Spell out the full name of the compound?

Answer:

They are all vascular plants.

Explanation:

Vascular plants, also known as tracheophytes, are highly advanced plant creatures with leaves, stems, and roots, as well as a vascular system made up of conducting vessels. Ferns are herbaceous, pteridophytic vascular plants that do not produce flowers or seeds. Gymnosperms are vascular plants that produce seeds but do not produce blooms. Because the seeds aren't covered or protected by an ovary, they can be seen on the plant's leaves or other components. Angiosperms are flowering plants containing seeds that develop inside the ovary, which develops and produces fruit.

Answer:

They all produce seeds

Explanation:

Explanation:

high energy to Low energy

=the electron gains energy (K.E)

Answer:

D. Decreasing the temperature of the system

Explanation:

Answer:

The total ionic equation is:

3 Na+ + PO4-3 + 3H+ + 3Cl- --> H3PO4 + 3Na+ + 3 Cl-

And the net ionic equation is:

3H+ + PO4-3 --> H3PO4

Answer: 2.24 grams of Pb

Explanation:

Step 1

Balanced chemical reaction;

2PbS + 3O2 → 2Pb + 2SO3

Step 2

Moles of both PbS and O2

Moles = mass / molar mass

Moles of PbS = 2.54 g / 239.3 g/mol = 0.0108 moles

Moles of O2 = 1.88 / 32 g/mol = 0.0588 moles

Step 3

Finding the limiting reactant.

Limiting reactant, is that reactant which is completely used in the reaction;

If we assume that PbS is the limiting reactant;

We have 0.0588 moles of O2. This needs ( 0.0588 * 2) / 3 = 0.0392 moles of PbS to fully react. But we have only 0.0108 moles of PbS available. That means that the PbS will be completely consumed hence the limiting reactant

If we assume O2 is the limiting reactant;

We have 0.0108 moles of PbS. That needs ( 0.0108 * 3) / 2 = 0.0162 moles of O2. But we have 0.0588 moles of O2 which is in excess further confirming that PbS is the limiting reactant since it will be depleted in the reaction.

Step 4

Moles of lead

For this step we apply the mole ratios with the limiting reactant;

Mole ratio of PbS : Pb = 2 : 2 = 1 : 1

Therefore;

Moles of Pb = (0.0108 moles  * 1 ) 1

Moles of Pb =0.0108 moles

Step 5

Mass of Pb

Mass = moles * molar mass

Mass of Pb =0.0108 moles * 207.2 g/mol

Mass of Pb = 2.24 grams

A

Explanation:

electrons flow in both directions

Answer: A I know it but I forgot how to explain it.

Answer:

10026 joules

Explanation:

its right.

Explanation:

pOH=-log(2.6×10^(-6)

we get around 5.59

(using log)

Thermal energy flows from hot to colder bodies and is determined by the process of calorimetry.

Thermal energy is the energy transfer process which occurs as a result temperature difference between two bodies.

Thermal energy flows from hot to colder bodies.

The quantity of Heat transfer is determined using a calorimeter.

The calorimeter works on the principle of conservation of energy. The principle of the calorimeter is stated as follows:

The quantity of Heat, q = mass × specific heat capacity × temperature difference

Therefore, it can be concluded that thermal energy flows from hot to colder bodies.

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Answer:

I did this earlier, here's what I put.

The IUPAC name of the compound shown in the image is 4-bromo butyne.

IUPAC is a body in chemistry that stands for International Union of Pure and Applied Chemistry.

IUPAC functions in the naming of organic compounds in chemistry.

According to the image in this question, the functional group of the compound is a triple carbon bond meaning that it is an alkyne.

Bromine is attached to the fourth carbon, hence, the IUPAC name of the compound is 4-bromo butyne.

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Answer:

Can you repost this but flip it? It’s upside down rn

Explanation:

Answer:

bottom right top left fig

The kind of wave that is formed when a transverse wave and a longitudinal wave combine is surface wave.

A surface wave is a mechanical type of wave that propagates along the boundary between two different media.

When a mechanical wave travels at the interface between two media, a transverse wave and a longitudinal wave can combine to form a surface wave.

An example can be seen in ocean waves.

Thus, the kind of wave that is formed when a transverse wave and a longitudinal wave combine is surface wave.

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Answer:

A Violet object

Explanation:

An Violet object attracts the heat after white objects, followed by orange, yellow, green, blue, indigo and violet, which attracts the most heat of any visible color other than black.

