The measure of distance from one point to another is?
Answers
If you have the coordinates of the 2 points, then the distance between them is
√ of [ (the difference in their x-values)² + (the difference in their y-values)² ]
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What did researchers at Virginia Tech try using to help reforest post-mining site soil?
Properties that make titanium useful for tennis rackets and wheelchairs
Answers
Out of the following given choices;
A. the size of the atoms in a substance
B. the number of molecules in a substance
C. the position of the electrons on the outer valence shells
D. the balance between intermolecular forces and kinetic energy
The answer is D. The kinetic energy of the molecules is determines by the temperatures of the substance. The higher the temperatures, the higher the kinetic energy of the molecules. The molecules subsequently move and collide with higher energies and overcome intermolecular forces. This allows the substance to changes state from solid to liquid and eventually to gas (with increasing kinetic energy).
This is important because by increasing or decreasing a substance's temperature, you are also adding or removing energy from it. And when a substantial amount of energy has been added or removed, a substance can change its state from solid > liquid > gas or the other way around.
B) Polaris
C) Both A & B
D) The north pole
Answers
Each parallel measures one degree north or south of the Equator, with 90 degrees north of the Equator and 90 degrees south of the Equator
Hope this helps!
Answer:
C) Both A and B
Explanation:
The axis of 0 degrees latitude is known as the Equator. With 90 degrees north of the Equator and 90 degrees south of the Equator, each parallel measures one degree north or south of the Equator. The North Pole is 90 degrees north latitude, and the South Pole is 90 degrees south latitude.
Answers
Answer is: 4) form an aqueous solution.
Physical property can be observed and measured without any changes in molecular composition. The same substance is present before and after the change. Making aqueous solution is physical change (solvatation).
Element reactions with acids, oxygen and chlorine are chemical change (chemical reaction combustion), because new substances are formed, the atoms are rearranged and the reaction is followed by an energy change (exothermic reaction because energy is released).
This is the only answer that can be observed without testing gear and with the naked eye.... Hope I helped ^-^
Answers
Answer:
- Iron
- Oxygen
Explanation:
Rusting of iron occurs during the reaction of iron and oxygen in the presence of moisture to form hydrous iron (III) oxide, which is a reddish brown substance.
By virtue of this, the atoms which are reactants in the redox reaction would e oxygen and iron.
I hope this was clear and easy to understand.
like and rate <3
an element
a compound
Answers
Answer:
≈ 0.70 g/cm³ (answer rounded up to 2 decimal places)
Explanation:
The mass of empty cylinder is 20g
The mass of water filling the cylinder = 30g - 20g = 10g
The mass of unknown liquid filling the cylinder = 27g - 20g = 7g
Density of water = 997 kg/m³
Converting this density to g/cm³ we get;
1kg = 1000g , 1m³ = 1000000cm³
So density = g/cm³ = 0.997 g/cm³
So the volume of water occupied by 10g is;
10 × 0.997 = 9.97 cm³
This volume is also occupied by 7g of the unknown liquid.
Density = mass/volume
Density of the unknown liquid = 7g ÷ 9.97cm³ = 0.702106319 g/cm³ ≈ 0.70 g/cm³ (answer rounded up to 2 decimal places)
Answers
P1 = 1 atm V1 = 1.09 L V2 = 0.374 L (from 374 mL)
Plug these into the Boyle's Law equation P1V1 = P2V2:
(1 atm)*(1.09 L) = (P2) * (0.374 L)
(1 atm)*(1.09 L)/(0.374 L) = P2
P2 = 2.91 atm