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Matematica
Middle School Math
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Name _____________________________
Date ___________________
Frazioni
Completa.

1.  If a solution of MgCl is3/4M, what will its concentration be if it is diluted by29%? Express your answer as a fraction.

2.  A mixture of organic compounds is distilling. As the boiling point of each compound in the mixture is reached, the liquid boils at that temperature until the entire compound is gone and then the temperature rises to the boiling point of the next higher boiling compound. Compound-A boiled at60C e ora la temperatura è salita a84C and stabilized. The Boiling point of compound-B is1C. From this we can conclude that the boiling point of compound-A is _________________ of the boiling point of compound-B. (Note: Fill in the blank above with a fraction that makes the statement true)

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4.  Three labs measured the iron content of an ore sample sent to them by Terra-Chem, Inc. The first lab reported29mg di ferro per cm3. The second lab reported a concentration of4/5quello e il terzo laboratorio ha riferito un valore di circa1 1/10of the value reported by lab 2. What was the iron concentration reported by lab 3? Round your answer to the nearest hundredth of a milligram.

5.  Un rivestimento dal sapore buono deve essere messo sulla nuova compressa per la febbre della Micromed. Ciascuna compressa senza il rivestimento ha una massa di350mg. Gli esperimenti hanno mostrato che il rivestimento non può costituire più1/39of the mass of each tablet (otherwise some of the tablet processing machinery doesn't work right). So what is the maximum mass of the coating allowed on a 350-mg tablet? Round your answer to the nearest hundredth.

6.  A 500-gram package of growth powder made by Z-Globe contains0.1% yeast extract by mass. What fraction of the powder is not yeast extract?



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Iscritti a edHelper - Crea un nuovo stampabile
La soluzione include anche le domande
La soluzione fornisce solo le risposte
Nessuna soluzione
Not a subscriber?  Sign up now for the subscriber materials!

Frazioni
Matematica
Middle School Math
Frazioni

This worksheet still contains English.
edHelper is working on the translation