peterdaciusoyrfnz
peterdaciusoyrfnz
01-11-2017
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yoruba people religious
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tamaiyah
tamaiyah
01-11-2017
can you explain it more so i can answer the questions ?
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Which subatomic particle has a negative charge? (1) proton (3) neutron (2) electron (4) positron
Which change is exothermic? (1) freezing of water(2) melting of iron(3) vaporization of ethanol(4) sublimation of iodine
An iron bar at 325 K is placed in a sample of water. The iron bar gains energy from the water if the temperature of the water is (1) 65 K (3) 65°C (2) 45 K (4)
Which two substances are covalent compounds? (1) C6H12O6(s) and KI(s) (2) C6H12O(s) and HCl(g) (3) KI(s) and NaCl(s) (4) NaCl(s) and HCl(g)
−4x + y = 6 −5x − y = 21
Which sentence uses a verb that agrees with its subject? A. These peacocks has such lovely feathers B. That baby have the cutest smile in those photographs.
Two substances have different physical and chemical properties. Both substances have molecules that contain two carbon atoms, one oxygen atom, and six hydrogen
Given the balanced equation representing a reaction: CaO(s) + CO2(g) ==>CaCO3(s) + heat What is the total mass of CaO(s) that reacts completely with 88 grams
Kelsey painted 1/4 of her bedroom in 3/7 of an hour at this rate how long would it take her to paint the entire room
A compound has a molar mass of 90. grams per mole and the empirical formula CH2O. What is the molecular formula of this compound? (1) CH2O (3) C3H6O3 (2) C2H4O2
