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irinina [24]
3 years ago
6

Fill in the blank: in space, astronauts experience ________ which is the apparent loss of weight of an object that is falling in

gravitational field.
Chemistry
1 answer:
jeka57 [31]3 years ago
3 0
Astronauts experience weightlessness which is the apparent loss of weight of an object that is falling in gravitational field
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A block of wood has a volume of 64 cm3 and a mass of 46 grams. What is the density of the block?
Rom4ik [11]

The correct answer is 0.72 g/cm3

Explanation:

The density of a material depends on both its mass (amount of matter), which is usually provided in grams (g), and its volume (space occupied), which is provided in units such as cubic centimeters cm3. Moreover, to find how dense the material is, take the mass and divide it into the volume. The process for finding the density of the block of wood is shown below:

d = \frac{m}{v}

d = \frac{46 g}{64 cm3}

d = 0.718 g/cm3

This means the density is 0.71g/cm3 and this can be rounded to 0.72 g/cm3

3 0
3 years ago
What is an oxidation reaction? ​
kow [346]
<h3>Definition:</h3>
  • A reaction when an atom or compound loses one or more electrons.

  • It is a reaction is a type of chemical reaction that involves a transfer of electrons between two species.

  • Oxidation is gain of oxygen

<h3>For Example:</h3>

Fe + O2 —(H2O)—> Fe2O3

7 0
3 years ago
________ climate is summerless with the average temperature of the warmest month below 10°c.
amid [387]

Answer:

Polar

Explanation:

A polar climate is a place where the climate usually has a temperature below freezing, icy, and covered in snow. These areas do not get direct heat and sunlight from the sun. Polar climates are located at the North Pole of the Arctic, and at the South Pole on the continent of Antarctica.

8 0
1 year ago
Sue dissolved a certain amount of salt in 400 grams of water to obtain 405 grams of salt solution. What was the mass of the salt
svp [43]
The answer would be 5 grams of salt
6 0
3 years ago
Read 2 more answers
The graphics below shows how photosynthesis and cellular respiration are related.
lisov135 [29]

Options found from another source are:

a. oxygen. b. glucose. c. energy stored as ATP. d. carbon dioxide and water

Answer:

c energy stored as ATP

Explanation:

Cellular respiration converts glucose into energy in the form of ATP (c). The answer cannot be oxygen (a), because this is required for this process as a final electron acceptor. In terms of photosynthesis, oxygen is released as a by-product. The answer cannot be glucose (b) because that is our starting point for respiration, and what is synthesised during photosynthesis. The answer cannot be (d) as carbon dioxide and water are released by cellular respiration, and required by photosynthesis

8 0
3 years ago
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