All categories

3 years ago

Why did Dalton think it was important to use his system of symbols for the chemical elements?

Chemistry

2 answers:

ZanzabumX [31]3 years ago

7 0

Answer:

the answer is a

Explanation:

i did the assignment and the correct answer is a. (i put b bcos other ppl here said its b but i got it wrong)

77julia77 [94]3 years ago

4 0

The answer is : A good luck :)

You might be interested in

The normal boiling point for acetone is 56.5°c. at an elevation of 5300 ft the atmospheric pressure is 630. torr. what would be

Flauer [41]

20.5 because the boiling point should decrease not increase

7 0

3 years ago

What is the pOH of 0.50 molar H3BO3?

Crazy boy [7]

Answer:

A. 10.25

Explanation:

Pkb =4.77

So pka = 14 - pka = 9.23

$Ka =10^{-pka}$

$H_3 BO_3 (aq)+ H_2 O(l) H_2 BO_3^- (aq)+H_3 O^+ (aq)$

Initial 0.50M 0 0

Change -x +x +x

Equilibrium 0.50M-x +x +x

$Ka =\frac {((x)(x))}{(0.50M-x)}$

$5.88\times10^{-10}= \frac {x^2}{(0.50M-x)}$

(-x is neglected) so we get

$5.88\times10^{-10}\times0.50=x^2\\\\x^2=2.94\times10^{-10}$

$x=\sqrt{x^2}=1.72\times10^{-5} M=H^3 O^{+}$

$pH=-log[H^3 O^+]\\\\pH=-log[1.72\times10^{-5}]\\\\pH=4.76$

pOH = 14 - pH

= 14 - 4.76

pOH = 9.24 is the answer

Option A - 10.25 is the answer which is close to 9.24

4 0

3 years ago

How many moles of carbon (C) are there in 92.5 g of C?

aksik [14]

Answer:

c are there 93.5 of c yan siguro

8 0

2 years ago

So2−3(aq)→so2−4(aq) (basic solution) express your answer as a chemical equation. identify all of the phases in your answer. so32

alexira [117]

Answer:

$SO_{3}^{2-}(aq.)+2OH^{-}(aq.)\rightarrow SO_{4}^{2-}(aq.)+H_{2}O(l)+2e^{-}$

Explanation:

The given reaction is an example of oxidation reaction. The step-by-step balancing procedure has been shown below:

Chemical equation: $SO_{3}^{2-}(aq.)\rightarrow SO_{4}^{2-}(aq.)$

Balance H and O in basic medium: $SO_{3}^{2-}(aq.)+2OH^{-}(aq.)\rightarrow SO_{4}^{2-}(aq.)+H_{2}O(l)$

Balance charge: $SO_{3}^{2-}(aq.)+2OH^{-}(aq.)\rightarrow SO_{4}^{2-}(aq.)+H_{2}O(l)+2e^{-}$

Balanced chemical equation:

$SO_{3}^{2-}(aq.)+2OH^{-}(aq.)\rightarrow SO_{4}^{2-}(aq.)+H_{2}O(l)+2e^{-}$

6 0

3 years ago

Are the properties of Rubidium more similar to those of cesium or those of strontium?

fenix001 [56]

More similar to Cesium

Explanation:

The properties of Rubidium are more similar to those of cesium compared to strontium.

Elements in the same group on the periodic table have similar chemical properties.

Rubidium and Cesium are located in the first group on the periodic table.
Other elements in this group are lithium, sodium, potassium and francium
Strontium belongs to the second group on the periodic table.
The first group have a ns¹ valence shells electronic configuration.
They are all referred to as alkali metals

Learn more:

Sodium brainly.com/question/6324347

Periodic table brainly.com/question/1704778

#learnwithBrainly

5 0

3 years ago