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valentinak56 [21]
3 years ago
11

1000 divided by 392​

Chemistry
2 answers:
svp [43]3 years ago
7 0

Answer:

2.551020408163 and it keeps on going or 2 27⁄49

stealth61 [152]3 years ago
4 0

Answer:

Approximately 2.55

Explanation:

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If element A is in Group 2 and element B is in Group 17, what will be the formula if they bond together?
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Answer:

AB

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When combining two elements in different groups, you would just put them together unless you have two or more of each element

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Which of the following will allow measurement of a liquids volume with the greatest precision ?​
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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

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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

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Using,

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

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

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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>

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