subject
Chemistry, 20.10.2020 05:01 shakira11harvey6

Question 1 of 10 Which of these is an example of a composite material?
A. Aluminum for the outer layer of an airplane
B. Plywood used in houses, which contains wood pieces glued
together in different directions
C. Wood planks used as beams to support roofs
D. Steel cables designed to be lightweight and strong

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 21.06.2019 22:20
Calcium hydride (cah2) reacts with water to form hydrogen gas: cah2(s) + 2h2o(l) → ca(oh)2(aq) + 2h2(g) how many grams of cah2 are needed to generate 45.0 l of h2 gas at a pressure of 0.995 atm and a temperature of 32 °c?
Answers: 2
question
Chemistry, 22.06.2019 01:20
1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.
Answers: 2
question
Chemistry, 22.06.2019 05:00
If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax
Answers: 1
question
Chemistry, 22.06.2019 07:30
All cells are made of four types of acids, lipids, proteins, and carbohydrates.
Answers: 1
You know the right answer?
Question 1 of 10 Which of these is an example of a composite material?
A. Aluminum for the ou...
Questions
question
Biology, 08.07.2019 00:00
question
Computers and Technology, 08.07.2019 00:00
question
Geography, 08.07.2019 00:00
question
Social Studies, 08.07.2019 00:00