The surface temperature on venus may approach 757 k. what is this temperature in degrees celsius? 757 k = the temperature on mercury may drop to -261 °f at night. what is this temperature in degrees celsius? -261 °f =

757 K = 484 °C

-261 °F = -163 °C

Explanation:

The formula to convert Kelvin to degrees Celsius is:

°C = K - 273.15 = 757 - 273.15 = 484 °C

The formula to convert °F to °C is:

°C = 5/9 (°F -32) = 5/9 (-261 - 32) = -163

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

the answer would be a