why do you think they stilk proruxe bright flowers to attract bees?

Answer:

B

Explanation:

just answered

An artificial reef is intended to affect the ocean ecosystem by providing shelter and habitat for marine organisms causing sediment to erode into deeper waters. Hence, option C is correct.

An artificial reef is a human-made underwater structure, typically constructed with the purpose of enhancing marine biodiversity, providing habitat for marine organisms, and promoting recreational activities like fishing, diving, and snorkeling.

Artificial reefs can be created from a variety of materials, such as concrete, metal, tires, and sunken ships. The reef structure can also increase the overall biodiversity of an area by creating a new habitat for species that may not have been present before.

Additionally, the presence of an artificial reef can help to reduce pressure on natural reefs by providing an alternative location for fishing and other activities. However, artificial reefs are not typically used as a means of removing pollution from the water or preventing erosion.

Therefore, option C is correct.

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Is the equation wrong. Such a equation cannot be formed. pls enter the write equation i will help you

Answer:

0.33%

Explanation:

From the question given above, the following data were obtained:

Experimental value = 9.842 m/s²

Accepted value = 9.81 m/s²

Percentage error =?

The percentage error in the calculation can be obtained as follow:

Percentage error = |Experimental – Accepted| / Accepted value × 100

Percentage error = |9.842 – 9.81| / 9.81 × 100

Percentage error = 0.032 / 9.81 × 100

Percentage error = 0.33%

Therefore, the error in the calculation is 0.33%

Answer: C

Explanation:

Hot air is a lot less dense for a few reasons. Hot air essentially means the particles have more kinetic energy, and move around a lot more. Cold air is dense because the particles move a lot less, have less energy, and are closer together.

Answer:

A

Explanation:

Since the balloon itself is heavier than air, it must be filled with a large volume of something much lighter—either hot air or a very light gas, such as helium. Because the combined weight of the balloon and the gas is less than the weight of an equal volume of surrounding air, the balloon rises.

Answer:

CaCl2

Explanation:

The ionic solid CaCl₂ would have the largest lattice energy. Therefore, option (c) is correct.

Lattice energy is the heat of formation when one mole of crystalline ionic solid is generated from its constituent ions in their gaseous state.

For example, the lattice energy of sodium chloride crystal is the energy change of reaction when Na⁺ and Cl⁻ ions react to produce a NaCl crystal, which is equal to -786 kJ/mol.

The relation between lattice energy and lattice enthalpy at constant pressure is given by:

ΔU (lattice) = ΔH (lattice) - PΔV

Lattice energy is directly proportional to the charge on ions and inversely proportional to the interionic distance between ions.

For NaCl and NaF the charge on the ions is +1 and -1 while the size of the ions is small. So they have less lattice energy.

CsI ionic solid have a larger size of ions Cs⁺ and I⁻. So CsI will have less lattice energy. CsBr₂ has +2 charge on calcium but the size of both ios is larger. So, CsBr₂ will have less lattice energy.

CaCl₂ has + 2 charge on calcium as well as the ionic radius is also samll. Therefore, CaCl₂ would have the largest lattice energy.

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6

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Stoichiometry

Step 1: Define

[RxN - Balanced] 2AgNO₃ (aq) + Cu (s) → Cu(NO₃)₂ (aq) + 2Ag (s)

Step 2: Identify

Reactants: 2AgNO₃ (aq) + Cu (s)

# of O atoms: 2(O₃) = 6 O

Answer:

recordando también que ** 1mL = 1cm ^ 3 **

(como ** 1 dm ^ 3 = 1 L **)

Answer:

B

Explanation: im not rlly sure you can go with what i said or you dont

Answer:

2 Na2O means two molecules of Sodium oxide.

mark me please

Answer: Salt water is a solution because it has these two characteristics: it has the same concentration of each of its parts throughout the solution, and it can be separated by some physical process.

Explanation: Literally learning about this in my science class XD

Answer:

the tea was not hot sugar dissolves quickly and hot water than cold

Answer:

Natural gas

Explanation:

Natural gas is pretty clean when it burns compared to other gases.

