Chemistry

What is convection? Transfer of heat through objects touching source Transfer of heat through direct physical contact Transfer of heat through electromagnetic waves Transfer of heat through the movement of particles
1 Answer
PLS HELP ME! por favor, aydame!
1 Answer
I need help with that box
1 Answer
Identify the atomHCHN
1 Answer
what is the first step of scientific method A.HypothesisB. questionC.controlD.procedures
1 Answer
Why is rain likely when warm, moisture-laden air meets cold air? A)The lighter warm air will rise and cool down, causing condensation and rain. B)The cold air moves faster and pushes the warm air away, causing condensation and rain. Eliminate C)The moisture in the warm air condenses on contact with the cold air, causing rain to fall. D)The cold air mixes with the warm air, reducing its temperature causing moisture to condense.
2 Answers
If all the deer disappeared from this community, which change would be mostlikely to occur?
2 Answers
3. The presence of the samea. fossilsb. rockson several continents supports the hypothesis of continental drift.c. neither a norbd. both a and b
1 Answer
The maximum amount of statie friction between this chairand the floor is 175 N.Which action would cause the chair to move to the left?A. Applying 100 N of force to the chair from the leftB. Applying 200 N of force to the chair from the leftO c. Applying 200 N of force to the chair from the rightO D. Applying 100 N of force to the chair from the right
2 Answers
How are plants,animals,and bacteria alike
2 Answers
If a gold bar is 16,000 g mass and 800 cm^3 volume what is the density?
1 Answer
Egg + Heat Proof of a Chemical Reaction
2 Answers
Which of the following is the conjugate acid of H2P04- ?A. HAP04O B. PO 3-O C. HP04-2O D. H3PO4
2 Answers
Why is Graphite soft
1 Answer
please helpAir masses that form over large bodies of water are moist. What process determines the amount of moisture in an air mass?
1 Answer
How many protons, neutrons, and electrons are in C -14
1 Answer
If a sample of copper is 215g, how many moles of copper atoms are in the sample?
1 Answer
In a certain chemical reaction, the bond energy of the products is 67 kJ andthat of the reactants is 52 kJ. Because energy is conserved, how muchpotential energy does the system release or absorb?O A. The reaction uses up 15 kJ of energy from the reaction system.B. The reaction creates 15 kJ of energy when bonds form.C. The reaction system absorbs 15 kJ of energy from thesurroundings.O D. The surroundings absorb 15 kJ of potential energy.
2 Answers
A deck of cards has dimensions 8.9cm x 5.72cm x 1.82 cm. What is the volume of the deck in cubic centimeters?
1 Answer
Compounds are created when atoms of different elements _____.1.form chemical bonds 2.have different chemical properties 3.form physical bonds 4.have similar chemical properties
1 Answer
organize the following elements in order of increasing atomic radius (Ge, He, Sr, O, Ba)
1 Answer
Nervous tissue transmits messages throughout the human body bycontracting.providing protection.conducting impulses.absorbing vital nutrients.
2 Answers
Why were enslaved Africans in high demand in the southern colonies?
2 Answers
what is heavier 1 pound of bricks or 1 pound of feathers
2 Answers