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ladessa [460]
3 years ago
15

Oceń prawdziwość podanych informacji w układzie okresowym pierwiastki chemiczne są złożone według NIK to jących się liczbą atomo

wych Z Jądro atomowe jest bardzo mały i leży

Chemistry
1 answer:
cluponka [151]3 years ago
3 0
Wow. What language is this?
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Please Help ASAP! Will Mark Brainliest
CaHeK987 [17]

Answer:

35. boiling point 100 Celsius

36. seven

sorry i dont know 37 AND 38. :(

Explanation:

8 0
3 years ago
Read 2 more answers
H2PO4-(aq) ⇆ H+(aq) + HPO42-( which ion plays the role of hydrogen ion donor and which one plays the hydrogen ion acceptor in BP
alexgriva [62]

Answer:

<u>H2PO4- is a proton donor and HPO42_ is a proton acceptor</u>

Explanation:

Step 1: What are hydrogen ion donor and acceptor

in the following reaction we see that:

⇒ H2PO4- is more likely to give a H+ ion to form HPO42-.  

⇒HPO42- is more likely to take a H+ ion, to form H2PO4-

The reaction of an acid in water solvent is described as a dissociation :

HA ⇔ H+ + A-

⇒where HA is a proton acid

So, H2PO4- = HA   and  HPO42- = A-

Acids are proton donors. So, <u>H2PO4- is a proton donor and HPO42_ is a proton acceptor</u>

6 0
3 years ago
Express the following number using scientific notation 5,610,000??
cestrela7 [59]
5.61 x 10^8 (this might not be entirely right, haven’t used scientific notation in a while)
5 0
3 years ago
Please help me, I am confused
Solnce55 [7]

Answer:

B

Explanation:

Ionic compound can conduct electricity

4 0
3 years ago
What is the pH if the [H+] concentration is 3 x10^-13​
Shkiper50 [21]

Answer:

pH = 12.52

Explanation:

Given that,

The [H+] concentration is 3\times 10^{-13}.

We need to find its pH.

We know that, the definition of pH is as follows :

pH=-log[H^+]

Put all the values,

pH=-log[3\times 10^{-13}]\\\\pH=12.52

So, the pH is 12.52.

6 0
3 years ago
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