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Chemistry
Chemistry
High School
c) A substance has a high melting point and conducts electricity. What type of structure does it have
Chemistry
High School
Research the future of energy production. What improvements to (or new methods of) electrical energy production are scientists currently developing? How will they improve on present methods of energy production (what makes these new methods better than the old)? What are the cons of these improvements?
Chemistry
College
I have a problem with solving this type of chemistry problem. Please Help!
Chemistry
High School
What eats a FawnsFoot Mussel?
Chemistry
Middle School
Which 3 characteristics are used to describe all waves, regardless of type? Check all that apply. Resting PositionFrequencyTroughAmplitudeCrestWavelength
Chemistry
College
Name three sources of atmospheric carbon dioxide.
Chemistry
College
Can someone please help. I have no idea how to do this
Chemistry
College
is the effect of hot and cold water on acid different?
Chemistry
College
An ammonia solution has a pH of 8.25. What is its [OH-]?
Chemistry
High School
How many atoms are in 80.45g of magnesium
Chemistry
College
convert 8.4 10^16 molecules of CO2 to moles
Chemistry
High School
the valence electrons of metals jump easily to a higher energy orbital when light shines on them then they all fall emiting the excess energy as light which property of metals is explained by this?
Chemistry
High School
Why does a light bulb turn in When you flip the switch to on?
Chemistry
College
Which of the following ideas did Greek philosopher Democritus contribute to the atomic theory? A. Matter is composed of only one kind of particle, which can be easily destroyed. B. Every element has a specific type of atom, which remains the same size in all forms of matter. C. All matter is composed of small particles, which combine to make larger objects. D. Each object is made up of one atom, which varies in size from very small to very large.I will mark the correct answer the brainliest
Chemistry
High School
The material used as a biological sensor is one dimension of 20 mm, the other Are in nanometers
Chemistry
Middle School
How do scientist categorize the electromagnetic spectrum?Into six sections based on frequency.Into seven sections based on frequency.Into six sections based on amplitude.Into seven sections bases on amplitude.
Chemistry
High School
Is sweat a chemical? I am curious to know! NO LINKS OR TROLLS
Chemistry
High School
how do you find a mole (i need an example) i hate chem pls help
Chemistry
College
List the four quantum numbers
Chemistry
College
A substance has a molar heat of combustion of -810.4 kj/mol. when 0.285 mol of the substance is burned in a calorimeter containing 8.60 kg of water, the increase in water temperature is:
Chemistry
High School
A tank of syngas produced by coal gasification contains 60.0% carbon monoxide, 30.0% hydrogen, and 10.0% carbon dioxide. What is the mass of hydrogen (in g) in 1.00 cubic meter of this syngas mixture at 1.00 atm and 25.0 C? (1 m = 1000 L)
Chemistry
High School
the ability to conduct electricity is a characteristic of metallic bonding. this characteristic is best explained by the presence of ________________.
Chemistry
College
what is wrong with the statement? "because there are no common factors in the molecular formula, k2co3 is also the empirical formula of potassium carbonate"
Chemistry
High School
What type of weathering involves changes in the size or shape of the rock? A: hydrolysis B: physical weathering C: pressure weathering D: chemical weathering
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