Ascientist has a tomato plant with red-skinned tomatoes. it has one allele for red skin (r) and one for yellow skin (r). which describes the phenotype of the tomato plant?

Red skin is the answer i believe. I can confirm after the test. Don't really know what the other person who answered was thinking

Just finished the test and yes, the answer is Red skin

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3