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3 years ago

Pls help me with this atomic number worksheet I will make you the brainiest worth 25 points

Chemistry

1 answer:

ELEN [110]3 years ago

7 0

Answer:

HELLO THERE!

I HOPE MY ANSWER WILL HELP YOU :)

Explanation:

PLEASE NOTE; I HAVE WRITTEN THE ATOMIC NUMBER IN BRACKETS, NEXT TO THE SYMBOL OF THE ELEMENT

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How many inches is in 10 cm? Use dimensional analysis to show your work. Include the work in your answer.

Serhud [2]

Answer:

5 inches

Explanation:

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2 years ago

The value for Kw is 1.0 x 10-14 at 298K, but this value is temperature dependent. Given what you know about Kw and acid/base che

Papessa [141]

Answer:

The correct answer is option b.

Explanation:

$H_2O\rightleftharpoons H^++OH^-$

The ionic product of water : $K_w$

$K_w=[H^+][OH^-]$

A pure water has equal concentration of hydrogen ions and hydroxide ions, hence neutral.

$K_w=[H^+][H^+]=[H^+]^2$

The ionic product of water at 283 K = $K_w=0.29\times 10^{-14}$

$K_w=[H^+]^2$

$0.29\times 10^{-14}=[H^+]^2$

$[H^+]=5.385\times 10^{-8} M$

The pH of the water at 283 k;

$pH=-\log [H^+]$

$=-\log[5.385\times 10^{-8} M]=7.26$

A pure water has equal concentration of hydrogen ions and hydroxide ions,So water will e neutral at this temperature also.

The correct answer is option b.

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3 years ago

The enzyme amylase will affect the breakdown of carbohydrates, but it will not affect the breakdown of proteins. The ability of

Alenkinab [10]

Answer:

Shape of the enzyme and its active site

Explanation:

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3 years ago

Which of the following solutions would be basic?

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E because all base have an OH in it

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3 years ago

2.5 gm of a sample of Nahco3 when strongly.

mr_godi [17]

Answer:

Sry but i hope u will get the right answer and have a great christmas only 3 more days!

Explanation:

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3 years ago