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Bingel [31]
4 years ago
5

What is not indicated by a reaction rate?

Chemistry
1 answer:
inna [77]4 years ago
3 0

The answer is C. The speed at which Calories are consumed is not indicated by a reaction rate, rather it is indicated by what you do in a day.

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Complete the blank with the correct answer choice. 3 meters = ________ millimeters A. 30 B. 300 C. 3,000 D. 30,000
Nata [24]
Answer : C.

3 meters=3000 millimeters
8 0
3 years ago
n unknown metal is either aluminum, iron or lead. If 150. g of this metal at 150.0 °C was placed in a calorimeter that contains
Nitella [24]

Answer : The metal used was iron (the specific heat capacity is 0.449J/g^oC).

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

q_1=-q_2

m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)

where,

c_1 = specific heat of unknown metal = ?

c_2 = specific heat of water = 4.184J/g^oC

m_1 = mass of unknown metal = 150 g

m_2 = mass of water = 200 g

T_f = final temperature of water = 34.3^oC

T_1 = initial temperature of unknown metal = 150.0^oC

T_2 = initial temperature of water = 25.0^oC

Now put all the given values in the above formula, we get

150g\times c_1\times (34.3-150.0)^oC=-200g\times 4.184J/g^oC\times (34.3-25.0)^oC

c_1=0.449J/g^oC

Form the value of specific heat of unknown metal, we conclude that the metal used in this was iron (Fe).

Therefore, the metal used was iron (the specific heat capacity is 0.449J/g^oC).

6 0
4 years ago
How many grams of sodium metal are needed to react completely with 25.8 liters of chlorine gas at 293 Kelvin and 1.30 atmosphere
Kitty [74]

I think it takes about 278g but I'm not 100% sure


5 0
3 years ago
Why does a 10 ton block of steal sink to the bottom of the ocean but a 10 ton boat made of the exact same steel float?
Alchen [17]
The boat is flattened and there is more air against the surface pushing it up but a block has all weight in one place and will just sink<span />
8 0
3 years ago
Please help me I would apprecitated
allsm [11]
Answer
1.5 miles per hour

hope this helps and have a wonderful day :)
3 0
3 years ago
Read 2 more answers
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