Chemistry, 15.11.2019 21:31 Juniper816
What best explains why a person can become sunburned by spending too much time at the beach? sunlight is an electromagnetic wave that gains energy as it travels through air to reach the person. sunlight is an electromagnetic wave carrying energy that is absorbed by the skin. sunlight is a mechanical wave that vibrates the skin particles to produce heat. sunlight is a mechanical wave, and its frequency matches the natural frequency of skin to make heat.
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Chemistry, 21.06.2019 17:30
What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?
Answers: 2
Chemistry, 22.06.2019 12:00
Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?
Answers: 1
Chemistry, 22.06.2019 19:20
Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
Answers: 3
Chemistry, 23.06.2019 00:10
Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas
Answers: 3
What best explains why a person can become sunburned by spending too much time at the beach? sunlig...
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