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nordsb [41]
3 years ago
6

Select the correct answer

Chemistry
2 answers:
Furkat [3]3 years ago
8 0

Answer:

B

Explanation:

physical changes do not change the chemical or molecular make up if a substance

Soloha48 [4]3 years ago
6 0

Answer:

B. may involve a change in phase but does not involve a change in the molecular structure.

Explanation:

This is because a physical change is when a substance in changed but remains the same substance. For example if you freeze liquid water into ice it is still H2O.

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Nancy rides her bike with a constant speed of 12 km/h. How far can she travel in 3 hours 20 minutes?
LekaFEV [45]

she will travel 40 km in 3 hours and 20 minutes

5 0
4 years ago
Relative to electrons and electron states, what does the ml quantum number specify
Anastaziya [24]
<span>Magnetic quantum number specify orientation of electrons in magnetic field </span>and number of electron states (orbitals) in subshells..
Magnetic quantum number (ml) specifies the orientation in space of an orbital of a given energy and shape . Magnetic quantum number divides the subshell into individual orbitals which hold the electrons, there are 2l+1 orbitals in each subshell. For example, p orbitals (and their electrons) have three orientations in spase (px, py and pz).
8 0
4 years ago
What volume (l) of 0.750 m kcl solution contains 25.0 g of kcl?
Effectus [21]
Conc = moles / Vol you have C but need to find moles 
moles KCl = mass / molar mass 
25 g / 74.55 g,p; 
0.335 moles 
So rearrange the formula to find volume. Vol = moles / Conc 
0.335 moles / 0.750 mol / L = 0.447 L or 447 mL

The answer in this question is 447 mL.
5 0
3 years ago
Read 2 more answers
When a substance is added to water, bubbles form. How can you confirm the type of change that took place?
weeeeeb [17]
A
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4 0
3 years ago
Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above
kaheart [24]

Answer: Potential energy: E p = m * g * h, where m = 0.10 kg, g = 9.81 m/s², h = 1.0 m; E p = 0.10 kg * 9.81 m/s² * 1.0 m = 0.981 J ≈ 0.98 J Answer: C) 0.98 J

Explanation: Suppose all of the apples have a mass of 0.10 kg. if one of the apples in the bowl (c) is 1.0 meter above the ground, what is its potential energy? 0.10 j 9.8 j 0.98 j 1.0 j

3 0
2 years ago
Read 2 more answers
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