex]n = 0.050\; \rm mol[/tex] of the magnesium chloride solute:

[tex]\begin{aligned}& V(\text{stock}) \\ &= \frac{n}{c(\text{stock})} \\ &= \frac{0.050\; \rm mol}{1.00\; \rm mol \cdot L^{-1}} \\ &= 0.050\; \rm L \\ &= 50\; \rm mL\end{aligned}[/tex].

Answer:

 They both are made up of atoms and having bonds linking their atoms together.molecules and compounds also share the qualities of being both pure and homogeneous substances.

Explanation:

Hope this helped!!!

Answer:

a

Explanation:

The solution that has the highest concentration given the data is solution A ( Option D)

This is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

Mole = mass / molar mass

Mole of NaCl = 5 / 58.5

Mole of NaCl = 0.085 mole

Molarity = mole / Volume

Molarity of solution A = 0.085 / 0.05

Molarity of solution A = 1.7 M

Molarity = mole / Volume

Molarity of solution B = 0.085 / 0.075

Molarity of solution B = 1.13 M

Molarity = mole / Volume

Molarity of solution C = 0.085 / 0.1

Molarity of solution C = 0.85 M

Molarity = mole / Volume

Molarity of solution D = 0.085 / 0.125

Molarity of solution D = 0.68 M

SUMMARY

Thus, solution A has the highest concentration of the salt.

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Answer:

Extinction is the elimination of one species whereas mass extinction results in multiple animals to become extinct.

Answer:

This molecule is made up of 3 equally spaced sp2 hybrid orbitals arranged at approximately 120o angles. The shape of the orbitals is planar triangular. One orbital contains a lone pair of electrons.

Answer:

nacl cacl kcl mgcl k2so4 na2co3 na2so4 kno3 nahco3 naco3

Explanation:

Answer:

a. ionic, 211.62g/mol

b. molecular, 149g/mol

c. molecular, 342g/mol

Explanation:

Ionic Compound: These are compounds (2 or more elements) where atoms of the element have lost or gained electrons, thus they are ions, thus the name ionic. An easy way to identify ionic compounds is to see if there are any metals. Metals tend to give up their electron to a non-metal. It maybe helpful to familiarize which parts of the periodic table have metals and non-metals.

Molecular Compounds: These are compounds (2 or more elements) that are neutral. An easy way to identify them is that the compound is made up of just non-metals.

Molar Mass is the masses of each individual element in the compound. Refer to the periodic table for the masses and add them up carefully, remember to multiply their mass based on how many molecules there are in the compound, like for a, we can find the mass of NO3, but we need to multiply it by 2 since we have 2 molecules of NO3.

a. Sr(NO3)2

Sr= 87.62

NO3= 14 + (3 x 16)= 62

Sr + 2 (NO3)

87.62 + (2 x 62)= 211.6

b. (NH4)3PO4

NH4= 14 + 4 = 18

PO4= 30.97 + (4 x 16)= 94.9

(NH4 x 3) + PO4

(18 x 3) + 94.9 = 149

c. C12H22O11

(12 x C) + (22 x H) + (11 x O)

(12 x 12) + (22 x 1) + (11 x 16)

144 + 22 + 176= 342

Answer:

Amount of Alcohol volume present in solution = 44.99 ml

Explanation:

Given:

Total volume of solution = 409 ml

Amount of Alcohol percentage present in solution = 11%  

Find:

Amount of Alcohol volume present in solution

Computation:

Amount of Alcohol volume present in solution = Total volume of solution x Amount of Alcohol percentage present in solution

Amount of Alcohol volume present in solution = 409 x 11%

Amount of Alcohol volume present in solution = 409 x 0.11

Amount of Alcohol volume present in solution = 44.99 ml

Answer:

110.25grams

Explanation:

The balanced chemical equation is as follows:

H2SO4 + 2NaOH → Na2SO4 + 2H20

Based on the balanced chemical equation of the reaction given above, 1 mole of sulphuric acid (H2SO4) is required to react with 2 moles of sodium hydroxide (NaOH).

Hence, if 1 mol of H2SO4 is needed to react with 2 moles of NaOH

Then, 2.25mol of NaOH will be required to react with;

= 2.25/2

= 1.125mol of H2SO4

Using the formula, mole = mass/molar mass, we can convert the molar value of H2SO4 to its mass value.

Molar mass of H2SO4 = 1(2) + 32 + 16(4)

= 2 + 32 + 64

= 34 + 64

= 98g/mol

Therefore, mole = mass/molar mass

1.125 = mass/98

mass = 98 × 1.125

mass = 110.25grams of H2SO4

H⁣⁣⁣⁣ere's l⁣⁣⁣ink t⁣⁣⁣o t⁣⁣⁣he a⁣⁣⁣nswer:

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A neutral solution is one that is neither acidic nor basic. The hydrogen ion concentration equals the hydroxide ion concentration, and both equal 1 X 10-7 M. In a neutral solution, then, pH = pOH = 7.

