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Anna71 [15]
3 years ago
15

Any collection of things that have some influence on one another can be thought of as a system. When we talk about a system, we

are also talking about all the parts that should be included, how those parts interact with one another, and to how the system as a whole relates to other systems. Consider the water cycle on Earth. Scientists have hypothesized about how climate change, specifically global warming, could impact the water cycle and therefore life on Earth. Scientists might consider specific research questions regarding this topic. They would include which questions listed above? A) I and II B) I, II, IV C) I and III D) I, II, III, IV
Chemistry
1 answer:
schepotkina [342]3 years ago
3 0

Answer:

d

Explanation:

d sound =s the back

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Write the balanced COMPLETE ionic equation for the reaction when Na₂CO₃ and AgNO₃ are mixed in aqueous solution. If no reaction
alexdok [17]

Answer:

see explanation

Explanation:

Write the balanced COMPLETE ionic equation for the reaction when Na₂CO₃ and AgNO₃ are mixed in aqueous solution. If no reaction occurs, simply write only NR.

Ag (+1) + NO3(-1) + 2 Na(+1) + Co3 (-2)--> Ag2CO3 (s) + 2 Na (+1) + 2NO3(-1)

8 0
2 years ago
Which element is less electronegative than silicon (Si)? A. Sulfur (S) B. Magnesium (Mg) C. Carbon (C) D. Oxygen (0)​
Luden [163]

Answer:

C. Carbon

Explanation:

Carbon has an electronegativity of 2.55, followed by Tin at 1.96, Silicon at 1.90 and the least electronegative would be Lead at 1.87.

7 0
3 years ago
At a certain temperature the rate of this reaction is second order in NH4OH with a rate constant of 34.1 M^-1s^-1: Suppose a ves
Tom [10]

Answer:

Time = 0.929s = 0.93s (2 s.f)

Explanation:

Rate constant, k = 34.1 M^-1s^-1

Initial Concentration, [A]o = 0.100M

Time = ?

Final Concentration [A] = 0.0240M

The parameters are represented in the following equation as;

1/[A] = kt + 1/[A]o

kt = 1/[A]  -  1/[A]o

kt = 1/0.0240 - 1/0.1

kt = 31.67

t = 31.67 / 34.1

t = 0.929s = 0.93s (2 s.f)

5 0
3 years ago
Help please I’m confused
Debora [2.8K]

Answer:1 answer number 1

Explanation:

5 0
3 years ago
Balance the equation and identify the type of reaction for ? p4(s) + ? ca(s) → ? ca3p2(s).
Kazeer [188]
There are different kinds of reactions. To name some, these are the synthesis reaction, decomposition reaction, single-replacement reaction, double-replacement reaction, combustion reaction, redox reaction, etc. For this type of reaction involving two reactants to yield only one product, <em>this is a synthesis reaction.</em>

<em>P₄ (s) + 6 Ca (s) --> 2 Ca₃P₂ (s)</em>
3 0
3 years ago
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