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Elanso [62]
3 years ago
7

What is the proper attitude with which you should approach a laboratory experience

Chemistry
1 answer:
victus00 [196]3 years ago
6 0

the awnser is : b serious

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 What are some Nonliving things with each characteristic
bezimeni [28]

say, a fridge is a nonliving thing. but its characteristic is that it keeps food cold and hold the food (I think that's what you mean)
6 0
4 years ago
Write nuclear symbols for each of the isotopes Carbon-14 Cobalt-60 Gold-197 Uranium-235
Marina CMI [18]

Answer and explanation:

The nuclides with the same atomic number, but different mass numbers are isotopes.

So, in this case, each species will have the same atomic number and a different mass number, that will be the same that it is written in the name of the element:

\begin{gathered} -\text{ Carbon-14:}C_6^{14} \\  \\ -\text{ Cobalt-60: }Co_{27}^{60} \\  \\ -\text{ Gold-197:  }Au_{79}^{197} \\  \\ -\text{ Uranium-235: }U_{92}^{235} \end{gathered}

5 0
1 year ago
Question 3
aleksklad [387]

Answer:

The reverse reaction will increase.

Explanation:

If you increase amount of product of reaction, then reverse reaction will increase, and more H2 and O2 will be formed.

6 0
4 years ago
In a clinical trial of a cholesterol​ drug, 314314 subjects were given a​ placebo, and 1212​% of them developed headaches. For s
iragen [17]

Answer:

The values of n, p and q are 314, 0.12 and 0.88 respectively.

Explanation:

n is the number of subjects given a placebo. The value of n is 314.

p is the sample proportion of the subjects given a placebo that developed headaches. The value of is 12% = 0.12

q is the sample proportion of the subjects given a placebo that did not develop headaches. The value of q = 1 - p = 1 - 0.12 = 0.88

3 0
3 years ago
In a particular mass of kau(cn)2, there are 6.66 × 1020 atoms of gold. What is the total number of atoms in this sample?
Vinvika [58]

Total number of atoms in the sample is the sum of number of atoms of all the elements present in the sample.

Number of gold, Au atoms in KAu(CN)_2 = 6.66\times 10^{20} atoms     (given)

From the formula of compound that is KAu(CN)_2 it is clear that the number of potassium and gold are same whereas those of carbon and nitrogen are 2 times of them.

So, the number of atoms of each element is:

Number of potassium, K atoms in KAu(CN)_2 = 6.66\times 10^{20} atoms    

Number of carbon, C atoms in KAu(CN)_2 = 2\times6.66\times 10^{20} atoms = 13.32\times 10^{20}

Number of nitrogen, N atoms in KAu(CN)_2 = 2\times6.66\times 10^{20} atoms = 13.32\times 10^{20}

Total number of atoms in KAu(CN)_2 = Number of gold, Au atoms+Number of potassium, K atoms +Number of carbon, C atoms + Number of nitrogen, N atoms

Total number of atoms in KAu(CN)_2 = 6.66\times 10^{20}+6.66\times 10^{20}+13.32\times 10^{20}+13.32\times 10^{20}

Total number of atoms in KAu(CN)_2 = 39.96\times 10^{20} atoms

Hence, the total number of atoms in KAu(CN)_2 is 3.996\times 10^{21} atoms.

7 0
3 years ago
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