All categories

3 years ago

Predict the precipitate when the double replacement reaction occurs: Ca(NO3)2(aq) + Na2CO3(aq) →

Physics

2 answers:

taurus [48]3 years ago

8 0

Ca(NO3)2(aq) + Na2CO3(aq) → 2NaNO3 + CaCO3⬇. NaNO3 is solution so CaCO3 is the precipitate formed.

seropon [69]3 years ago

3 0

Answer:The precipitate formed is calcium carbonate.

Explanation:

double replacement reaction is the chemical reaction in which two reactant exchanges their respective ions to give new substance as a product.

AB+CD→CB+AD

In a given reaction:

$Ca(NO_3)_2(aq)+Na_2CO_3(aq)\rightarrow 2NaNO_3(aq)+CaCO_3(ppt)$

When calcium nitrate reacts with sodium carbonate in aqueous they give white colored precipitate of calcium sulfate and aqueous solution of sodium nitrate.

You might be interested in

A point charge +2Q is at the origin and a point charge −Q is located along the x axis at x = d as in the figure below. Find a sy

Akimi4 [234]

Answer: A symbolic expression for the net force on a third point charge +Q located along the y axis

$F_N=k_e\frac{Q^2}{d^2}\times \sqrt{[4+\frac{1}{4}-\sqrt{2}]}$

Explanation:

Let the force on +Q charge y-axis due to +2Q charge be $F_1$ and force on +Q charge y axis due to -Q charge on x-axis be $F_2$ .

Distance between the +2Q charge and +Q charge = d units

Distance between the -Q charge and +Q charge = $\sqrt{2}d$ units

$k_e$ = Coulomb constant

$F_1=k_e\frac{(+2Q)(+Q)}{d^2}=k_e\frac{+2Q^2}{d^2} N$

$F_2=k_e\frac{(-Q)(+Q)}{(\sqrt{2}d)^2}=k_e\frac{-Q^2}{2d^2} N$

Net force on +Q charge on y-axis is:

$F_x=F_2sin 45^o=k_e\frac{-Q^2}{2d^2}\times \frac{1}{\sqrt{2}} N$

$F_y=F_1-F_2cos45^o$

$F_y=(F_1-F_2cos45^o)=(k_e\frac{+2Q^2}{d^2})-(k_e\frac{-Q^2}{2d^2}\frac{1}{\sqrt{2}})$

$F_N=\sqrt{F_x^2+F_y^2}$

$|F_N|=|k_e\frac{Q^2}{d^2}\times \sqrt{[4+\frac{1}{4}-\sqrt{2}]}|$

The net froce on the +Q charge on y-axis is

$F_N=k_e\frac{Q^2}{d^2}\times \sqrt{[4+\frac{1}{4}-\sqrt{2}]}$

4 0

3 years ago

Read 2 more answers

What will happen to a waves frequency if it’s speed increases and it’s wavelength remains the same?

VLD [36.1K]

Answer:Actually the wavelength is proportional to its speed and frequency. therefore the wavelength has no affect on the speed or frequency its the other way around.

Explanation:

6 0

3 years ago

A friend of yours is wearing a green shirt. Why is their shirt green?

IRISSAK [1]

Answer:

The answer is the shirt would disappear because I would eat him

4 0

3 years ago

A 9 × 1014 Hz laser emits a 8.8 μs pulse, 5.0 mm in diameter, with a beam energy density of 0.8 J/m3. The number of wavelengths

julsineya [31]

To solve this problem we will apply the concepts related to Frequency (Reverse to Period) and the description of the wavelength as a function of the speed of light at the rate of frequency.

Our Laser frequency is given as

$f = 9*10^{14}Hz$