Answer:
2.41*10² m equals 2.41*10⁴ cm
Explanation:
The rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them. That is, what is intended with it is to find the fourth term of a proportion knowing the other three. Remember that proportionality is a constant relationship or ratio between different magnitudes.
If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) , the direct rule of three must be applied. To solve a direct rule of three, the following formula must be followed:
a ⇒ b
c ⇒ x
So:
In this case the rule of three can be applied as follows: if 1 m equals 100 cm, 2.41*10² m equals how many cm?
cm= 24100 = 2.41*10⁴
<u><em>2.41*10² m equals 2.41*10⁴ cm</em></u>
The concentration of hydrogen ions in a solution is a measure of its acidity. So the correct option is (b) false.
When an Arrhenius acid is dissolved in water, hydrogen ions are produced:
H+(aq) + A- = HA + H2O (aq)
Here, H+ is the hydrogen cation, A- is the solvated anion, also known as the conjugate base, and HA is the non-dissociated acid. When an Arrhenius base is dissolved in water, hydroxide ions are produced:
BOH + H2O → B+(aq) + OH-(aq)
Is a material with at least one hydrogen atom that has the ability to split apart in an aqueous solution to produce an anion and an H + ion (a proton), creating an acidic solution. Bases are substances that, when dissolved in water, create hydroxide ions (OH) and a cation, resulting in a basic solution.
Learn more about hydrogen here:
brainly.com/question/16979348
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Answer:
a. Too close to zero.
b. Higher than zero.
c. Lower than zero.
d. Too close to zero.
e. Higher than zero.
Explanation:
The entropy of a reaction, S, is positive when the disorder of the system increases. That is:
Solid → Liquid → Gas S>0
When S<0, the disorder decreases:
Gas → Liquid → Solid S<0
Thus:
a. H2(g)+Cl2(g)→2HCl(g)
2 moles of gas produce 2 moles of gas:
<em>S too close to zero.</em>
b. 2H2O2(l)→2H2O(l)+O2(g)
A liquid is producing a gas:
<em>S>0
</em>
c. CO(g)+3H2(g)→CH4(g)+H2O(g)
4 moles of gas produce 2 moles of gas, the disorder decreases:
<em>S<0</em>
d. CH4(g)+2O2(g)→CO2(g)+2H2O(g)
3 moles of gas produce 3 moles of gas:
<em>S too close to zero.</em>
e, 2SO3(g)→2SO2(g)+O2(g)
2 moles of gas produce 3 moles of gas.
<em>S>0</em>
C is the correct answer. For nonmetal-nonmetal compounds, use the Greek prefixes
Mono - 1
Di - 2
Tri - 3
Tetra - 4
Penta - 5
Hexa - 6
Hepta - 7
And so on...
The reason D is not right is because a and o cannot be next to each other in between prefix and element.
Hope this helps!
The answer is A because Ag and Cu switch places- a SINGLE change occurred :) hope this helped!!