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mart [117]
3 years ago
11

True or False? Not all compounds will dissolve in water.

Chemistry
1 answer:
In-s [12.5K]3 years ago
4 0

Answer:

False

Explanation:

Polar molecules and ionic compounds dissolve in water, not nonpolar molecules

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The The thermal conductivity of a sheet of rigid, extruded insulation is reported to be k=0.029 W/ m measured temperature differ
vfiekz [6]

Answer:

Heat flux = 13.92 W/m2

Rate of heat transfer throug the 3m x 3m sheet = 125.28 W

The thermal resistance of the 3x3m sheet is 0.0958 K/W

Explanation:

The rate of heat transfer through a 3m x 3m sheet of insulation can be calculated as:

q=-k*A*\frac{\Delta T}{\Delta X}\\\\q=-0.029\frac{W}{m*K}*(3m*3m)*\frac{12K}{0.025m}  =125.28W

The heat flux can be defined as the amount of heat flow by unit of area.

Using the previous calculation, we can estimate the heat flux:

heat \, flux=\frac{q}{A}=\frac{125.28 W}{9 m^{2} }  =13.92 W/m^{2}

It can also be calculated as:

q/A=-k*\frac{\Delta T}{\Delta X}

The thermal resistance can be expressed as

\Delta T=R_t*Q\\R_t=\Delta T/Q=\frac{\Delta X}{k*A}

For the 3m x 3m sheet, the thermal resistance is

R_t = \frac{\Delta X}{k*A}=\frac{0.025m}{0.029W/mK*9m^{2}}=0.0958 \, K/W

4 0
3 years ago
Oxyacids contains at least one h+ and an oxyanion. the " sulfurous " oxyacid contains the oxyanion ________.
Ulleksa [173]
The correct answer is Oxyanion Nitrite. Oxyanion is referred to as an ion which contains one or more oxygen atoms that are bonded to another chemical element. It has a generic formula of <span>A. </span>x<span>O </span>z− <span>y, wherein A, stands for a chemical element, while O, stands for an Oxygen atom</span>
7 0
3 years ago
How many significant digits are in 2804
docker41 [41]

Answer:

4 significant digits

Explanation:

Zeroes placed between other digits are always significant

4 0
3 years ago
The graph indicates the running route for Tobias.
Musya8 [376]

Answer: b

Explanation:

7 0
3 years ago
Read 2 more answers
Which of the following is a quemical property ?
saveliy_v [14]
One chemical property would be reactivity of a particular substance.
8 0
3 years ago
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