Chemistry, 03.09.2019 23:30, TheViperMlg23676
Randy is building a house. he wants to put stucco on the outside walls of his house. to make stucco, he needs sand. he lives on the beach, so he decides to use the soil in his backyard. before he can use the sand, he must remove the other substances from the soil. he separates the larger pebbles and other debris from the finer sand by sifting it with wire mesh. randy mixes the sand with concrete and water to make the stucco he needs.
which sentence provides the best evidence that randy's backyard soil is a heterogeneous mixture?
1.to make stucco, he needs sand.
2. randy mixes the sand with concrete and water to make the stucco he needs.
3.he separates the larger pebbles and other debris from the finer sand by sifting it with wire mesh.
4. before he can use the soil, he must remove the substances other than sand in the soil.
Answers: 1
Chemistry, 22.06.2019 11:00, hannah5143
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.
Answers: 2
Chemistry, 22.06.2019 13:00, aleilyg2005
If two objects at different te, peraure are in contact with each other what happens to their temperature
Answers: 1
Chemistry, 22.06.2019 13:30, kassandrarosario1115
How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123
Answers: 1
Randy is building a house. he wants to put stucco on the outside walls of his house. to make stucco,...
Mathematics, 10.03.2020 06:45