All categories

4 years ago

At standard pressure the boiling point of an unsaturated nano3(aq) solution increases when

Chemistry

2 answers:

patriot [66]4 years ago

5 0

Answer:

Explanation:

BabaBlast [244]4 years ago

4 0

Missing question:
(1) the solution is diluted with water.
(2) some of the NaNO3(aq) solution is removed.
(3) the solution is stirred.
(4) more NaNO3(s) is dissolved in the solution.
Answer is: (4) more NaNO3(s) is dissolved in the solution.
Unsaturated solution means that more of a substance can be dissolve (in this case sodium nitrate). If more sodium nitrate is dissolved, molality of solution is increased, eo ipso boiling point of solution.

You might be interested in

Elements are solid, liquid, and gas substances that can be found on Earth. Which statement best describes an

OleMash [197]

Answer:

Elements can be separated into smaller atoms

8 0

3 years ago

Consider the following reaction:2NOBr(g) 2NO(g) + Br2(g)If 0.412 moles of NOBr(g), 0.678 moles of NO, and 0.224 moles of Br2 are

Vaselesa [24]

Answer: $K_c=0.0587M$

Explanation: The given chemical reaction is:

$2NOBr(g)\rightleftharpoons 2NO(g)+Br_2(g)$

Equilibrium constant (Kc) in general is written as:

$K_c=\frac{[products]}{[reactants]}$

Note:- Coefficients are written as their powers

So, the Kc expression for the above reaction will be:

$K_c=\frac{[NO]^2[Br_2]}{[NOBr]^2}$

Equilibrium moles are given for all of them. Let's divide the moles by given liters to get the concentrations.

$[NOBr]=\frac{0.412mol}{10.3L}$ = 0.040 M

$[NO]=\frac{0.678mol}{10.3L}$ = 0.0658 M

$[Br_2]=\frac{0.224mol}{10.3L}$ = 0.0217 M

Plug in the values in the equilibrium expression to calculate Kc.

$K_c=\frac{(0.0658M)^2(0.0217M)}{(0.040M)^2}$

$K_c=0.0587M$

4 0

3 years ago

4. What is the role of the<br> benedict solution in testing for<br> presence of carbohydrates

Vanyuwa [196]

Answer:

it identifies reducing sugars (monosaccharide's and some disaccharides), which have free ketone or aldehyde functional group

Explanation:

It turns from turquoise to yellow or orange when it reacts with reducing sugars.

3 0

3 years ago

What contains 15 neutrons and 13 protons?

Alex

An isotope of Aluminium, a 'normal' Al atom would have a proton number of 13 (as this does not change in isotopes of the same element) but only 14 neutrons. This isotope of Al has 1 extra neutron than regular Al.

7 0

3 years ago

Compared to the charges of a proton the charge of an electron has

katrin [286]

4 because electrons and protons have the same magnitude and electron is - and proton is +.

8 0

3 years ago