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Oksana_A [137]
3 years ago
8

Describe one way in which advances in space technology have improved our understanding of objects in space.

Chemistry
1 answer:
Anika [276]3 years ago
7 0

Answer:

Technology helps us in many ways.

Explanation:

We can now research the world even more effectively and at a higher level of sophistication thanks to technological advancements. Telescopes, on the other hand, enable us to peer into the far corners of the universe and detect very large objects such as stars. Electron microscope enable us to see smaller objects such as cells and organisms.

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If 33.9g NaCl are mixed into water and the total mass is 578g, what is the CHANGE in freezing if Kb= - 1.82C/M (molal)? Assume N
steposvetlana [31]

Answer:

-1.82 °C

Explanation:

Step 1: Given data

  • Mass of NaCl (solute): 33.9 g
  • Mass of water (solvent): 578 g = 0.578 kg
  • Freezing point depression constant for water (Kb): -1.82 °C/m

Step 2: Calculate the molality of the solution

We will use the following expression.

m = mass of solute / molar mass of solute × kg of solvent

m = 33.9 g / 58.44 g/mol × 0.578 kg

m = 1.00 m

Step 3: Calculate the freezing point depression (ΔT)

The freezing point depression is a colligative property that, for a non-dissociated solute, can be calculated using the following expression:

ΔT = Kb × m

ΔT = -1.82 °C/m × 1.00 m

ΔT = -1.82 °C

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3 years ago
The density of human blood is 1.06g/ml the volume is 5.5l what is the mass in kg
kondor19780726 [428]

The mass of the blood is 5.8 kg.

<em>V</em> = 5.5 L = 5500 mL

Mass = 5500 mL × (1.06 g/1 mL) = 5800 g = 5.8 kg

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D) Vernal and autumnal equinoxes.

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Which part of the mantle is still a solid but flows thick , heavy liquid? A.asthensosphere B.crust C.core D.lithosphere
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