Chemistry

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A major inconvenience of coal as a fuel is that it is a(n) A) solid. B) liquid. C) gas. D) ... Started by Mimi	1 Replies 148 Views	Aug 27, 2018 by Cnarkel
The end of the protein molecule with a free amino group is called the ________ end. Fill in the ... Started by vinney12	3 Replies 55 Views	Aug 27, 2018 by shewald78
The diameter of an atom is 100,000 times as great as the diameter of its nucleus. If an atom could ... Started by RYAN BANYAN	1 Replies 118 Views	Aug 27, 2018 by jonathanballen97
When coal is burned, mineral impurities are converted to A) sulfur dioxide gas that goes up the ... Started by Mimi	1 Replies 60 Views	Aug 27, 2018 by ebe
The genetic information in DNA is carried by ________ different bases. Fill in the blank(s) with ... Started by ahriuashd	1 Replies 90 Views	Aug 27, 2018 by nhea
When coal containing sulfur is burned, the sulfur is converted to A) gaseous sulfur oxides that ... Started by B	3 Replies 233 Views	Aug 27, 2018 by Pariscourtney
When coal burns, A) chemical energy is converted to heat energy. B) heat energy is created. C) ... Started by mp14	1 Replies 180 Views	Aug 27, 2018 by xiaomengxian
Cosmic rays are A) high energy radiation produced by the sun. B) high energy radiation produced ... Started by audie	1 Replies 179 Views	Aug 27, 2018 by carolinefletcherr
Emollients are A) artificial skin. B) skin plasticizers. C) skin coatings. D) skin ... Started by cdr_15	1 Replies 152 Views	Aug 27, 2018 by upturnedfurball
Skin moisturizers A) add moisture to skin. B) prevent loss of moisture from skin. C) cause skin ... Started by K@	3 Replies 167 Views	Aug 27, 2018 by pami445
Radiation with enough energy to knock electrons off atoms or molecules is known as A) electron ... Started by Pineapplelove6	1 Replies 95 Views	Aug 27, 2018 by ecabral0
Sunscreens contain chemicals that A) absorb both UV-A and UV-B rays. B) absorb neither UV-A nor ... Started by Collmarie	1 Replies 96 Views	Aug 27, 2018 by nixon_s
Blood sugar is A) fructose. B) glucose. C) lactose. D) ... Started by joblessjake	1 Replies 46 Views	Aug 27, 2018 by kingfahad97
Coal can be cleaned before it is burned. The flotation method separates coal from its major ... Started by cdr_15	3 Replies 131 Views	Aug 27, 2018 by essyface1
Exposure of skin to UV radiation does NOT cause A) melanin production. B) increased risk of skin ... Started by washai	1 Replies 90 Views	Aug 27, 2018 by Sophiapenny
When thorium-234 undergoes beta decay, what other product is formed? A) thorium-233 B) ... Started by berenicecastro	1 Replies 87 Views	Aug 27, 2018 by ricroger
When radium-223 undergoes alpha decay, what other product is formed? A) radium-219 B) radium-224 ... Started by anjilletteb	1 Replies 179 Views	Aug 27, 2018 by Chou
Skin cream and lipsticks have approximately the same basic composition. What is added to lipsticks ... Started by elizabeth18	3 Replies 57 Views	Aug 27, 2018 by bob
A major problem with eye makeups is A) bacterial contamination after extended use. B) color ... Started by NClaborn	1 Replies 73 Views	Aug 27, 2018 by hanadaa
The structural material of plants is largely A) amylopectin. B) coal. C) amylose. D) ... Started by MirandaLo	1 Replies 70 Views	Aug 27, 2018 by EAN94
Which of the following particles has a mass of 1 amu and a charge of 0? A) neutron B) proton C) ... Started by CORALGRILL2014	1 Replies 85 Views	Aug 27, 2018 by aidanmbrowne
Deodorants act by A) breaking down odorous chemicals as they are produced. B) destroying ... Started by bcretired	3 Replies 117 Views	Aug 27, 2018 by Jayson
The nucleon number decreases by 4 during what type of radioactive decay? A) beta decay B) alpha ... Started by colton	1 Replies 254 Views	Aug 27, 2018 by kkenney
In the presence of oxygen, glucose is broken down to A) carbon dioxide, water, and energy. B) ... Started by awywial	1 Replies 154 Views	Aug 27, 2018 by DHRUVSHAH
An advantage of natural gas as a fuel is that it is A) more abundant than coal. B) easy to ... Started by Coya19@aol.com	1 Replies 75 Views	Aug 27, 2018 by zacnyjessica