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3 years ago

sodium hydrogen carbonate is heated after heating which substance is form??? and what is the colour of the substance

1 answer:

7 0

When it is heated above about 80°C it begins to break down, forming sodium carbonate, water and carbon dioxide. The color is white.

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A 1,350-Kg car travels at 12 <br> M/s. What is its kinetic energy??

polet [3.4K]

Answer:

The kinetic energy of the car will be 97.2.

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3 years ago

How many moles of o2 are needed for the complete combustion of glucose?

PSYCHO15rus [73]

C6H12O6(s) + 9 O2(g)
-> 6 CO2(g) + 6 H2O(g)

There are 9 moles of O2 needed for the complete combustion of glucose.

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4 years ago

The volume of a sample of hydrogen gas was decreased from 14.65 L to 7.94 L at constant temperature. If the final pressure exert

adoni [48]

Answer:

The pressure the hydrogen gas exerted before its volume was decreased is 2.7207 atm.

Explanation:

Using Boyle's law

${P_1}\times {V_1}={P_2}\times {V_2}$

Given ,

V₁ = 14.65 L

V₂ = 7.94 L

P₁ = ?

P₂ = 5.02 atm

Using above equation as:

${P_1}\times {V_1}={P_2}\times {V_2}$

${P_1}\times {14.65}={5.02}\times {7.94}\ atm$

${P_1}=\frac {{5.02}\times {7.94}}{14.65}\ atm$

${P_1}=2.7207\ atm$

<u>The pressure the hydrogen gas exerted before its volume was decreased is 2.7207 atm.</u>

8 0

3 years ago

Eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

goldenfox [79]

Answer is:

either A, or D

Explanation:

4 0

3 years ago

Which of the following is a characteristic of mixtures? A. Mixtures can only be in solid and liquid form. B. Substances that are

Taya2010 [7]

The correct choice is B.

Mixtures retain their properties because science has proven it. Take a bag of trail mix for example. Those raisins and marshmallows and m&m’s can each be separated. When you take them out, they keep their same texture.

Is not correct because mixtures can be solids (Trail mix is one example)

Correct

Is not correct because sometimes it cannot be seen (Lemonade powder and water is one example)

Is not correct because trail mix is an example.

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4 years ago

sodium hydrogen carbonate is heated after heating which substance is form???​ and what is the colour of the substance

sodium hydrogen carbonate is heated after heating which substance is form??? and what is the colour of the substance