Chemistry, 24.11.2021 14:10 christopherschool04
A positive ion, called a is produced when one or more electrons are lost from a neutral atom.
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Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas
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Chemistry, 23.06.2019 04:31
What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3
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Chemistry, 23.06.2019 07:10
Which one of the following is an oxidation-reduction reaction? naoh + hno3 --> h2o + kno3 naoh + hno3 --> h2o + kno3 so3 + h2o --> h2so4 cacl2 + na2co3 --> caco3 + 2 nacl ch4 + 2 o2 --> co2 + 2 h2o al2(so4)3 + 6 koh --> 2 al(oh)3 + 3 k2so4
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Chemistry, 23.06.2019 07:10
1) a light bulb takes in 30 of energy per second. it transfers 3j as use energy. calculate the efficiency. second. it transfers 3j as useful light energy and 27j as heat energy. calculate the efficiency
Answers: 1
A positive ion, called a is produced when one or more electrons are lost from a neutral atom....
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