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kherson [118]
3 years ago
10

In this reaction of methane, CH4, 1664k) of energy are taken in , per mole of methane

Chemistry
1 answer:
anyanavicka [17]3 years ago
6 0

Answer:

it is endothermic because it doesn't affect the glass used

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A piece of gold ingot with a mass of 301 g has a volume of 15.6 cm3 . calculate the density of gold.
Fantom [35]

Answer:

            19.29 g.cm⁻³

Solution:

Data Given:

                             Mass  =  301 g

                             Volume  =  15.6 cm³

Formula Used:

                             Density  =  Mass ÷ Volume

Putting values,

                             Density  =  301 g ÷ 15.6 cm³

                            Density  =  19.29 g.cm⁻³

6 0
3 years ago
Can waves travel through empty space? why?
jok3333 [9.3K]

Answer:

Elctromagnetic waves can travel through empty space.

Explanation:

Waves that may pass through matter or empty space are known as electromagnetic waves. The electromagnetic field, like the other basic fields, penetrates the whole universe, including the region we refer to as empty space. There are no fields in space. The medium through which electromagnetic waves travel is called the electromagnetic field.

         

3 0
2 years ago
The symbol equation for combustion of a hydrocarbon is shown below. What number should go before the water product in order to b
almond37 [142]

Answer:

4

Explanation:

Since there are 3 carbons on the left side, make the coefficient of CO2 equal to 3.

Also, since there are 8 hydrogen on the left side, make the coefficient of H2O equal to 4.

This means there are 3(2)+4=10 oxygen atoms on the right, making the coefficient of O2 equal to 5.

5 0
3 years ago
How do I convert 50 years into seconds. Express your answer in scientific notation?
ludmilkaskok [199]

Answer: 15768 seconds

Explanation:            (50 years) x (365 da/yr) x (86,400 sec/da)

        =      (50 x 365 x 86,400)  seconds

        =        1.5768 x 10⁹ seconds

8 0
3 years ago
Can someone please answer question (ii), I thank.
aleksley [76]
The lime water would become cloudy :)
6 0
3 years ago
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