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astraxan [27]
3 years ago
13

Which organ is NOT a part of the excretory system? *

Chemistry
2 answers:
Ierofanga [76]3 years ago
5 0

Answer:

brain

Explanation:

pishuonlain [190]3 years ago
3 0

Answer:

D. BRAIN

Explanation:

The human excretory system includes the lungs, the skin, and the urinary system (kidneys, ureters, bladder, and urethra).

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The first known telescopes, used around 1600, consisted of a lens and an eyepiece. Today, telescopes are often computer controll
Veseljchak [2.6K]

Answer:

B.

Explanation:

The telescopes of the 1600s were gradually improved upon over time, resulting in the telescopes that are available today.

4 0
3 years ago
explain why some metal occur as free element in nature, why other occur in combined states. give two examples of each type
MaRussiya [10]

Explanation:

Thus, those metals which remain unaffected by moisture, oxygen and carbon dioxide of the air can occur native or free. In other words, the unreactive metals occur in nature in free state because of their low reactivity towards chemical reagents. ... Metals usually occur in combination with nonmetallic elements.

3 0
2 years ago
Group VII corresponds to the...
SCORPION-xisa [38]

Answer:

Halogens family

Explanation:

Be familiar with the periodic table

5 0
3 years ago
Read 2 more answers
A sample of food containing 27 g of fat, 48 g of carbohydrates and 20 g of protein is burned in a bomb calorimeter. In a perfect
rosijanka [135]

Answer:

38.3958 °C  

Explanation:

As,

1 gram of carbohydrates on burning gives 4 kilocalories  of energy

1 gram of protein on burning gives 4 kilocalories  of energy

1 gram of fat on burning gives 9 kilocalories of energy

Thus,

27 g of fat on burning gives 9*27 = 243 kilocalories of energy

20 g of protein on burning gives 4*20 = 80 kilocalories  of energy

48 gram of carbohydrates on burning gives 4*48 = 192 kilocalories  of energy

Total energy = 515 kilocalories

Using,

Q=m_{water}\times C_{water}\times (T_f-T_i)

Given: Volume of water = 23 L = 23×10⁻³ m³

Density=\frac{Mass}{Volume}  

Density of water= 1000 kg/m³

So, mass of the water:  

Mass\ of\ water=Density \times {Volume\ of\ water}  

Mass\ of\ water=1000 kg/m^3 \times {0.023\ m^3}  

Mass of water  = 23 kg

Initial temperature = 16°C  

Specific heat of water = 0.9998 kcal/kg°C  

515=23\times 0.9998\times (T_f-16)

Solving for final temperature as:

<u>Final temperature = 38.3958 °C  </u>

8 0
3 years ago
Do all atoms only have one oxidation state​
MA_775_DIABLO [31]
I believe so! If not tell me So I can delete this
4 0
3 years ago
Read 2 more answers
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