What is a physical property of milk

3. Suppose a student determined the empirical formula of the compound to be K3[Fe(C2O4)3] 2H2O, rather than the correct formula

yuradex [85]

Answer:

Explanation:

When determining empirical formulas of hydrates we have to find the mass of water which left the hydrate when heating The sample. This amount of water calculated will provide us with the correct ratio of moles water / moles anhydrate since moles water > moles anhydrate. The mistake might have been done while determining the water that left the sample so then we see and impropre result in ratios.

8 0

3 years ago

Which of the following is true regarding the transition elements?

e-lub [12.9K]

Pls complete your question

8 0

4 years ago

It takes 42.25 ml of 0.0500 M Na2S2O3 solution to completely react with the iodine present in a 150.0 ml iodine solution. How ma

svlad2 [7]

Answer:

There were 0.268 grams I2 present

Explanation:

Step 1: Data given

Volume of Na2SO3 = 42.25 mL = 0.04225 L

Molarity of Na2SO3 = 0.0500 M

Volume of iodine = 150.0 mL

Step 2: The balanced equation

I2 + 2 Na2SO3 → Na2S2O6 + 2 NaI

Step 3: Calculate moles of Na2SO3

Moles Na2SO3 = molarity * volume

Moles Na2SO3 = 0.0500 M * 0.04225 L

Moles Na2SO3 = 0.0021125 moles

Step 4: Calculate moles I2

For 1 mol I2 we need 2 moles Na2SO3

For 0.0021125 moles Na2SO3 we have 0.00105625

Step 5: Calculate mass of I2

Mass I2 = moles * molar mass

Mass I2 = 0.00105625 * 253.8 g/mol

Mass I2 = 0.268 grams

There were 0.268 grams I2 present

3 0

4 years ago

Read 2 more answers

A student used a sling psychrometer to measure the humidity of the air. If the relative humidity was 65% and the dry bulb temper

nataly862011 [7]

Answer:

3° C

Explanation:

The dew point temperature is the temperature of the air to which the air must be cooled so as to become saturated with the water vapor.

Here it is given that the relative humidity in the air, RH= is 65%

And the dry bulb temperature is T = 10° C

Therefore, the dew bulb temperature is,

$Td= T - \frac{100-RH}{5}$

$Td= 10 - \frac{100-65}{5}$

= 10 - 7

= 3° C

So the dew point temperature is 3° C .

3 0

3 years ago

When an electron moves up to higher energy levels, the atom Choose... a photon of light whereas the atom Choose... a photon of l

Alona [7]

Answer:

Explanation:

When an electron moves from a lower energy level to a higher energy level, energy is absorbed by the atom. When an electron moves from a higher to a lower energy level, energy is released and photon is emitted.

this emitted photon is depicted as a small wave-packet being expelled by the atom in a well-defined direction.

5 0

3 years ago