Thus, there are 1.47 × 10^(23) molecules present in 122 grams of NO2.
A. LITTORAL ZONE is a freshwater ecosystem that is home to rooted plants.
Littoral zone is the shallow area of a lake, pond, river or ocean. This is the area where mangroves grow.
Some counties and water district identify littoral zones so that these zone will be planted with native plants. This is done for the purpose of having the plants purify the water and maintain a balanced ecosystems.
The simplest way of separating visible solid impurities that do not dissolve in water from water is by using a sieve (option A).
<h3>What is sieving?</h3>
Sieving is a act of passing substances through a sieve, which is a device with a mesh bottom to separate, in a granular material, larger particles from smaller ones, or to separate solid objects from a liquid.
Sieving is a physical method of separation widely used to separate substances that cannot dissolve in a liquid from that liquid.
Therefore, the simplest way of separating visible solid impurities that do not dissolve in water from water is by using a sieve.
Learn more about sieving at: brainly.com/question/2760394
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Answer:
A and c because the temperature is not constant. As we can see in the chart the temp. goes to 0 (ice melts) then goes to 100 (water evaporates).
Answer:
The mass of the water in the container is 139.187g
Explanation:
During this process there will not be lost heat. But heat lost of silver is equal to heat won of water
q(lost, silver) = q(gained, water)
-mass * Cpsilver * (T2-T1) = mass * Cpwater * (T2-T1)
⇒mass of silver = 63.3g
⇒Cpsilver = 0.24J/g °C
⇒initial temperature silver = 384.4 K
⇒ final temperature silver = 292.4 K
⇒mass of water = TO BE DETERMINED
⇒Cpwater = 4.184 J/g °C
⇒initial temperature water = 290.0 K
⇒final temperature = 292.4 K
-mass * Cpsilver * (T2-T1) = mass * Cpwater * (T2-T1)
-63.3 * 0.24 * (292.4-384.4) = mass * 4.184 * (292.4 - 290.0)
-1397.664 = mass * 0.24 *2.4
mass water = 139.187g
The mass of the water in the container is 139.187g
