Answer:
Explanation:
We are asked to convert 1.45 moles of potassium hydroxide (KOH) to grams.
<h3>1. Molar Mass</h3>
The molar mass is the mass in grams of 1 mole of a substance. The values are found on the Periodic Table. They are the same as the atomic masses but the units are grams per mole (g/mol) instead of atomic mass units (amu).
We have the compound KOH. Look up the molar masses of the individual elements.
- Potassium (K): 39.098 g/mol
- Oxygen (O): 15.999 g/mol
- Hydrogen (H): 1.008 g/mol
The formula for the compound has no subscripts, so there is 1 mole of each element in 1 mole of the compound. We can simply add the molar masses.
- KOH: 39.098 + 15.999 + 1.008 =56.105 g/mol
<h3>2. Convert Moles to Grams</h3>
Based on the molar mass, there are 56.105 grams of KOH in 1 mole. Create a ratio using this information.
We are converting 1.45 moles of KOH to grams, so we multiply by this value.
The units of moles of KOH cancel.
<h3>3. Round </h3>
The original measurement of moles has 3 significant figures, so our answer must have the same.
For the number we calculated, that is the tenths place. The 5 in the hundredths place (81.3<u>5</u>225) tells us to round the 3 up to a 4.
<u>Approximately 81.4 grams of potassium hydroxide </u>are represented by 1.45 moles.
B, c, and d are greenhouse gases
The 4 second rule is used to estimate your total stopping distance under ideal conditions.
This one is from G_oogle
The Milkmaid and Her Pail
A farmer's daughter had been out to milk the cows, and was returning to the dairy carrying her pail of milk upon her head. As she walked along, she fell a-musing after this fashion: "The milk in this pail will provide me with cream, which I will make into butter and take to market to sell. With the money I will buy a number of eggs, and these, when hatched, will produce chickens, and by and by I shall have quite a large poultry-yard. Then I shall sell some of my fowls, and with the money which they will bring in I will buy myself a new gown, which I shall wear when I go to the fair; and all the young fellows will admire it, and come and make love to me, but I shall toss my head and have nothing to say to them." Forgetting all about the pail, and suiting the action to the word, she tossed her head. Down went the pail, all the milk was spilled, and all her fine castles in the air vanished in a moment!
- Do not count your chickens before they are hatched.
I tried to make my own but it turned out bad...
Hope this helps ❤️
A reaction occurs between the two gases Chlorine monofluoride (ClF) and Fluorine (F₂) when they are added together and as a result of the reaction a compound named, Chlorine trifluoride (ClF₃) is formed.
The reaction which occurs by addition of Chlorine monofluoride (ClF) and Fluorine (F₂) is as follows -
ClF (g) + F₂ (g) = ClF₃ (l)
When one molecule of Chlorine monofluoride (ClF) reacts with one molecule of Fluorine (F₂) gas, both the gases react together to form one molecule of Chlorine trifluoride (ClF₃) which is a liquid. Therefore, the above reaction is already balanced.
Chlorine trifluoride (ClF₃) is a greenish-yellow liquid which acts as an important fluorinating agent and is also an interhalogen compound (compounds that are formed by mixing two different halogen compounds together). Other than it's liquid state ClF₃ also can exist as a colorless gas. This compound ClF₃ is a very toxic, very corrosive and powerful oxidizer used as an igniter and propellent in rockets.
Learn more about Chlorine monofluoride (ClF) here-
brainly.com/question/17129650
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