The bottle can hold 0.5kg water, and the maximum can hold 0.8 × 103kg / m3 kerosene______ kg．

The bottle can hold 0.5kg water, and the maximum can hold 0.8 × 103kg / m3 kerosene______ kg．

Then the volume of a bottle of water is v water = m water, ρ water = 0.5 kg, 1.0 × 103 kg / m3 = 5 × 10-4 m3; according to the meaning of the question, V kerosene = V water, then the mass of a bottle of kerosene is m kerosene = ρ kerosene, V kerosene = 0.8 × 103 kg / m3 × 5 × 10-4 m3 = 0.4 kg

A bottle can hold up to 1000g of water. How many g of kerosene can be held in this bottle? (P oil = 0.8x10 cubic, kg / M cubic)

V bottle = V water = m water / P water = 1000g / 1g / cm3 = 1000cm3
Full of kerosene, M = P oil, v = 0.8g/cm3x1000cm3 = 800g

How many kg of water can a 2.5L bottle hold? How much kerosene can it hold? (density: pwater = 1.0 * 10 to the power of 3 kg / m3)

The third power of M = PV = 1.0 * 10, the third power of kg / m times 2.5 times 10, the "negative" third power = 2.5kg

How much kerosene can a bottle hold 1kg of water? (ρ = 0.8x10 cubic kg / m3)

V = m / ρ = 1kg / 1x10 power = 1 / 1000m3 power
So m kerosene = V * ρ kerosene = 1 / 1000m3 power * 0.8x10 cubic kg / M cubic meter = 0.8kg
So it can hold 0.8kg kerosene

The formula of 1kg / M cube =? G / cm cube
formula

Because 1kg / M = 1000g / 100cm = 10 (g / cm)
So 1 (kg / M) ^ 3 = 1000 (g / cm) ^ 3

What is & amp; in English in Chinese?

If you really want to use symbols to express it, just use it. 1and1 = 2,1 = 2

What are the calculation methods of double integral and triple integral?

There are two methods of double integral: direct calculation and polar coordinate calculation~
There are three methods of triple integral: direct calculation, cylindrical coordinates and polar coordinates. There are two or two methods of integral~

What is the unit of light year? How to calculate the distance between Altair and vega?

Light year is a unit of distance, that is, the distance of light walking in one year is about 9460 billion kilometers. The distance between Altair and Vega is 16 light years, that is 151360 billion kilometers

(1) the railway line from Jiaozuo to Liuzhou is about 1638 meters long（

Fill in "kilometer"
Jiaozhou Liuzhou railway is a railway from Jiaozuo, Henan Province to Liuzhou, Guangxi Province, with a total length of 1645 km and 179 stations

Lagrange mean value theorem of higher numbers
In the following functions, the condition satisfying Lagrange mean value theorem on [1, e] is（
A.(ln(lnx))^2 B.(lnx)^2 C.2/(lnx) D.(x-2)^(1/3

Choose
B