The mass, in grams, of 5.2 x 10^28 atoms of manganese would be 0.0006833 grams

According to Avogadro, 1 mole of any substance contains 6.022 x [tex]10^{23}[/tex] atoms.

Thus, how many moles would be in 5.2 x [tex]10^{28}[/tex]atoms of Mn:

         = 6.022 x [tex]10^{23}[/tex] /1 x 5.2 x [tex]10^{28}[/tex]

                       = 0.00001158 moles

Mass of 0.00001158 moles Mn = 0.00001158 x 54.9

                         = 0.0006833 grams

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By subtracting the energy at the highest point of the diagram from the energy of the reactants we obtain the activation energy.

A potential energy diagram is a diagram that shows the energy of the reactants as well as that of the products. Even though the diagram is not shown here but we know that the actvation energy is shown by the energy difference between the highest point on the reaction profile and the energy of the reactants.

Hence, by subtracting the energy at the highest point of the diagram from the energy of the reactants we obtain the activation energy.

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Answer:

The answer would be 100 kJ

Explanation:

I took the quiz

Given:

Initial pressure P1 = 3 atm

Initial volume = 3L

Temperature (constant)= 298 K

final volume V2 = 2L

To find:

Final pressure P2 = ?

Solution:

According to Boyle's Law,

P1V1 = P2V2

3×3 = 2 × P2

P2 = 9/2

P2 = 4.5 atm

[tex]{Answer = 4.5 atm}[/tex]

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Answer: its supposed to be  18.78%.

Explanation:

non-polar molecule because the chemical formula is in a tetrahedral form(O4) and the (Si) is in the centre. I hope this will help you

A. The mass of O₂ needed to burn 36.1 g of B₂H₆ is 123.77 g

B. The number of mole of water, H₂O produced from 19.2 g of B₂H₆ is 1.372 mole

B₂H₆ + 3O₂ —> 2HBO₂ + 2H₂O

Molar mass of B₂H₆ = (2×11) + (1×6) = 28 g/mol

Mass of B₂H₆ from the balanced equation = 1 × 28 = 28 g

Molar mass of O₂ = 2 × 16 = 32 g/mol

Mass of O₂ from the balanced equation = 3 × 32 = 96 g

SUMMARY

From the balanced equation above,

28 g of B₂H₆ required 96 g of O₂

From the balanced equation above,

28 g of B₂H₆ required 96 g of O₂

Therefore

36.1 g of B₂H₆ will require = (36.1 × 96) / 28 = 123.77 g of O₂

Thus, 123.77 g of O₂ is required for the reaction

We'll begin by calculating the number of mole of in 19.2 g of B₂H₆. This can be obtained as follow:

Mole = mass / molar mass

Mole of B₂H₆ = 19.2 / 28

Mole of B₂H₆ = 0.686 mole

Finally, we shall determine the number of mole of water produced. This is illustrated below:

B₂H₆ + 3O₂ —> 2HBO₂ + 2H₂O

From the balanced equation above

1 mole of B₂H₆ reacted to produce 2 moles of H₂O

Therefore, H₂O

0.686 mole of B₂H₆ will react to produce = 0.686 × 2 = 1.372 mole of H₂O

Thus, 1.372 mole of H₂O was obtained from the reaction

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Answer:

Answer:Fish play an important role in nutrient cycles because they store a large proportion of ecosystem nutrients in their tissues, transport nutrients farther than other aquatic animals and excrete nutrients in dissolved forms that are readily available to primary producers.

Answer:

digital signal

Answer:

Its made of numbers

Explanation:

did the assignment, hope this helps :]

The cell notation is; Cu^2+(aq)/Cu(s)//Mg(s)/Mg^2+(aq). The standard cell notation helps us to write the cell equation easily.

The electrochemical cell involves the transformation of chemical energy to electrical energy in an electrochemical cell. The two electrodes involved are the cathode and the anode.

In this case, the Mg is the anode and the Cu is the cathode hence the cell notation is; Cu^2+(aq)/Cu(s)//Mg(s)/Mg^2+(aq).

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Answer:

O place them in a flame dissolve them in water o add more particles to the solution.

Answer:

Newton's second law of motion is F = ma, or force is equal to mass times acceleration.

Explanation:

Answer:

F= m x a

force = mass x acceleration

Explanation:

The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased.