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lapo4ka [179]
2 years ago
8

Please help me vote you in both questions for a can vote you brainiest

Chemistry
1 answer:
swat322 years ago
8 0

Answer:

2. B

3. B

Explanation:

The Newton’s first Law states that: “An object will remain at rest or in uniform motion in a straight line unless acted upon by a external force.”

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Scientists frequently use all of the following to support the theory that organisms change over time except.
Pie

Answer:

4

Explanation:

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3 years ago
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Magnesium chloride is an example of an ionic compound, which is a compound composed of what?
Fofino [41]
Magnesium chloride is an example of an ionic compound which is a compound composed of ?

Magnesium chloride is a compound which is composed of positive and negative ions. I hope this helps you :)



8 0
3 years ago
What is the correct formula for tetraphosphorous octaoxide<br> P4O10<br> P4O8<br> Ph4O8<br> P5O8
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Answer:

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8 0
2 years ago
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Physical Meaning of pKa Which of the following aqueous solutions has the lowest pH: 0.1 M HCl; 0.1 M acetic acid (pKa = 4.86); 0
ser-zykov [4K]

Answer:

<em>The solution with the lowest pH is 0.1 M HCl.</em>

Explanation:

Since the three solutions have the same concentration (0,1M) it is only necessary to look at the pKa of each solution.

Also, knowing that a higher pKa means a lower Ka, because pKa = -Log (Ka). Thus, a lower Ka means a lower concentration of protons with a higher pH ( pH = -Log [H+].

The HCl doesn't have a pKa because is a strong acid that dissociates completely. Therefore, this solution produces a lower pH. Looking at the pKa of acetic acid and formic acid solutions, the second with the lowest pH is the formic acid solutions and the higher pH is for the acetic acid solution.

3 0
3 years ago
Scientific endeavors is sometimes accompanied by negative trade offs true or false?
elena-14-01-66 [18.8K]
Idk bro i havent learned that yet
8 0
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