Login
Remember
Register
Answerscourse Q&A
Questions
Unanswered
Tags
Users
Ask a Question
Contact Us
Terms & Conditions
Privacy Policy
Ask a Question
Recent questions tagged chemistry
+13
votes
1
answer
According to one acid-base theory a molecule acts as an acid when the molecule
asked
Jun 4
by
answerscourse
(
100
points)
chemistry
+3
votes
1
answer
What is the rate constant of a reaction if rate = 1.5 (mol/L)/s, [A] is 1 M, [B] is 3 M, m = 2, and n = 1? k= rate [A]" [B]" A. 0.17 B. 13.5 C. 0.5 D. 4.5
asked
Jun 4
by
answerscourse
(
100
points)
chemistry
+6
votes
2
answers
100 POINTS +BRAINLIEST PLZ ANSWER ASAP Eduardo looks at stars through his telescope. He says that the star Sirius is brighter than the star Rigel. In reality, Rigel has a greater absolute brightness than Sirius. What can explain
asked
Jun 4
by
answerscourse
(
100
points)
chemistry
+14
votes
1
answer
SERIOUS ANSWERS ONLY! Explain the damage that can be caused by performing presumptive drug tests as confirmatory tests, making sure to cite one specific example to support your explanation. Proper spelling, grammar, and sentence s
asked
Jun 4
by
answerscourse
(
100
points)
chemistry
+13
votes
1
answer
What is the molecular formula of aluminum chloride containing 20.2% by mass of aluminum and 79.8% My mess of chlorine. The relative molecular mess is 267 g.
asked
Jun 4
by
answerscourse
(
100
points)
chemistry
+6
votes
1
answer
A gas has an initial volume of 2.4 L at a pressure of 1.5 atm and a temperature of 273 K. The pressure of the gas increases to 4.5 atm, and the temperature of the gas increases to 313 K. What is the final volume of the gas? 0.70 L
asked
Jun 4
by
answerscourse
(
100
points)
chemistry
+2
votes
2
answers
In the gaseous state, chlorine exists as a diatomic molecule cl2 (molar mass = 70.9 g/mol). calculate the number of moles of chlorine present in 130 g of chlorine gas.
asked
Jun 4
by
answerscourse
(
100
points)
chemistry
+3
votes
2
answers
Calculate the mass of oxygen produced from the decomposition of 75.0 g of potassium chlorate?
asked
Jun 4
by
answerscourse
(
100
points)
chemistry
+7
votes
1
answer
Complete combustion of 1.00 g of the hydrocarbon pagodane gives 3.38 g carbon dioxide. what is the empirical formula of pagodane?
asked
Jun 4
by
answerscourse
(
100
points)
chemistry
+3
votes
2
answers
Which could cause topsoil to be lost? A)wind and water erosion B)lack of use C)compaction D)desertification
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+15
votes
2
answers
Which statement best describes london dispersion forces? a: repulsive intramolecular forces b: attractive intramolecular forces c: repulsive intermolecular forces d: attractive intermolecular forces
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+7
votes
2
answers
Determine the best formula for reacting elements. calcium and iodine a. cal b. cal2 c. ca2l d. ca2l2
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+7
votes
2
answers
Which material is very strong and tough but shows very little elongation as it absorbs energy? spider silk rubber kevlar® concrete
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+7
votes
2
answers
An atom's lewis dot structure has three dots. which of the following elements could it be, and why? aluminum, because it is in group 13 and has three valence electrons. lithium, because it is a group 1 element with three total el
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+13
votes
2
answers
B) calculate the ratio of moles of h2o to moles of anhydrous kal(so4)2. note: report the ratio to the closest whole number. (show all work including units)
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+13
votes
1
answer
What is the chemical name of the covalent compound P4O9? A. tetraphosphorus nonaoxygen B. tetraphosphate nonoxygen C. tetraphosphide nonaoxide D. tetraphosphorus nonoxide
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+10
votes
1
answer
Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o     sncl2•4h2o     sncl
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+4
votes
1
answer
Consider two gases oxygen and nitrogen at stp. how old the kinetic energy of the gases be affected if we only increase the temperature of oxygen
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+12
votes
1
answer
A student places a small amount of water in a glass dish and then carefully places a small paperclip on the surface of the water. The paperclip floats. What happens if the student adds a drop or two of dish soap to the water? Expl
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
+9
votes
1
answer
Potassium chlorate (used in fireworks, flares, and safety matches) forms oxygen and potassium chloride when heated. kclo3(s) → kcl(s) + o2(g) [unbalanced] what mass of oxygen gas is formed if 26.4 g of potassium chlorate decompo
asked
Jun 3
by
answerscourse
(
100
points)
chemistry
Page:
1
2
3
4
...
220
next »
Most popular tags
mathematics
english
history
biology
health
physics
business
chemistry
arts
social-studies
spanish
computers-and-technology
geography
sat
law
engineering
advanced-placement-ap
medicine
french
world-languages
german
Welcome to Answerscourse Q&A, where you can ask questions and receive answers from other members of the community.
...