Explanation:
Density = mass/volume
1. Work out the density of ethanol and benzene
Ethanol - mass = 3.9 g and volume = 5 mL
Density = mass/volume =3.9/5=0.78g/mL
Benzene - mass=4.4g and volume = 5 mL
Density = mass/volume = 4.4/5=0.88g/mL
So Benzene is more dense
2. Density=mass/volume=25/7-2=5g/mL
The reason why the volume of the object is 7mL - 2mL is because the amount of displaced water is the volume of the object
3. For the Bohr Model, google the image of it.
Protons are positive charged
Neutrons are neutral
Electrons are negative charged
4. Main difference is the location of the electron in the atom.
Bohr Model : electrons orbits the nucleus in fixed paths
Electron cloud model: only the electron's probable location is determined
Solubility of KMnO4 in water is 6.4 g/100mL Which means maximum of 6.4 g of KMnO4 can dissolve in 100 mL of water. ... And in given situation, 0.35 moles are added to 500 mL of water which is off the limit and thus it cannot be dissolved completely.
50.00ml*(10^-3L/ml)*(3.91moles/L) = 0.196 mol
Answer:
Final mass = 159.5 g
Final temperature = 10 C
Final density = 1.00 g/ml
Explanation:
<u>Given:</u>
Beaker 1:
Mass of water = 44.3 g
Temperature = 10 C
Beaker 2:
Mass of water = 115.2 g
Temperature = 10 C
Density of water at 10C = 1.00 g/ml
<u>To determine:</u>
The final mass, temperature and density of water
<u>Calculation:</u>
![Final\ mass\ of \ water = Beaker\ 1 + Beaker\ 2 = 44.3 + 115.2 = 159.5 g](https://tex.z-dn.net/?f=Final%5C%20mass%5C%20of%20%5C%20water%20%3D%20Beaker%5C%201%20%2B%20Beaker%5C%202%20%3D%2044.3%20%2B%20115.2%20%3D%20159.5%20g)
Since there is no change in temperature, the final temperature will be 10 C
Density of a substance is an intensive property i.e. it is independent of the mass. Hence the density of water will remain constant i.e. 1.00 g/ml
Cs and F
Explanation:
The two elements on the periodic table that would be most reactive would be Cesium and Florine.
Florine is the most electronegative and the most reactive non-metal on the periodic table. It has a small size and needs just one electron to complete its octet.
Cesium is the most electropositive non-metal. It requires just a loss of one electron to be stable and have complete octet.
Cs and F are the most electropositive and elecronegative elements on the periodic table of elements.
learn more:
Periodic table brainly.com/question/2014634
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