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schepotkina [342]
4 years ago
8

The formula C2H4 can be classified as

Chemistry
2 answers:
blsea [12.9K]4 years ago
7 0

The formula C2H4 can be classified as both a molecular formula and an empirical formula. The answer is number 4.

kicyunya [14]4 years ago
4 0
It is a molecular formula for ethene and an empirical formula for an organic compound higher than it by -CH2.
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If a gas is cooled from 325K to 275K and the volume is constant, what would the final pressure be if it was originally 750mmHg?
salantis [7]

Answer:

635

p/T is a constant

(750/325)×275

3 0
4 years ago
Consider the following specific heats: copper, 0.384 J/g· °C; lead, 0.159 J/g· °C; water, 4.18 J/g· °C; glass, 0.502 J/g· °C. Wh
Reil [10]

Answer:

3. water

Explanation:

Specific Heat: Specific heat of a substance is the energy required to increase temperature of 1 gram of substance by 1°C

Here water has the highest specific heat in the list,so it emit largest amount of heat with lose of small amount of temperature.

So,water can warmed body until its temperature becomes below the body temperature.

5 0
3 years ago
Write the mechanism of the reaction of methyl benzoate to form methyl 2-nitrobenzoate.
Igoryamba
The question is incorrect, nitration of methylbenzoate occurs at 3 position to get, methyl 3-nitrobenzoate. 

This is because, in present reaction the reactant i.e. methylbenzoate, has low electron density at m-position.

Due to this, NO2+ prefentially attaches m-position to form  methyl 3-nitro benzoate as the product. 

A detailed reaction mechanism for formation of product is provided below.

3 0
4 years ago
I need help please this is due today
jonny [76]
Option B is correct. Average speed can be found through the equation speed = distance/time. Applying this to each person using the data in the chart:

Dennis’ speed: 60 ft/0.5 secs = 120 ft per sec

Johnny’s speed: 60 ft/0.45 secs = 133.333 ft per sec

Travis’ speed: 60 ft/0.52 secs = 115.38 ft per sec

Michael’s speed: 60 ft/0.48 secs = 125 ft per sec

As you can see, Johnny’s speed is the fastest at 133.333 ft/sec.

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
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