The data given are
melting point density
Zinc 419.53 oC 7.134
Nickel 1455oC 8.912
Copper 1084.62oC 8.96
Silver 961.78oC 10.501
Gold 1064.18oC 19.282

density is the mass per unit volume. Melting point is determined by the intermolecular forces between particles in the solids.
We have been asked to find which cube weighs the most
density = mass/volume
when volume is constant for all the metals, then density is directly proportional to mass. Therefore metal with highest density has the highest mass.
from the given metals, metal with highest density is Gold.
correct answer is Gold.

6 0

3 years ago

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A certain species of seed-eating bird lives on a remote island. Many young have recently been born with shorter beaks that can c

fredd [130]

Answer:

Explanation:

The beaks are in direct correlation with the type of or amount of food they are consuming.

4 0

3 years ago

G you extracted your dna from cheek cells. the concentration of your dna sample is 250 ng/μl. the dna template for pcr should be

Karo-lina-s [1.5K]

You should mix 4µl of DNA sample and complete it with 96µl (100-4) of water.

You can figure this out by using C1.V1 = C2.V2
C1 = 250 ng/μl (Sample Concentration)
V1 = ? (the necessary volume to take from the DNA sample)
C2 = 10 ng/μl (PCR concentration)
V2 = 100 µl (total volume)

V1 = $\frac{C2 . V2}{C1}$ = $\frac{10 . 100}{250}$ = 4µl

For the water: 100µl (total volume) = 4µl + Water
Water volume = 96µl

6 0

3 years ago