.25 meters per second

25/100

.25

100/100

1

Answer:

Cs, Os, Sn, Br

Explanation:

Metallic character increases to the left and down the periodic table.

Answer: the amount of force on the spring scale

Explanation:

Answer:

B i tyink

Explanation:

brainlyest plssss

To obtain sand and water from mixture 1 , filtration process will be used.

To obtain salt from water in mixture 2 , crystallisation will be done.

Physical wastewater treatment processes include use of racks, screens,  clarifiers (sedimentation and flotation), and filtration. Chemical or biological reactions are important treatment processes, but not part of a physical treatment process.

It is given that the mixture contains

Mixture 1 contains sand and water

Mixture 2 contains salt and water

To obtain sand and water from mixture 1 , filtration process will be used.

To obtain salt from water in mixture 2 , crystallisation will be done.

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Answer:

d. 200.

Explanation:

The reaction is:

2KMnO4 + 16HCl ----> 2KCl + 2MnCl2 + 8H2O + 5Cl2

So 2 moles of KCL are produced form  16 moles of HCL

So 25 moles KCL are made from   25 * (16/2) HCl.

= 25 * 8

= 200 moles. HCl.

Answer:

Double bond, Double Covalent

Explanation:

Hope this helps!

Answer:

V₂ = 13.44 L

Explanation:

Given that,

Initial volume, V₁ = 5 L

Initial pressure, P₁ = 0.863 atm

Final pressure, P₂ = 0.321 atm

We need to find the final volume of the balloon. The relation between the volume and pressure is given by :

[tex]P_1V_1=P_2V_2[/tex]

Where

V₂ is the volume of the balloon

So,

[tex]V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{0.863 \times 5}{0.321 }\\\\V_2=13.44\ L[/tex]

So, the final volume of the balloon is equal to 13.44 L.

Answer:

Atom Labeling

Explanation:

Y- neutron

Z-protron

X - electron

W- nucleus

Explanation:

Everything is composed of atoms, which are the indivisible building blocks of matter and cannot be destroyed. All atoms of an element are identical. The atoms of different elements vary in size and mass. Compounds are produced through different whole-number combinations of atoms.

hope this helps you

have a nice day:)

Answer:

Carbon is a versatile element and is found in many different chemical compounds, including those found in space. Carbon is versatile because it can form single, double, and triple bonds. It can also form chains, branched chains, and rings when connected to other carbon atoms.

Explanation:

meaning of versatile: capable of or adapted for many different uses, skills, etc. 2 variable or changeable.

The versatile nature of carbon can be best understood with its features such as, tetravalency and catenation. In this section let us learn more about versatility of carbon.

Carbon is a versatile element and is found in many different chemical compounds, including those found in space. Carbon is versatile because it can form single, double, and triple bonds. It can also form chains, branched chains, and rings when connected to other carbon atoms.

The two characteristic features seen in carbon, that is, tetravalency and catenation, put together give rise to a large number of compounds. Many have the same non-carbon atom or group of atoms attached to different carbon chains.

Catenation: The property of forming long chains by self-linking with other carbon atoms to form long chains, rings, double or triple bonds is called catenation.

Isomerism: Compounds with same molecular formula but different structural formula are called isomers. An isomerism commonly seen is due to difference in the arrangement of atoms or groups of atoms & is called structural isomerism. The 4 types of structural isomerism are:

 Chain isomerism

 Position

 Functional

Metamerism

Tetravalency: Carbon has 4 electrons in its valence shell. Energy considerations do not allow it to gain or lose 4 electrons; therefore it forms covalent bonds with other elements to complete its octet. This accounts for its tetravalency and explains its ability to form a variety of compounds.

Answer:

Mg3N2

Explanation:

it has an inorganic compound for Magnesium and Nitrogen. if you put this two together it will the compound Magnesium nitride.

Explanation:

a. pressure always favors the side with fewer molecules. in this reaction as both the sides have equal number of molecules, there won't be any change in the position of the equilibrium.

b. when the concentration of the hydrogen gas is increased. more particles would take place in the reaction and so, the rate of reaction would increase favoring the reaction concerning hydrogen gas molecules (backward reaction in this case) therefore, equilibrium would shift to the backward reaction (left).

c. as forward reaction is endothermic, when temperature is increased the equilibrium will shift to the forward reaction (right).

d. catalyst would not have any effect on the position of the equilibrium. it will only increase the rate of reaction.

hope it helps. :)

Answer: a) pH = 2.56 , acidic

b) pH = 2.38, acidic

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

[tex]pH=-\log [H^+][/tex]

a) [tex][H^+]=2.7\times 10^{-3}[/tex]

Putting in the values:

[tex]pH=-\log[2.7\times 10^{-3}][/tex]

[tex]pH=2.56[/tex]

Thus as pH is less than 7, the solution is acidic.

b) [tex][H^+]=4.1\times 10^{-3}[/tex]

Putting in the values:

[tex]pH=-\log[4.1\times 10^{-3}][/tex]

[tex]pH=2.38[/tex]

Thus as pH is less than 7, the solution is acidic.