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2 years ago

Sofia is doing a presentation on the history of blood analysis. Who is she MOST likely to mention in her presentation?

Chemistry

1 answer:

N76 [4]2 years ago

3 0

Answer:

A. Karl Landsteiner is the most likely for her to mention.

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The climate of a place also depends upon the amount of water in the air. How do the rising temperatures around Earth affect the

kodGreya [7K]

Answer:

B) There is more water in the air because the rate of evaporation increases

Explanation:

As the temperatures rise across the globe, the rate of evaporation also increases, resulting in more water in the air. The reason for the increased evaporation is that the ice sheets and glaciers are melting, thus there's more liquid water. The more liquid water there is, the more evaporation there will be. As the evaporation increases, there will be an increase in the formation of clouds, thus there will be more precipitation around the world, gradually leading to warmer and wetter climate.

5 0

4 years ago

What does squeezing do to the particles of snow or ice?

3241004551 [841]

Answer:

crushes the ice to compaction and satasfation

3 0

3 years ago

Read 2 more answers

Write a net ionic equation for the reaction that occurs when excess hydroiodic acid and nickel(II) sulfide are combined.

tiny-mole [99]

Explanation:

Step 1: Write the balanced "molecular" equation:

$2HI(aq) + NIS (s) → NiI₂(aq) + H₂S(g)$

Step 2: H₂S is written in molecular form. Consult the solubility and net ionic equation rules on the information page to determine which of the other substances will dissociate:

$2HI(aq) + NIS (s) → NiI₂(aq) + H₂S(g)$

yes no yes

Step 3: Dissociate all soluble salts, strong acids, and strong bases (except calcium hydroxide). Leave together all "not soluble" salts and weak acids or bases:

${2H₃O}^{ + } (aq) + {2I}^{ - } (aq) + NiS(s)→ { Ni}^{2 + }(aq) + {2I}^{ - }(aq) + H₂S(g) + 2H₂O(l)$

Step 4: Cross out "spectator ions" that appear on both sides of the reaction (these ions do not participate in the chemistry) and rewrite the "net" reaction using the smallest possible coefficients:

${2H₃O}^{ + } (aq) + NiS(s) → { Ni}^{2 + } (aq) + H₂S(g) + 2H₂O(l)$

4 0

3 years ago

Considering the combustion reaction of propane again, what mass of propane (C3Hg) is necessary to react with 4.53 g of oxygen? C

zimovet [89]

Answer:

1.25 g C3H8

Explanation:

edge lol

7 0

2 years ago

3. The molar volume of a gas at STP occupies 0 1 kilopascal O ooc 12 grams 22.4 L

Reil [10]

The molar volume of a gas at STP occupies 22.4 L.

Option D

Explanation:

To find the volume of 1 mole of a gas at STP, we use the Ideal Gas Law. It is the general gas equation which gives the relation to the measurable quantities to an ideal gas as below,

P (pressure) × V (volume) = n (number of moles) × R (the gas constant) × T (temperature in Kelvin)

STP = 1 atm of pressure and 273 K for temperature

P = 1 atm

V = ?

n = 1 mole

R = 0.0821 atm L/mol K

T = 273 K

Using the equation,

$\mathrm{PV}=\mathrm{nRT}$

$V=\frac{n R T}{P}$

By substituting the above values, in the equation,

$V=\frac{1 \times 0.082 \times 273}{1}=22.38\ L$

V = 22.38 L

8 0

3 years ago