Chemistry, 01.09.2021 17:20, terabear2033
The table below gives the numbers of protons, electrons, and neutrons in four atoms.
Atom Number of protons Number of neutrons Number of electrons
1 9 8 9
2 9 9 8
3 9 9 10
4 9 10 9
Based on the table, which atom has a charge of –1?
1
2
3
4
Answers: 3
Chemistry, 22.06.2019 13:10, dookiefadep5n1tt
What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction
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Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon
Answers: 1
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In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 4.20 mol fe and 6.70 mol nio(oh) react?
Answers: 3
Chemistry, 23.06.2019 06:40, hackman1216
The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants. thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction. ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch, are burned? b) how much energy is released when 22.4g of ch. areburned?
Answers: 1
The table below gives the numbers of protons, electrons, and neutrons in four atoms.
Atom Number o...
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