Answer:

bases taste bitter, feel slippery, and conduct electricity when dissolved in water

Explanation:

Answer:

like peas

Explanation:

Answer:

See explanation

Explanation:

We know that

%ic of the interatomic bond = [1 - e^-(XA - XB)^2/4] * 100%

Now;

XA = electronegativity of Ti = 1.61

XB = electronegativity of Al = 1.54

Substituting values;

%ic of the interatomic bond = [1 - e^-(1.61 - 1.54)^2/4] * 100%

%ic of the interatomic bond = 0.12%

Given the low %ic of the interatomic bond, the bond is metallic.

The percent ionic character is 0% and the type of interatomic bonding would be metallic.

The percent ionic character can be determined by using the formula,

[tex]1-exp{-0.25(Xa-Xb)^{2} ][/tex]

• In the given equation, Xa and Xb refers to the electronegativities of the elements.  

• The intermetallic compound given is TiAl₃.  

• Based on the electronegativity table, the electronegativity of Al or Xa is 1.5 and the electronegativity of Ti or Xb is 1.5.  

Now putting the values in the above formula we get the % ionic character,

[tex]= 1-exp [-0.25 (Xa -Xb)^{2}]*100%\\\\\\=1-exp [-0.25 (1.5 -1.5)^{2}]*100%\\[/tex]

[tex]= 0 percent[/tex]

Thus, the ionic bond character is 0% and the compound TiAl₃ comprises two metals, it exhibits metallic bonding.

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Answer:

11.) Radio

12.) Microwave

13.) Infrared

14.) Ultraviolet

15.) X-Ray

16.) Gamma Ray

Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.

These are reactions that transfer energy to the surroundings (ie the energy exits from the reaction, hence the name exothermic). The energy is usually transferred as heat energy, causing the reaction mixture and its surroundings to become hotter. A thermometer is used to detect the temperature increase.

Examples:

Combustion

Neutralisation between acids and alkali

These are reactions that take in energy from the surroundings (ie energy enters the reaction, which will help you to remember the name endothermic). The energy is usually transferred as heat energy, causing the reaction mixture and its surroundings to become colder. A thermometer is used to detect the temperature decrease.

Example:

Electrolysis

Answer:Calcium hydroxide is a polar compound. 2. Carbonates are insoluble in water unless it is combined with NH4+ or any group 1A ion. It is a colorless crystal or white powder and is produced when quicklime (calcium oxide) is mixed, or slaked with water.Ca(OH)2 is an ionic compound, in which Ca is the cation and OH is the anion. Ca (calcium) has a charge of 2+, since it is in group 2 on the periodic table.

Explanation: hope this helps and have a great night

Answer:

MgCI2+ ___ AgNO3-->___Mg(NO3)2

i think u put 2 before NO3

Explanation:

Answer:

d

When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel.

Answer:

Honestly makes no sense sorry :(

Explanation:

I can try though.. There are three types of selectivity possible for any synthesis: (i) Chemoselectivity is deciding which group reacts. (ii) Regioselectivity is where the reaction takes place in that group. (iii) Stereoselectivity is how the group reacts with respect to the stereochemistry of the product.

A stereospecific mechanism specifies the stereochemical outcome of a given reactant, whereas a stereoselective reaction selects products from those made available by the same, non-specific mechanism acting on a given reactant. Of stereoisomeric reactants, each behaves in its own specific way.

I tried to explain it the best I could.

Hopefully this helps you :)

Feel free to correct me If it was wrong

Answer:

Lithosphere, Hydrosphere, atmosphere

The set of Earth components that is arranged in order from solid to liquid to gas is D. lithosphere, hydrosphere, atmosphere

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A 57 grams sample of iron reacts with 24 grams of oxygen to form 81 grams of iron oxide.

Iron oxide is a chemical compound that is made by the addition of iron and oxygen can also be known as ferrous oxide if react with two oxygen molecules then ferric oxide.

In the sample, the iron is 57 grams and the oxygen is 24 grams,

                 Fe + O -------------> FeO

                Iron   oxygen            iron oxide

By adding the mass of iron and oxygen,

             57 + 24 = 81 grams of  iron oxide.

Therefore, the mass of iron oxide is 81 grams if 57 grams sample of iron reacts with 24 grams of oxygen.

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Answer:

Explanation:

you sack