Sponges, Cnidarians, Flatworms, and Roundworms are all in which group of animals?

In which location would you expect to find the greatest species diversity?!

7nadin3 [17]

The correct answer is D : United States

All of the other countries on the list have great species diversity, especially Cosa Rica due to it's closeness to the equator and therefore its tropical climate perfectly suitable for wildlife thrive.
But, the United States' territory covers the areas with the mild climate, forests, deserts, canyons and species-rich coastal regions as well as the Hawaii islands with unique species diversity and the Alaskan area with the arctic habitat.

7 0

4 years ago

Place the following compounds in order of increasing vapor pressure. methane, CH4; pentane, CH3CH2CH2CH2CH3; 1-propanol, CH3CH2C

ella [17]

Explanation:

A compound that contains more stronger bonds will need more amount of heat in order to break the bonds so that it changes into vapor state.

In 1-propanol, there is hydrogen bonding and it is stronger in nature. As a result, more amount of heat is required to break the bonds between molecules of 1-propanol.

Whereas in propanone, there will be dipole-dipole interactions which are less stronger than hydrogen bonding. Hence, propanone molecule will need less amount of energy than 1-propanol.

On the other hand, pentane will need more amount of heat as it has longer chain of carbon atoms as compared to methane.

Thus, we can conclude that given compounds are arranged in order of increasing vapor pressure as follows.

methane < pentane < propanone < 1-propanol

5 0

3 years ago

Read 2 more answers

A gaseous compound containing carbon and hydrogen was analyzed and found to consist of 83.65% carbon by mass. The molar mass of

steposvetlana [31]

Answer:

The molecular formula is C6H14

Explanation:

Step 1: Data given

Suppose the mass of compound = 100 grams

A compound contains:

Carbon = 83.65 % = 83.65 grams

Hydrogen = 16.35 % = 16.35 grams

Atomic mass of carbon = 12.01 g/mol

Atomic mass of hydrogen = 1.01 g/mol

Molar mass of compound = 86.2 g/mol

Step 2: Calculate moles

Moles = mass / molar mass

Moles carbon = 83.65 grams / 12.01 g/mol

Moles carbon = 6.965 moles

Moles hydrogen = 16.35 grams / 1.01 g/mol

Moles hydrogen = 16.19 moles

Step 3: Calculate mol ratio

We divide by the smallest amount of moles

C: 6.965 moles / 6.965 moles = 1

H = 16.19 moles / 6.965 moles = 2.33

This means for 1 mol C we have 2.33 moles H OR for 3 moles C we have 7 moles H

The empirical formula is C3H7

The molecular mass of this formula is 43.1 g/mol

Step 4: Calculate molecular formula

We have to multiply the empirical formula by n

n = 86.2 g/mol / 43.1 g/mol

n = 2

Molecular formula = 2*(C3H7) = C6H14

The molecular formula is C6H14

7 0

4 years ago

3. What did the Civil Rights Act of 1964 require?

Ilya [14]

Answer:

The Civil Rights Act of 1964 prohibits discrimination on the basis of race, color, religion, sex or national origin. ... The Act prohibited discrimination in public accommodations and federally funded programs. It also strengthened the enforcement of voting rights and the desegregation of schools.

4 0

3 years ago

What is the nuclear charge of an alpha particle?

kvasek [131]

Alpha particles are released by high mass, proton rich unstable nuclei. The alpha particle is a helium nucleus; it consists of two protons and two neutrons. It contains no electrons to balance the two positively charged protons. Alpha particles are therefore positively charged particles moving at high speeds.

4 0

3 years ago