3 years ago

A solution of pH 3 was mixed with a solution of pH 9 what The final pH could be?

Chemistry

1 answer:

Gekata [30.6K]3 years ago

5 0

Answer:

Explanation:

can't be higher or lower than what you started with

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If you had a mixture that was found to contain 1.05g SiO2, 0.69g Cellulose and 1.82g Calcium Carbonate. What percentage calcium

boyakko [2]

Percentage by mass = (mass of substance / total mass) x 100
= 1.82 / (1.05 + 0.69 + 1.82) x 100
= 51.1% if Calcium Carbonate

6 0

2 years ago

One side of a plane wall is held at 200°C while the other side is exposed to a convective environment having T10°C and h 100 W/m

adelina 88 [10]

Answer:

$\frac{\dot Q}{A} = 151.33 W/m^2$

$T_c = 25.153°C$

Explanation:

Given data:

one side wall temperature 200°C

other side wall temperature 10°C

h = 100 W/m^2 °C

k = 2.6W/m °C

wall thickness L = 30 cm

we know that heat flux is given as

$\frac{\dot Q}{A} = \frac{ T_A - T\infty}{\frac{L}{K} + \frac{1}{h}}$

$\frac{\dot Q}{A} = \frac{ 20- 10} {\frac{0.30}{2.6} + \frac{1}{100}}$

$\frac{\dot Q}{A} = 151.33 W/m^2$

$1515.33 W/m^2 = \frac{ T_A - T_c}{\frac{L}{K}}$

solving for temperature for cold surface is given as

$T_c = -1515.33 \times \frac{0.3}{2.6} + 200$

$T_c = 25.153°C$

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3 years ago

Point in a titration at which the quantity of titrant is exactly sufficient for stoichiometric reaction with the analyte.

Olegator [25]

Thats called equivalence point

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3 years ago

5.75 moles of H2 gas to liters at STP

antiseptic1488 [7]

5.75mol (22.4L/1mol) = 128.8L

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2 years ago

What is one of the products produced when al(no3)3 and cao react together? alo2 cano3 al2o3 ca(no3)3?

cricket20 [7]

The chemical balanced equation for the given question is this:
2AL[NO3]3 + 3CaO = AL2O3 + 3Ca[NO3]2.
So, one of the product formed is AI2O3. The other product is Ca[NO3]2.
The reaction is a double replacement reaction.

8 0

3 years ago

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