Answers: 3
Chemistry, 22.06.2019 12:30, hayleyconsole
Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
Answers: 3
Chemistry, 23.06.2019 07:20, msladycie8831
F1.5 mol of nabh4 react, how many moles of b2h6 are formed? 2 nabh4(aq) + h2so4(aq) β 2 h2(g) + na2so4(aq) + b2h6(g)
Answers: 1
Chemistry, 23.06.2019 09:00, joelpimentel
The concentration of ionic substances is important for the heart to beat. your heart responds to electrical impulses that travel through heart cells that are made up mostly of water. which properties of ionic compounds are important to support this function? solubility in water conductivity crystalline melting point
Answers: 3
What is the enthalpy change, in kJ mol
H,(g) + Cl,(g) β 2HCI(g)...
H,(g) + Cl,(g) β 2HCI(g)...
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