All categories

3 years ago

Plssssssssssssssss help me

Chemistry

2 answers:

AnnZ [28]3 years ago

8 0

True- the finches would eat different sizes nuts and seeds as they would occupy different niches over times which lead to differences in beak sizes within the island

shepuryov [24]3 years ago

8 0

Answer:

Answer is True

I hope its help for you

have a great day

You might be interested in

A high temperature state of matter in which atoms lose their electrons

Sidana [21]

The phase of matter where atoms lose their electrons is plasma. It requires quite a bit of heat, too.

4 0

3 years ago

How many moles of tin,Sn, are in 2500 atoms of tin?

Assoli18 [71]

Answer:

4.15×10⁻²¹ moles of Sn

Explanation:

This question can be solved by a simple rule of three.

We know that 1 mol contains 6.02×10²³ particles.

In this case, our particles are the atoms, so:

6.02×10²³ atoms / 1 mol . 2500 atoms = 4.15×10⁻²¹ moles.

The knowledge of mol can be applied for everything:

A mol of molecules

A mol of atoms

A mol of a compound

6 0

4 years ago

What does the zebra mussel do to affect the ecosystem

dangina [55]

Answer:

The explanation of the type of situation would be characterized below.

Explanation:

Zebra mussels, therefore, have a direct as well as indirect (significant) impact on natural ecosystems. The much more significant impact is on the feed intake interaction including its mussel.
Zebra mussels seem to be opportunistic feeders that analyze approximately one gallon of liquid or more per mussel.

6 0

3 years ago

a 3.50L sample of neon gas has a pressure of .950atm at 20c what would the volume be if the pressure increased to 1.50atm and th

ehidna [41]

Answer:

$V_2=2.22L$

Explanation:

Hello,

In this case, we use the Boyle's law which allows us to understand the volume-pressure behavior as an inversely proportional relationship:

$P_1V_1=P_2V_2$

Thus, solving for the final volume, once the pressure changes, we obtain:

$V_2=\frac{P_1V_1}{P_2}=\frac{3.50L*0.950atm}{1.50atm} \\\\V_2=2.22L$

Best regards.

8 0

4 years ago

What is the molality of an aqueous KCl solution with a mole fraction of KCl, XKCl = 0.175? (The molar mass of KCl = 74.55 g/mol

NARA [144]

Answer:

The molality of the KCl solution is 11.8 molal

Explanation:

Step 1: Data given

Mol fracrion KCl = 0.175

Molar mass KCl = 74.55 g/mol

Molar mass H2O = 18.02 g/mol

Step 2: Calculate mol fraction H2O

mol fraction H2O = 1 - 0.175 = 0.825

Step 3: Calulate mass of H2O

Suppose the total moles = 1.0 mol

Mass H2O = moles H2O * molar mass

Mass H2O = 0.825 * 18.02 g/mol

Mass H2O = 14.87 grams = 0.01487 kg

Step 4: Calculate molality

Molality KCl = 0.175 / 0.01487 kg

Molality KCl = 11.8 molal

The molality of the KCl solution is 11.8 molal

5 0

3 years ago