Hey! In order to answer this question, we need to understand the difference between mass and density. Mass is the property of matter that measures its resistance to its acceleration, while density is the measure of mass per volume.
Mass is independent as it just focuses on how heavy an object is while density isn't. It can be represented by this equation.
Density = Mass/Volume
If the iron block has more mass per volume than the gold. Then you can consider that the iron has a higher density than gold. However, only if both have the same amount of volume. If there is less or more, then it can fluctuate.
Answer:
To convert C to K, just add 273, remember that 0° C is 273 K, so 73.a) is 317.2 K and 73.c) is 253 K. 74.a) Will be, -129, 4 C + 273 = 143.5 F, 74.c) 663.8 F
75.a) 7.2 C , 75.c) -23.3 C
Explanation:
To convert C to F, you can use this, (9/5 * C + 32 ) = F, or back ward, C = (F - 32)* 5/9.
Answer: The correct answer is -C) Prevent the embryo from drying out.
The amniotic egg of birds and reptiles is surrounded by an outer, tough, and protective shell, which protects the egg from any damage, predators, pathogens, and drying out.
The tough shell and extra embryonic membranes create a safe environment where an embryo can develop into a whole organism (with different organs like eyes ,ears, brain, kidney, heart).
Thus, option C) is the right answer.
Answer:
A. manganese change from +7 to +2
Explanation:
Reduction means a gain of electrons, which means the oxidation number will go down or the charge goes down basically or become more negative charge. On the left, Mn has +7 in MnO4-. On the right, it has 2+, so it has been reduced.
Sound is the movement. Hope this helped. Have a great day! :D