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klemol [59]
4 years ago
8

Find the density of a lead cylinder that has a mass of 5.0x10^1 grams and a volume of 6.36 cm^3

Chemistry
1 answer:
scZoUnD [109]4 years ago
4 0
Density = mass/volume = 50/6.36 = 7.86 g/cm^3

Hope this helps!
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True or false? different reactions require different catalysts.
lapo4ka [179]

True, different reactions require different catalysts. Hence, option 1 is correct.

<h3>What are catalysts?</h3>

A catalyst is a substance that speeds up a chemical reaction or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction.

Though a catalyst is supposed to remain unaltered at the end of the reaction, it does take part in the reaction by providing active centres for the reaction to take place.

By helping to form a suitable activated complex in the course of the reaction, the catalyst increases the rate of formation of the product, as well as its yield.

Therefore, a catalyst has to be reactant-specific to form the favourable activated complex or intermediate.

Hence, option 1 is correct.

Learn more about the catalysts here:

brainly.com/question/12260131

#SPJ1

8 0
2 years ago
Why does pepsinogen become activated at ph 2?
Katena32 [7]
////// it is pepsinogen //////
5 0
3 years ago
Ammonia (NH3) is produced in the human body as a waste product during the digestion of protein. How many moles of N2 will be nee
Bad White [126]

Answer:

43.5

Explanation:

there are 43.5 moles of N2

3 0
3 years ago
Determine the hydrogen ion concentration of solution B. [1]
bazaltina [42]
The hydrogen Ion concentration of solution  B is 
1.0 x  10^-5 or 0.000 010 M

You can see that this will be proportional to the amount of B's PH compared to A's

hope this helps
8 0
3 years ago
How do you calculate mass using density and volume?
skad [1K]
Example:

Mass = ?

Density = 25 g/mL

Volume = 5 mL

therefore:

d = m / V

25 = m / 5

m = 25 x 5

m = 125 g

hope this helps!

7 0
3 years ago
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