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nordsb [41]
3 years ago
10

Check the boxes next to events or trends that first occurred in science from about 1700. Darwin published his theory of natural

selection. Archimedes described the principle of the lever. Scientific societies and academies were formed. The double-helix structure of DNA was determined. Copernicus proposed a Sun-centered universe. Continental drift was explained by the theory of plate tectonics. The Earth was proven to be spherical.
Chemistry
2 answers:
pantera1 [17]3 years ago
8 0

Darwin published his theory of natural selection

Scientific societies and academies were formed.

The double-helix structure of DNA was determined.

Continental drift was explained by the theory of plate tectonics

got it right

marishachu [46]3 years ago
4 0

Check the boxes next to events or trends that first occurred in science from about 1700.

X Darwin published his theory of natural selection.

-Darwin published his work in 1859.

X Archimedes described the principle of the lever.

-Archimedes discovered this during the third century BC (300-201 BC)

/ Scientific societies and academies were formed.

-These were formed around 1789

X The double-helix structure of DNA was determined.

<span> -IT was discovered in 1953 by James Watson and Francis Crick.</span>

X Copernicus proposed a Sun-centered universe.

<span>-It was proposed in the 16th century.</span>

X Continental drift was explained by the theory of plate tectonics.

<span> -It was proposed at around 1910 till 1950 but was accepted at 1960. </span>

X The Earth was proven to be spherical.

-It was argued at around 384-322 BC.

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Monica [59]

Answer:

2 moles N2⋅3 moles H21 Mole N2=6 moles H2

Explanation:

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3 years ago
Question 1. Considering the reaction of the decomposition of N2O5 to form the products NO2 and O2, calculate the average reactio
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 </span><span> average reaction rate </span><span>= change in concentration / change in time
by putting values we have

 = (1.00M - 0.987M) / (4.00s - 0.00s)
 = 3.25x10^-3 mol/Lsec
this is our conclusion
hope this helps</span>
7 0
3 years ago
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HELP THIS IS SCIENCE I HAVING TROUBLE
muminat

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1/2 of the way down

Explanation:

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3 years ago
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Investigations were carried out in a science lab to explore the topic of chemical and physical changes. Investigation A Step 1.
ozzi

Answer:

Investigation B, Step 2

Explanation:

The <em>colour change</em> is a good indication of a <em>chemical change</em>. The sugar molecules were most likely changing into something else.

Investigation A, Step 1. <em>Wron</em>g. The dissolving of salt is a <em>physica</em>l process.

Investigation A, Step 2. <em>Wrong</em>. You simply boiled off the water (a <em>physical</em> process) and recovered the salt.

Investigation B, Step 1. <em>Wrong</em>. The dissolving of sugar is a <em>physical</em> process.

4 0
3 years ago
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A 15.0 ml sample of gas at 10.0 degree Celsius and 760 torr changes to a pressure of 1252 torr at 35.0 degree Celsius. What is t
netineya [11]

Answer:

9.91 mL

Explanation:

Using the combined gas law equation as follows;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (torr)

P2 = final pressure (torr)

V1 = initial volume (mL)

V2 = final volume (mL)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question;

V1 = 15.0mL

V2 = ?

P1 = 760 torr

P2 = 1252 torr

T1 = 10°C = 10 + 273 = 283K

T2 = 35°C = 35 + 273 = 308K

Using P1V1/T1 = P2V2/T2

760 × 15/283 = 1252 × V2/308

11400/283 = 1252V2/308

Cross multiply

11400 × 308 = 283 × 1252V2

3511200 = 354316V2

V2 = 3511200 ÷ 354316

V2 = 9.91 mL

4 0
3 years ago
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