All categories

3 years ago

The surface temperature on Venus may approach 753 K. What is this temperature in degrees Celsius?

Chemistry

1 answer:

Darya [45]3 years ago

7 0

Answer:

461.85 degrees Celsius

You might be interested in

Which describes the heliocentric model of the solar system? (1 point)

maw [93]

Answer:

Explanation:I alredy know this i am in 7th gread

6 0

3 years ago

A certain substance X has a normal freezing point of -6.4 C and a molal freezing point depression constant Kf= 3.96 degrees C.kg

Brut [27]

Answer: $1.0\times 10^2g$

Explanation:

Depression in freezing point is given by:

$\Delta T_f=i\times K_f\times m$

$\Delta T_f=T_f^0-T_f=(-6.4-(13.6))^0C=7.2^0C$ = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte like urea)

$K_f$ = freezing point constant = $3.96^0C/m$

m= molality

$\Delta T_f=i\times K_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}}\times \text{weight of solvent in kg}}$

Weight of solvent (X)= 950 g = 0.95 kg

Molar mass of non electrolyte (urea) = 60.06 g/mol

Mass of non electrolyte (urea) added = ?

$7.2=1\times 3.96\times \frac{xg}{60.06 g/mol\times 0.95kg}$

$x=1.0\times 10^2g$

Thus $1.0\times 10^2g$ urea was dissolved.

8 0

4 years ago

How many particles are in 12.47 grams of NaCl?

jeka94

If we are talking about moles then the answer to that is 0.22

5 0

3 years ago

List the numbers of protons, neutrons, and electrons in Chlorine-18.

OLEGan [10]

17 protons 17 electrons 18 neutrons

7 0

3 years ago

Arrange the following elements in order from least to greatest electronegativity:<br> Ca, F, Ne, Fe?

Burka [1]

Answer:

The electronegativity from order of least to highest is:

Ne, Ca, Fe, F

Explanation:

Elements in the periodic table have been arranged based on their level of electronegativity (which is the ability of an atom to attract electrons).

According to Paulings scale of rating elements based on their electronegativity, the electronegativity value of Fe, Ca, Ne, and F are 1.83, 1, 0 and 3.98 respectively.

Hence, based on Pauling scale, the order of electronegativity from least to highest is:

Ne > Ca > Fe > F

6 0

3 years ago