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Montano1993 [528]
3 years ago
6

Can someone help me with 1 to 8 ? I will mark you Brainliest.

Chemistry
1 answer:
lord [1]3 years ago
8 0

Answer:

1. scientist

2. society

3. We can communicate to people across the world in a fraction of a second, our grandparents would've had to pay an extra fee to call anyone outside of the country. We've also made progress in medicine, making diseases like cancer more treatable.

4. Passion, determination, and intelligence.

5. You could ask yourself what factors do the other trees have that the unhealthy tree not have and then create an experiment as to how the variable missing from the unhealthy tree affects plants.

6. Life science was affected by each of these branches.

7. Investigations take a long time because of observations, forming hypothesis, creating an experiment and analyzing the data and then revizing the experiment and the hypothesis. This can take years and cannot be limited to one year.

8. The contributions of these scientists are absolutely still valuable, without these contributions many of the things we know in the modern world wouldn't be known today. Such as the types of organelles and their functions, the periodic table, and the importance of oxygen for human beings.

Explanation:

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Which metal ions can be precipitated out of solution as chlorides?a. Ag+, Hg2+, Co2+b. Cu2+, Cd2+, Bi3+ c. Ag+, Hg22+, Pb2+ d. N
Fudgin [204]

Answer:

Explanation:

In the qualitative analysis of metal salts , we see that in group I , metal chlorides are precipitated out . It is so because their metal chlorides are insoluble in water  .

In this group following metal ions are present

Ag+,

Hg₂²⁺

Pb²⁺

8 0
2 years ago
What are the layers of the Earth
max2010maxim [7]

<em>Hello! Here is your answer!</em>

<u><em /></u>

<u><em>Crust, Upper Mantle, Lower Mantle, Outer Core</em></u>

<u><em /></u>

<em>I hope this helped if it did please mark brainlist!</em>

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4 0
2 years ago
Read 2 more answers
2HgCl2(aq) + C2O42–(aq) → 2Cl–(aq) +2CO2(g) + Hg2Cl2(s)
alexgriva [62]

Explanation:

Expression for rate of the given reaction is as follows.

             Rate = k[HgCl_{2}]x [C_{2}O^{2-}_{4}]y[/tex]

Therefore, the reaction equations by putting the given values will be as follows.

       1.8 \times 10^{-5} = k[0.105]x [0.15]y ............. (1)

       7.2 \times 10^{-5} = k [0.105]x [0.30]y ........... (2)

       3.6 \times 10^{-5} = k [0.0525]x [0.30]y ............ (3)

Now, solving equations (1) and (2) we get the value of y = 2. Therefore, by solving equation (2) and (3)  we get the value of x = 1.

Therefore, expression for rate of the reaction is as follows.

     Rate = k[HgCl_{2}]x [C_{2}O^{2-}_{4}]y

          Rate = k [HgCl2]1 [C_{2}O^{-2}_{4}]2

Hence, total order = 1 + 2 = 3

According to equation (1),

               1.8 \times 10^{-5} = k[0.105]x [0.15]y  

            1.8 \times 10^{-5} = k [0.105]1 [0.15]2  

                      k = 7.6 \times 10^{-3} M^{-2} min^{-1}  

Thus, we can conclude that rate constant for the given reaction is 7.6 \times 10^{-3} M^{-2} min^{-1}.

8 0
2 years ago
Barium chlorate (Ba(ClO3)2) breaks down to form barium chloride and oxygen. What is the balanced equation for this reaction?
Scrat [10]
Ba(ClO₃)₂ ----> BaCl₂ + 3O₂

:)
6 0
3 years ago
Read 2 more answers
8. Which type of water reservoir could always provide fresh water?
Delicious77 [7]
D: tropical seas hope this helped
4 0
3 years ago
Read 2 more answers
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