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cupoosta [38]
3 years ago
9

What type of Machine is a handrail

Chemistry
1 answer:
Elodia [21]3 years ago
4 0
Hey There!

Here is your answer:

The answer is a compound machine!

Hope this helps!
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What is the perecentage yield of a reaction in which 200g PCl3 reacts with excess water to form 128g HCl according to the f.F re
castortr0y [4]

Answer:

The percentage yield is 80.36% (see calculations in attachment).

Explanation:

The theoretical  yield of the reaction is the <u>amount of product that would result if all the  limiting reagent reacted.</u> The theoretical yield is calculated using the balanced equation.

In practice, the actual yield, or the <u>amount of  product actually obtained from a reaction</u>, is almost always less than the theoretical  yield.

To determine how efficient this reaction is, we need to calculate the percent  yield, which describes the <u>proportion of the actual yield to the theoretical yield.</u> It is  calculated as follows:

%yield = actual yield ÷ theoretical yield × 100%

First we need to make sure that the equation is properly balanced. In the question they provide the balanced equation.

Since water is in excess, we calculate the theoretical yield using PCl₃.

6 0
3 years ago
when sodium reacts with gold (III) chloride, gold metal and sodium chloride are formed. Balanced the equation and classify it
valentinak56 [21]

True the sodium reacts with the chlorine and makes table salt.
4 0
4 years ago
How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second?(Note that the half life o
Rom4ik [11]

Answer:

Use the activity formula,  

T1/2 = 4.468 x 10^9 yr x 365 x 24 x 3600 = 1.409 x 10^17 sec  

l = ln(2)/T1/2 = ln(2)/1.409 x 10^17 = 4.91932697 x 10^-18 s-1  

DN/Dt = lN, 265 = 4.91932697 x 10^-18 x N  

<u><em>N = 5.38 x 10^19 nuclei</em></u>

7 0
3 years ago
What does the nucleus do
mel-nik [20]
<span>The nucleus is the organelle present in eukaryotic cells with the main function in the control of all cell activities and maintaining the gene integrity. Namely, it contains the genetic material of the cell in the form of chromosomes (DNA molecules in complex with proteins). It is enclosed by the nuclear membrane which regulates the movement of proteins and RNA in and out of the nucleus.</span>
4 0
4 years ago
HELP<br> ME<br> PLEASE!!!!!!!!!!
kobusy [5.1K]

Answer:

the grass field I think

Explanation:

5 0
4 years ago
Read 2 more answers
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