4 years ago

What is thr valency of scadium

Chemistry

1 answer:

Hoochie [10]4 years ago

4 0

scandium is a transition metal and shows a valency of 3.

You might be interested in

if five gases contained in a cylinder each exert a pressure of 1.0 atm what is the total pressure exerted by the gases

UNO [17]

Answer:5.0 atm

Explanation:

See attached photo

6 0

3 years ago

Read 2 more answers

Which organ has cells that produce pepsin which break down protein

WINSTONCH [101]

Answer:

stomach

Explanation:

8 0

3 years ago

What are the elements of scientific method?

Digiron [165]

Answer:

The basic steps of the scientific method are: 1) make an observation that describes a problem, 2) create a hypothesis, 3) test the hypothesis, and 4) draw conclusions and refine the hypothesis.

7 0

3 years ago

At a particular temperature, K 3.39 for the reaction SO2(9) + NO2(9) SOs(9) +NO(9) If all four gases had initial concentrations

Korvikt [17]

Answer:

The equilibrium concentrations are:

[SO2]=[NO2] = 0.563 M

[SO3]=[NO] = 1.04 M

Explanation:

Given:

Equilibrium constant K = 3.39

[SO2] = [NO2] = [SO3] = [NO] = 0.800 M

To determine:

The equilibrium concentrations of the above gases

Calculation:

Set-up an ICE table for the given reaction

$SO2(g) + NO2(g)\rightleftharpoons SO3(g) + NO(g)$

I 0.800 0.800 0.800 0.800

C -x -x +x +x

E (0.800-x) (0.800-x) (0.800+x) (0.800+x)

The equilibrium constant is given as:

$Keq = \frac{[SO3][NO]}{[SO2][NO2]}=\frac{(0.800+x)^{2}}{(0.800-x)^{2}}$

$3.39=\frac{(0.800+x)^{2}}{(0.800-x)^{2}}$

x = 0.2368 M

[SO2]=[NO2] = 0.800 -x = 0.800 - 0.2368 = 0.5632 M

[SO3]=[NO] = 0.800 +x = 0.800 + 0.2368 = 1.037 M

4 0

3 years ago

Which is one way scientists indicate how precise And accurate their experimental measurements are?

nadezda [96]

. They make sure their experiments can be repeated

8 0

3 years ago