Explanation:
Never smoke near a place where hydrogen is generated or being used. Remove all possible sources of flame and sparks. Hydrogen should only be generated and used in a well ventilated out door area. Precautions must be taken to remove all possibilities of fire or explosion.
What's the problem ? Hardness is not the definition of a metal.
You need to expand your thinking. EVERY element is solid, liquid, and gas, over different ranges of temperature ... including all of the metals. There are only TWO elements that are liquid AT ROOM TEMPERATURE, and mercury is one of them. But on a mild day at the south pole, mercury is solid too.
Answer: Plastic. Out of all the raw materials for 3D printing in use today, plastic is the most common. ...
Powders. Today's more state-of-the-art 3D printers use powdered materials to construct products. ...
Resins. ...
Metal. ...
Carbon Fiber. ...
Graphite and Graphene. ...
Nitinol. ...
Paper.
Explanation:
The conversion of ethanol to ethanoic acid is an oxidation reaction.
Answer:
41.43 mL
Explanation:
First we <u>calculate the mass of NaOH in the original solution</u>:
- 25.0 % m/v means that in 100 mL of solution, there are 25 grams of NaOH.
- This means that in 5.80 mL, we would have (5.80 * 25/100) <u>1.45 grams of NaOH.</u>
Then we <u>calculate the volume of the diluted solution</u>, using the grams of NaOH (that remain the same throughout the dilution process):
- 1.45 g NaOH *
= 41.43 mL