What codes for the characteristics of an organism?

2 FONS

stiv31 [10]

Answer:

C. It decreases by a factor of 4

Explanation:

F1 = kq1*q2/r²

F2 = kq1*q2/(2r)² = kq1*q2/(4r²) = kq1*q2/(r²*4) = F1/4

7 0

3 years ago

In an ionic compound, the size of the ions affects the internuclear distance (the distance between the centers of adjacent ions)

Elena L [17]

Answer:

RbI<RbBr<RbCl<RbF

Explanation:

As stated in the question, the latice energy depends on the relative size of the ions. When the action size is constant as in the question, the lattice energy now depends on the relative of the anions. The order of increase in ionic sizes among the halide ions is fluoride<Chloride<Bromide<Iodide. This order of increasing size means that the lattice energy will decrease accordingly as shown in the answer.

3 0

3 years ago

Perform the following

vivado [14]

The correct number of significant figures and digits is 3

5 0

3 years ago

Somebody help me please i'm tired of trying to solve this problem ༎ຶ‿༎ຶ

Elenna [48]

Answer:

Q Line A

A: (a) 0 (b) 20

B: (b) 10 (c) 10

C: (c) 10 (d) 10

D: (d) 10 (e) 13

E: (e) 13 (f) 0

F: (f) 0 (g) 0

a: The velocity is whatever you need to see when you are specifically using a numberline so the answer for a is just 10

b: The velocity for this one is not as easy as the last one, its 7.

Explanation:

When you have a number line and your trying to find a numberline, you just have to subtract the smaller line to the largest number but if you are trying to find the velocity in beetween more than one thane you add the two biggest ones and subtract the smallest one and if you make a wrong move like add the biggest and smalles youll... still get the same answer so it doesnt matter really but its just easier to do the smallest one as the subtracting number just FYI. Happy spring break!

5 0

2 years ago

Number 8 pls step by stepA sample of gas has a mass of 20.00 g and occupies 44.8 L at STP. What is the molar mass of the gas?

LuckyWell [14K]

A sample of gas has a mass of 20.00 g and occupies 44.8 L at STP. What is the molar mass of the gas?

We know that 1 mol of an ideal gas at STP occupies 22.4 L. So we will use that relationship to find the number of moles of the gas that occupies 44.8 L.

number of moles = 44.8 L * 1 mol/(22.4 L) = 2.00 moles

number of moles = 2.00 moles

Another way of getting the same result is:

STP means that the pressure is 1 atm and the temperature is 273.15 K. And the volume of our sample is 44.8 L

P * V = n * R * T

n = P * V/(R * T)

n = 1 atm * 44.8 L / (0.082 atm*L/mol*K * 273.15 K)

n = 2.00 moles

So two moles of an ideal gas occupies 44.8 L at STP.

The mass of the sample is 20.00 g and we have 2 moles. So the molar mass is:

molar mass = (mass of sample)/(number of moles of the sample)

molar mass = 20.00 g/(2.00 moles)

molar mass = 10.0 g/mol

Another way of solving it:

Since the mass of two moles of our gas is 20.00 g, we can find the mass of 1 mol by solving this:

2.00 moles of gas ______ 20.00 g

1.00 mol of gas _____ x = ?

x = 1.00 mol * 20.00 g/2.00 moles = 10.0 g

So the mass of 1 mol is 10.0 g. Then the molar mass is 10.0 g/mol.

Answer: the molar mass of the gas is 10.0 g/mol

7 0

1 year ago