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4 years ago

Which best compares a molecule that has a trigonal planar shape with one that has a trigonal pyramidal shape?

Chemistry

1 answer:

Juli2301 [7.4K]4 years ago

7 0

Answer:

B. They both contain three atoms around the central atom.

Explanation:

Do the unit test on edg20 and got it right!

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Which of the following best describes how water evaporates? *

Evgesh-ka [11]

The answer is A because water can only evaporate if a liquid substances becomes gas , in this case it’s the water. When water is heated it evaporates. The molecule moves and vibrates so quickly that they can move to the atmosphere

4 0

3 years ago

A 63 gram piece of magnesium absorbs 6689 joules of heat. The final temperature is 663 degrees Celsius. What was the initial tem

Gemiola [76]

Answer:

$559^{\circ}C$

Explanation:

When heat is supplied to a substance, the temperature of the substance increases according to:

$Q=m C (T_f-T_i)$

where

Q is the amount of heat supplied

m is the mass of the substance

C is the specific heat capacity of the substance

$T_i$ is the initial temperature

$T_f$ is the final temperature

For the sample of magnesium in this problem, we have:

m = 63 g is the mass

Q = 6689 J is the hear supplied

C = 1.023 J/gC is the specific heat capacity

$T_f=663^{\circ}C$ is the final temperature

Solving the formula for $T_i$ , we find the final temperature:

$T_i = T_f-\frac{Q}{mC}=663-\frac{6689}{(63)(1.023)}=559^{\circ}C$

6 0

3 years ago

Please answer the following on the picture<br>ASAP PLZZZ

maxonik [38]

30. Atomic Number is 17

31. Chlorine

32. 35.45

33. Nonmetal

34. 3 energy levels

35. 7 Valence electrons

3 0

4 years ago

Enter the molecular formula for butane, C4H10

algol [13]

Answer:

C4H10

Explanation:

you already written it :)

6 0

3 years ago

Which of the following pairings usually forms molecular compounds?

nikdorinn [45]

A nonmetal and a nonmetal will make molecular compounds like H2O and CO2

7 0

3 years ago