PLEASE HELP

Question 1 (1 point)
Saved
Avogadro's number 6.02 X 10^23 is used in chemistry to measure something like electrons, atoms, elements etc.

Question 1 options:
True
False
Question 2 (1 point)
Saved
If you have 2 moles of marbles how many marbles do you have?

Question 2 options:

3.01 X 10^24

12.04 x 10^23

6.022 x 10^23

2.0 x 10^23

Question 3 (1 point)
Saved
Which value approximately represents the number of atoms in one mole of gold?

Question 3 options:

2.30×10^6

3.26×10^6

6.02×10^23

12.04×10^24

Question 4 (1 point)
Saved
How many hydrogen molecules are in 1.2 moles of hydrogen?

Question 4 options:

7.2 x 10^23

0.19 x 10^23

1.9 x 10^24

4.8 x 10^23

Question 5 (1 point)
How many water molecules are in 2.1 moles of water?

Question 5 options:

2.86 x 10^23

3.4 x 10^23

0.34 x 10^23

1.264 x 10^23

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Nhumans, abo blood types refer to glycoproteins in the membranes of red blood cells. there are three alleles for this autosomal gene: ia, ib, and i. the ia allele codes for the a glycoprotein, the ib allele codes for the b glycoprotein, and the i allele doesn't code for any membrane glycoprotein. ia and ib are codominant, and i is recessive to both ia and ib. people with type a blood have the genotypes iaia or iai, people with type b blood are ibib or ibi, people with type ab blood are iaib, and people with type o blood are ii. if a woman with type ab blood marries a man with type o blood, which of the following blood types could their children possibly have? in humans, abo blood types refer to glycoproteins in the membranes of red blood cells. there are three alleles for this autosomal gene: ia, ib, and i. the ia allele codes for the a glycoprotein, the ib allele codes for the b glycoprotein, and the i allele doesn't code for any membrane glycoprotein. ia and ib are codominant, and i is recessive to both ia and ib. people with type a blood have the genotypes iaia or iai, people with type b blood are ibib or ibi, people with type ab blood are iaib, and people with type o blood are ii. if a woman with type ab blood marries a man with type o blood, which of the following blood types could their children possibly have? a, b, ab, and o ab and o a, b, and o a and b

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?