Energy is just like water, cycles through ecosystems. <br><br> True or false?

PLEASE ANSWER!!!!!!!! WILL MARK BRAILIEST

Mariana [72]

9.Pubchem
10.Oxygen
11. Selenium fluoride
12. Disilicon Hexabromide
13. sulfur tetrachloride
14.Methane
15.diboron silicide
16. Nitrogen trifluoride

PLEASE GIVE ME BRAINLIEST!

6 0

3 years ago

B) Ethane has the formula C2H6. In terms of electronic structure,

k0ka [10]

Answer:

There is one single covalent bond between two carbon atoms.

Explanation:

We know that sharing of electrons form covalent bonds.

If we look upon K,L,M ,N shells of the carbon and hydrogen atoms.

We found that Hydrogen is having only $1$ electron in K shell.

And Carbon on the other hand is having $2$ electrons in K shell and $4$ electrons in L shell.

So carbon have $4$ valence electrons,and it can share $4$ bonds with any relevant atom to complete its octet.

And Hydrogen requires $1$ electron to complete its doublet.

Alkane general formula $C_{n}H_{2n+2}$

For ethane $n=2$

$C_{2}H_{4+2}$ $=$ $C_{2}H_{6}$

$1$ Carbon atom is shared by $3$ Hydrogen.

The remaining one electron $(4-3)=1$ of carbon will be shared with another carbon atom.

An image of the sharing of electrons attached below,

Hence we have only $1$ covalent bond between the two.

5 0

4 years ago

) In order to plate a steel part having a surface area of 200 in.2 with a 0.002 in.-thick layer of nickel: (a) how many atoms of

Fiesta28 [93]

Answer:

(a). 5.4 × 10^23 atoms.

(b). 0.8928 moles Ni.

Explanation:

The first thing to do is to convert surface area from the in^2 to cm^2 and also the thickness unit to cm.

Therefore, 200 in^2 = 1290.3 cm^2 and 0.002 in = 0.00508 cm.

The next thing to do is to calculate the volume by using the formula below;

Volume= A × d. Where A = area and d = thickness.

Then, volume = 1290.3 × 0.00508= 6.55 cm^3.

Although not given but the Density if Nickel = 8 g/cm^3.

We know that the formula for Calculating density = mass / volume. So, we have ; mass = density × volume.

Mass= 8 × 6.55 = 52.4 g.

(a). The number of atoms of Nickel= moles × Avogrado's number.

Numbers of moles= mass / molar mass.

==> 52.4 / 58.6934 = 0.8928 moles.

Then, the number of atoms of Nickel = 0.8928 × 6.02 × 10^23.

= 5.4 × 10^23 atoms.

(b). The number of moles of Nickel has been Calculated in (a) above to be = 0.8928 moles Ni.

5 0

4 years ago

Read 2 more answers

What volume, in mL, of carbon dioxide gas is produced at STP by the decomposition of 0.242 g calcium carbonate (the products are

damaskus [11]

Answer:

54.21 mL.

Explanation:

We'll begin by calculating the number of mole in 0.242 g calcium carbonate, CaCO3.

This is illustrated below:

Mass of CaCO3 = 0.242 g

Molar mass of CaCO3 = 40 + 12 +(16x3) = 40+ 12 + 48 = 100 g/mol

Mole of CaCO3 =?

Mole = mass /Molar mass

Mole of CaCO3 = 0.242/100

Mole of CaCO3 = 2.42×10¯³ mole.

Next, we shall write the balanced equation for the reaction. This is given below:

CaCO3 —> CaO + CO2

From the balanced equation above,

1 mole of CaCO3 decomposed to produce 1 mole CaO and 1 mole of CO2.

Next, we shall determine the number of mole of CO2 produced from the reaction.

This can be obtained as follow:

From the balanced equation above,

1 mole of CaCO3 decomposed to produce 1 mole of CO2.

Therefore,

2.42×10¯³ mole of CaCO3 will also decompose to produce 2.42×10¯³ mole of CO2.

Therefore, 2.42×10¯³ mole of CO2 were obtained from the reaction.

Finally, we shall determine volume occupied by 2.42×10¯³ mole of CO2.

This can be obtained as follow:

1 mole of CO2 occupies 22400 mL at STP.

Therefore, 2.42×10¯³ mole of CO2 will occupy = 2.42×10¯³ x 22400 = 54.21 mL

Therefore, 54.21 mL of CO2 were obtained from the reaction.

7 0

3 years ago

Which statement describes how the Van Allen belts are formed? O when low-energy particles from the Sun bounce off Earth’s magnet

aniked [119]

Answer:

when high-energy particles from the sun are trapped by earth's magnetic field

Explanation:

it is produced by a "depression" in the Earth's magnetic field in that area, caused by the fact that the center of the Earth's magnetic field is deviated from its geographic center by 450 km. Such an anomaly is thought by some to be a side effect of a Geomagnetic Reversal. These radiation belts originate from the Earth's intense magnetic field that is the product of their rotation. That field traps charged particles (plasma) from the Sun (solar wind), as well as charged particles that are generated by interaction of the Earth's atmosphere with cosmic radiation and high-energy solar radiation.

8 0

3 years ago

Read 2 more answers

Energy is just like water, cycles through ecosystems. True or false?