The Answer Should Be Electrons.
Answer:
53.4 gMol-1
Explanation:
Let the mass of the unknown gas be M
Let the molar mass of hydrogen gas be 2×1=2gMol-1
Time for diffusion of unknown gas = 12.5 min
Time for diffusion of hydrogen= 2.42 min
From Graham's law:
t1/t2=√M1/M2
Hence:
2.42/12.5= √2/M
Hence M= 53.4 gMol-1
Answer:
D. It will not have a nucleoid.
Explanation:
Cells with a nucleus are eukaryotic cells. This means they will have membrane-bound organelles. The nucleus is an example of a membrane bound organelle that houses the DNA.
A. It will not have nuclear membrane. - this is false, the nucleus is surrounded by the nuclear membrane
B. It will not have a nucleolus - this is false, the nucleolus is a part of the nucleus, usually where ribosomal RNAs are made
C. It will not have ribosomes - this is false, proteins are made in ribosomes and they are present in all cells
D. It will not have a nucleoid - this is true. The nucleoid is a space in the cytoplasm of prokaryotic cells that houses the DNA. It is not membrane bound, and is distinct from the nucleus.
Answer:
D
Explanation:
Molecules at higher temperatures have more energy and can vibrate faster and allow sound waves to travel more quickly.
