Which of the following is a neutralization reaction?
a
Ca(OH)2 + 2 HCl β CaCl2 + 2 H2O
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Chemistry, 05.04.2021 19:10, heggestade
Which of the following is a neutralization reaction?
a
Ca(OH)2 + 2 HCl β CaCl2 + 2 H2O
b
CaCl2 + 2 Na3PO4 β Ca3(PO4)2 + 6 NaCl
c
4 FeS + 7 O2 β 2 Fe2O3 + 4 SO2
d
SnO2 + 2 H2 β Sn + 2 H2O
Answers: 2
Chemistry, 21.06.2019 17:00, debordc17
Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects
Answers: 2
Chemistry, 22.06.2019 11:00, RidhaH
Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural. question 2 reflects a moral or social value. question 3 refers to something that can be measured. question 4 reflects a question that canβt be observed.
Answers: 1
Chemistry, 23.06.2019 07:20, prettydoll19
Which statement explains which component is likely to be more powerful in explaining a scientific phenomenon? a) component c, because a theory is often passed on possibility and not certainty b) component d, because a hypothesis is often based on possibility not certainty c) component c, because the ability to explain several occurrences in the natural world is a characteristic of a hypothesis d) component d, because the ability to explain several occurrences in the natural world is a characteristic of a theory
Answers: 3
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