Is edible oil dense or is water dense

Water, you drop some oil into the water. The oil floats, indicating that the water is dense
Oil: 0.8kg/dm3
Water: 1kg / dm3

How many bottles of acetylene does it take to cut with oxygen or acetylene?

Assuming that the reaction is complete and the bottle sizes are equal, we can know from the equation
2c2h2 + 5o2 = = ignition = = 4co2 + 2H2O
2 5
X 1 x = 0.4, that is to say, 0.4 bottles of acetylene need to be consumed

Under the same conditions, the volume ratio of ethylene and acetylene in the mixed gas AML is calculated
A． (2a-b)/(3a-b) B． (a-2b)/(a-b)
C． (2b-5a)/(6a-2b) D． (2a-b)/(6a-2b)

Let the volume of C2H4 and C2H2 be x and y, respectively
C2H4 + 3O2 = CO2 + 2H2O
2C2H2 + 5O2= 4CO2 + 2H2O
We obtain (1) x + y = a; (2) 3x + 5Y / 2 = B
The solution is: x = 2b-5a; y = 6a-2b
The answer is C

RELATED INFORMATIONS

1. The volume of oxygen required for complete combustion of ethylene and acetylene is 2 or 7 times that of the original mixture The volume of hydrogen consumed in total addition reaction is twice that of the original gas mixture In addition, is ethane produced by the addition of acetylene and hydrogen here
2. 10 ml of gaseous hydrocarbon was fully burned in 50 ml of oxygen, and liquid water and 35 ml of mixed gas were obtained I figured out that there are 6 h, so how can I determine the number of C The answer is C2H6 and C3H6 I have C4H6, too. C2H6 and C3H6
3. Under the same temperature and pressure, 10ml of a gaseous hydrocarbon is fully burned in 50ml of oxygen to obtain liquid water and 35ml of mixed gas. What is the molecular formula of the hydrocarbon?
4. The relationship between Q1 and Q2 is () A. Q1 > Q2B. Q1 < q2c. Q1 = q2D
5. If a certain amount of hydrogen combustion product is gaseous water and the product is liquid water, will the heat generated be the same
6. What is the reason for the change of oxygen into liquid oxygen?
7. Oxygen conversion Hello, I want to know how many kilos of liquid oxygen an oxygen cylinder is filled with 12 kilos of oxygen. That is to say, when I put up 12 kilos of gas oxygen and the same liquid oxygen at the same time, I put them out at the same time
8. Comparison between oxygen and liquid oxygen A. The molecules are different in size B. The composition of the molecules has changed C. The molecules of liquid oxygen stop moving D. The intervals between molecules are different
9. How much is the gas consumption of gas water heater? How many cubic meters of gas is used in an hour? My 20 minute side,
10. Liquid volume formula
11. How to measure the density of edible oil Just use an empty bottle and a balance for water and oil The bottle has no scale, the balance has weight
12. How to measure the density of edible oil
13. Half of the oxygen in the oxygen bottle is used and the density becomes half of the original because the volume remains unchanged. But why does the volume remain unchanged
14. There is an oxygen cylinder with a volume of 10L, which contains oxygen with a density of 2.5kg/m & sup3; and what is the density of the remaining oxygen in the cylinder when 15g oxygen is used in a certain rescue
15. For an oxygen cylinder, the density of the gas in the cylinder is ρ 0 when it is just started. After 13 mass of oxygen is used, the density of the oxygen in the cylinder is () A. ρ0B. 13ρ0C. 23ρ0D. 2ρ0
16. If there is a 10 DM3 oxygen cylinder with a density of 2.5 kg / m3, what is the density of residual oxygen if 5 g is used at one time? This is a physical problem, please help!
17. The density of oxygen contained in a steel cylinder is 8 kg / m3. If one quarter of the oxygen is used for one welding, the density of the remaining oxygen in the cylinder is 0
18. For a certain mass of gas, its density p is the inverse proportional function of its volume V. When v = 10 cubic meters, P = 1.291 1. Finding the functional relationship between P and V 2. If v = 6.45M & # 179, the density of the gas can be obtained
19. When v = 10m3, ρ = 1.43kg/m3, then the functional relationship between ρ and V is______ ．
20. There is a steel cylinder with oxygen of mass m and density ρ. When oxygen of mass m / 4 is used, the remaining gas density in the cylinder is 0

Is edible oil dense or is water dense