Chemistry

1. An atom has 6 protons, 6 neutrons, and 6 electrons. What is the charge of theatom's nucleus?A.+6B.+12C.-6D.-18
1 Answer
What is an indicator? What does it tell you about solutions?
1 Answer
6. What is one way a star with much more mass than the sun can end up?white dwarfred giantneutron starred dwarf
2 Answers
if the gas has a volume of 20 L at a temperature of 25 Celsius what is the volume of the gas when it is heated to 100C if the pressure remains constant
2 Answers
what are the strengths and weaknesses of the Mendeleev periodic table?
2 Answers
Match each label below with the appropriate term. Note: there may be more than one correct answer.nonbonding electronssigma bondrepresents two electrons
2 Answers
I think colloids areheterogeneousbecause _______________________________
1 Answer
Calculate the volume of a rock that has a mass of 24 g and a density of 8 g/mL
1 Answer
What gets heavier in an electrochemical cell?O A. The cathodeB. Negative ionsO C. The salt bridgeO D. The anode
2 Answers
Why is it important to have a control?IN SCIENCE.....SOUND CONTROLP.S don't make it sound like ur a genius
1 Answer
What do these two changes have in common?using a large magnet to remove pieces of iron from a junkyardrain forming in a cloudSelect all that apply.Both are caused by heating.Both are only physical changes.Both conserve mass.Both are chemical changes.
2 Answers
Mass can be changed into energy in a ____ reactionA)ChemicalB)Nuclear
1 Answer
3. Students were measuring distances and found one to be 2.04 m. When they asked the teacher if their measurement was correct, the teacher said, Actually, it is 2.16 m. What is the percent error?
1 Answer
Which of these processes are chemical reactions? Type the correct answer in each box.Boiling an eggCrushing spices veges rotting chopping vegesdew forming
1 Answer
A dark blue beaker labeled 100 millimeters Y has an arrow leading to a pale blue beaker labeled 99 millimeters H subscript 2 O. This has an arrow leading to a white beaker labeled 99 millimeters H subscript 2 O. Each arrow has a label 1 milliliter over it. The dark blue beaker has a box below it labeled Beaker number 1. The pale blue beaker has a box below it labeled Beaker number 2. The white beaker has a box below it labeled beaker number 3.Does taking 1 mL of solution Y (pure bleach) out of the first beaker change the solutions concentration? What would the concentration of the second beaker be? If Beaker #2 is a 1% solution of Y, and Beaker #3 is 1/100th of that in the final solution, what percentage solution would Beaker #3 be?
2 Answers
The metric unit of force is the Newton (N) , which is kgm/s2 .Convert 10 kgcm/s2 to Newtons.OPTIONS:A. 1101 NB. 1102 NC. 1105 ND. 1106 N
2 Answers
find the oxidation number of carbon in MgCO3
1 Answer
How many fluorine atoms are present in 6.30 g of C2F4
1 Answer
Which observation shows that a substance is malleable?O A. The substance can be stretched easily into wires.O B. The substance flattens out when struck with a hammerO C. The substance breaks apart when stretched.O D. The substance shatters when struck with a hammer.
2 Answers
How do homes lose thermal energy?I need TWO reasons on why we want to reduce the thermal loose.
1 Answer
I need help with my chemistry homework
1 Answer
Think of a creative title for a video about the states of matter
1 Answer
HELP PLEASEDescribe and illustrate how liquids are different then the other states of matter.
1 Answer
Which of the following occurs when a liquid becomes a gas
1 Answer