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Vikki [24]
3 years ago
9

In the simple act of lighting a match, chemical energy stored in the match head is transformed into heat and light. What is true

about this energy transformation?
Chemistry
2 answers:
Alexxandr [17]3 years ago
6 0

Striking the match would be mechanical energy, once the match is lit it would produce thermal energy which is what you would feel as heat and electromagnetic which would be seen as light.

harina [27]3 years ago
5 0

The head of a matchstick has a great deal of chemical energy stored in it, including combustible substances that produce a flame when rubbed against a suitable surface. ... As the combustible materials burn, some of the chemical energy is transformed into heat energy, and some is transformed into light energy. Hope this helps

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What is the formula for the compound by calcium ions and chloride ions?
dimaraw [331]
To find the ratio of the the combination for the ion, write the charge of the cation as the subscript for the anion, and the charge of the anion as the subscript of the cation. This will make the charges effectively cancel and you will be left with a neutral ionic compound. Remember, that an ionic compound is made up of a metal and a nonmetal.
For Ca2+ and Cl-, you will get the neutral compound to be CaCl₂.
8 0
4 years ago
Consider two gases, A and B, are in a container at room temperature. What effect will the following changes have on the rate of
Tcecarenko [31]

Answer:

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6 0
2 years ago
What is the mass of a sample of water that takes 2000 kJ of energy to boil into steam at 373 K. The latent heat of vaporization
zzz [600]

Answer:

\boxed{\text{889 g}}

Explanation:

The formula relating the mass m of a sample and the heat q to vaporize it is

q = mL, where L is the latent heat of vaporization.

\begin{array}{rcl}2000 \times 10^{3} \text{ J} & = & m \times \dfrac{2.25 \times 10^{6} \text{ J}}{\text{1 kg}}\\\\m & = & \dfrac{2000 \times \times 10^{3}\text{ kg}}{2.25 \times 10^{6}}\\ & = & \text{0.889 kg}\\\\ & = & \text{889 g}\\\end{array}\\\text{The mass of water is $\boxed{\textbf{889 g}}$}

5 0
3 years ago
(02.01 MC)
Rina8888 [55]

Answer:

C. Particle size

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The sand, which has smaller particles, will go through the sieve, while the rice (with a larger particle size) will not

4 0
3 years ago
Hey need help. this is ONE question a 4 part one though. pls help
shusha [124]
I don’t get it. What is the question asking?
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3 years ago
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