1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shepuryov [24]
2 years ago
13

The following are formed as white precipitates in solution except

Chemistry
2 answers:
Firdavs [7]2 years ago
7 0

Answer:

i think it is iron

Explanation:

(III) hydroxide

aniked [119]2 years ago
6 0

Answer:

A. Iron (III) hydroxide

Explanation:

Orange-brown or rust

You might be interested in
How do you write 3.40 x 10 to the eighth power in standard form?
solong [7]

Answer:

272

Explanation:

hope it helps i double checked the math :D

7 0
3 years ago
A student weighs an empty flask and stopper and finds the mass to be 55.844 g. She then adds about 5 mL of an unknown liquid and
Oduvanchick [21]

Answer :

(a) The pressure of the vapor in the flask in atm is, 0.989 atm

(b) The temperature of the vapor in the flask in Kelvin is, 372.7 K

    The volume of the flask in liters is, 0.2481 L

(c) The mass of vapor present in the flask was, 0.257 g

(d) The number of moles of vapor present are 0.00802 mole.

(e) The mass of one mole of vapor is 32.0 g/mole

Explanation : Given,

Mass of empty flask and stopper = 55.844 g

Volume of liquid = 5 mL

Temperature = 99.7^oC

Mass of flask and condensed vapor = 56.101 g

Volume of flask = 248.1 mL

Barometric pressure in the laboratory = 752 mmHg

(a) First we have to determine the pressure of the vapor in the flask in atm.

Pressure of the vapor in the flask = Barometric pressure in the laboratory = 752 mmHg

Conversion used :

1atm=760mmHg

or,

1mmHg=\frac{1}{760}atm

As, 1mmHg=\frac{1}{760}atm

So, 752mmHg=\frac{752mmHg}{1mmHg}\times \frac{1}{760}atm=0.989atm

Thus, the pressure of the vapor in the flask in atm is, 0.989 atm

(b) Now we have to determine the temperature of the vapor in the flask in Kelvin.

Conversion used :

K=273+^oC

As, K=273+^oC

So, K=273+99.7=372.7

Thus, the temperature of the vapor in the flask in Kelvin is, 372.7 K

Now we have to determine the volume of the flask in liters.

Conversion used :

1 L = 1000 mL

or,

1 mL = 0.001 L

As, 1 mL = 0.001 L

So, 248.1 mL = 248.1 × 0.001 L = 0.2481 L

Thus, the volume of the flask in liters is, 0.2481 L

(c) Now we have to determine the mass of vapor that was present in the flask.

Mass of flask and condensed vapor = 56.101 g

Mass of empty flask and stopper = 55.844 g

Mass of vapor in flask = Mass of flask and condensed vapor - Mass of empty flask and stopper

Mass of vapor in flask = 56.101 g - 55.844 g

Mass of vapor in flask = 0.257 g

Thus, the mass of vapor present in the flask was, 0.257 g

(d) Now we have to determine the number of moles of vapor present.

Using ideal gas equation:

PV = nRT

where,

P = Pressure of vapor = 0.989 atm

V = Volume of vapor  = 0.2481 L

n = number of moles of vapor = ?

R = Gas constant = 0.0821 L.atm/mol.K

T = Temperature of vapor = 372.7 K

Putting values in above equation, we get:

(0.989atm)\times 0.2481L=n\times (0.0821L.atm/mol.K)\times 372.7K\\\\n=0.00802mole

Thus, the number of moles of vapor present are 0.00802 mole.

(e) Now we have to determine the mass of one mole of vapor.

\text{Mass of one mole of vapor}=\frac{\text{Mass of vapor}}{\text{Moles of vapor}}

\text{Mass of one mole of vapor}=\frac{0.257g}{0.00802mole}=32.0g/mole

Thus, the mass of one mole of vapor is 32.0 g/mole

8 0
3 years ago
How do you actually know the chemical formulae for the ionic compound
qaws [65]
If you have to write the chemical formula of a simple, binary ionic compound given the name of the compound, you follow a set of three steps. Let's go through them using magnesium chloride as an example. Write the symbols for the cation and the anion: Mg and Cl. Determine the charge on the cation and anion.
3 0
2 years ago
A toaster transforms electrical energy into _____ energy and _____ energy. A. heat; light B. heat; kinetic C. heat; potential D.
scoray [572]

A. heat; light energies

5 0
3 years ago
A blacksmith melts and shapes a block of iron into a blade. She then sets the blade, whose edges are molten, outside, where it i
Margaret [11]
The answer is C due to the rain making contact with the iron it creates moisture which cause the iron to begin oxidizing which causes the iron to rust which is a chemical reaction then the blade which was once malleable because it was heat becomes harden and rust is created as I said before the physical aspect of the iron chances due to rust developing on it it's no longer has the luster it once had
4 0
3 years ago
Read 2 more answers
Other questions:
  • 4. What animal resources from other continents benefited South Americans?
    15·1 answer
  • Which type of energy would have nothing to do with ironing clothes?
    10·2 answers
  • What is the molecular formula of a compound with the empirical formula HSO4 and a formula mass of 194.13 amu?
    9·1 answer
  • Why does a catalyst work for a long time before it needs replacing?
    7·1 answer
  • Aldehydes and ketones can be halogenated at their α-position by reaction with Cl2, Br2, or I2, under acidic conditions. Using Br
    5·1 answer
  • Which element has fewer than 4 dots In its Electron dot diagrams
    10·1 answer
  • A Compound Contains Two or more _______. 
    11·2 answers
  • DUE IN A FEW!!!!!! PLS HELP
    8·2 answers
  • I NEED HELP PLS. I WILL GIVE 10 POINTS PLEASEEEEEEES
    6·2 answers
  • How is scientific observation done properly and safely using laboratory equipment?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!