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nydimaria [60]
3 years ago
6

PLEASE HELP ME NO LINKS

Chemistry
2 answers:
jarptica [38.1K]3 years ago
7 0
The answer is B maybe and no links
Y_Kistochka [10]3 years ago
3 0

Answer: I don’t think the answer is A or C. Maybe B.

The word chemosynthesis means

the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.

Explanation:

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How much solar radiation is reflected back by clouds?
Tcecarenko [31]

Answer:

It is about 30 percent of the solar radiation that is reflected back by the clouds. Normally 24 to 25 percent of solar radiation is reflected back. The earth's surface reflects back about 4% of the solar radiation. Around 7 percent of solar radiation is scattered back to space by the particles in the atmosphere.

4 0
3 years ago
How much mass does 0.5 mole of barium contain?
ella [17]

Answer:

137.327

Explanation:

8 0
3 years ago
25 POINTS <br> Part C<br> Record what you observe in these images showing the banks of the Dead Sea.
NikAS [45]

One of the most significant characteristics of the Dead Sea is its salinity level. The images show the rock salt deposits on the shore.

<h3>What are the characteristics of the characteristics of the Dead sea?</h3>

  • Location

The dead dea is the most salty landlocked lake on the Earth surface. It is located in the middle East, between Israel and Jordania. Its nort-south length is about 80 km and its east-west wide varies between 7 and 20 km.

  • Afluent

The Jordan river is the most significan afluent on the Dead Sea, from which it receives most of its water.

  • Water level

The Dead Sea is the deepest and lowest water body on the Earth, being its surface level 400 mt below the sea level.

Due to different reasons, during the last decades, there was a sharp and continuous drop in the water level. For this reason the lake surface is decreasing year after year.

  • Salinity

Among its many characteristics, one of them -and probably the most notorious one- is the salinity.  The percentage of dissolved salts in the lake is much higher than the one recorded in the oceans, seas or lakes of the globe. Its value is between 8 and 10 times higher the salt level of oceans.

The salts present in the lake are chlorine, magnesium, sodium, calcium, potassium, bromine and sulfur. Their concentration vary according to the strate and deph, but it tends to increase toward the lake’s bottom. The high salinity level provides an oily aspect, bleach taste, and extreme density.

Several rock salt deposits can be seen on the shore and near it. Salt columns can also be seen in deepest areas. These structures are becomming more common with time, as water evaporates, water provision from afluent sources decreases, and salinity near the surface increases.

  • Forms of life

Mainly due to the extreme salt level, which turns to be lethal, almost no forms of life inhabit these waters. Only some bacteria species and one algae species can be found in the water, and some plant species near the coasts.

What we can observe in these images are the rock salt deposits on the shore.

You can learn more about the Dead Sea at

brainly.com/question/11851245

brainly.com/question/26055281

8 0
2 years ago
Gold cylinder has a mass of 75 g and a specific heat of 0.129J/G degrees Celsius it is heated to 65°C and then put in 500 g of w
nadezda [96]
<h3>Answer:</h3>

89.88° C

<h3>Explanation:</h3>

<u>We are given;</u>

  • Mass of gold cylinder as 75 g
  • specific heat of gold is 0.129 J/g°C
  • Initial temperature of gold cylinder is 65°C
  • Mass of water is 500 g
  • Initial temperature of water is 90 °C

We are required to calculate the final temperature;

  • We know that Quantity of heat is given by the product of mass, specific heat capacity and change in temperature.
  • That is, Q = m × c × ΔT
<h3>Step 1: Calculate the quantity of heat absorbed by the Gold cylinder</h3>

Assuming the final temperature is X° C

Then; ΔT = (X-65)°C

Therefore;

Q = 75 g × 0.129 J/g°C × (X-65)°C

   = 9.675X - 628.875 Joules

<h3>Step 2: Calculate the quantity of heat released by water</h3>

Taking the final temperature as X° C

Change in temperature, ΔT = (90 - X)° C

Specific heat capacity of water is 4.184 J/g°C

Therefore;

Q = 500 g × 4.184 J/g°C × (90 - X)° C

  = 188,280 -2092X joules

<h3>Step 3: Calculate the final temperature, X°C</h3>

we know that the heat gained by gold cylinder is equal to the heat released by water.

9.675X - 628.875 Joules = 188,280 -2092X joules

2101.675 X = 188908.875

              X = 89.88° C

Thus, the final temperature is 89.88° C

3 0
3 years ago
Helppppp plzzz for 30 points
MrRissso [65]

Answer with Explanation:

This is expirament based Q

1) Bring a magnet near ... the Cobalt will come out of te mixture and get attracted to magnet

2)  Disolve it in a solution of ethanol. The Idoine gets dissolve and the other doesnt.

Hope im right!!

5 0
3 years ago
Read 2 more answers
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