Ask question

Ask question

All categories

3 years ago

15

What properties of a substance determine how that substance will react when combined with other substances

1 answer:

Semmy [17]3 years ago

6 0

Answer:

Chemical Properties

Explanation:

Chemical properties are properties that are observed during chemical reactions. Some examples of chemical properties are reactivity, flammability and chemical stability.

You might be interested in

If an endothermic reaction occurs in solution, the temperature of the solution will

Ahat [919]

Answer:

increase

Explanation:

because in endothermic reaction heat is absorbed

4 0

3 years ago

Technetium (Tc; Z = 43) is a synthetic element used as a radioactive tracer in medical studies. A Tc atom emits a beta particle

Sedaia [141]

Question in incomplete, complete question is:

Technetium (Tc; Z = 43) is a synthetic element used as a radioactive tracer in medical studies. A Tc atom emits a beta particle (electron) with a kinetic energy (Ek) of $4.71\times 10^{-15}J$ . What is the de Broglie wavelength of this electron (Ek = ½mv²)?

Answer:

$6.762\times 10^{-12} m$ is the de Broglie wavelength of this electron.

Explanation:

To calculate the wavelength of a particle, we use the equation given by De-Broglie's wavelength, which is:

$\lambda=\frac{h}{\sqrt{2mE_k}}$

where,

= De-Broglie's wavelength = ?

h = Planck's constant = $6.624\times 10^{-34}Js$

m = mass of beta particle = $9.1094\times 10^{-31} kg$

$E_k$ = kinetic energy of the particle = $4.71\times 10^{-15}J$

Putting values in above equation, we get:

$\lambda =\frac{6.624\times 10^{-34}Js}{\sqrt{2\times 9.1094\times 10^{-31} kg\times 4.71\times 10^{-15}J}}$

$\lambda = 6.762\times 10^{-12} m$

$6.762\times 10^{-12} m$ is the de Broglie wavelength of this electron.

3 0

3 years ago

What is the mass of 0.251 moles of water? Using dimensional analysis show work

AVprozaik [17]

$1 \text{ mol of H}_2 \text{O} \equiv 18 \text{ g} \implies 0.251 \text{ moles of H}_2 \text{O} \equiv 4.518 \text{ g}$

3 0

3 years ago

When you find a new source of information, why is it important to think for yourself about whether to use that source?

dybincka [34]

Answer:

to make sure that the source is reliable.

Explanation:

because I am smart

7 0

3 years ago

50 POINTS AND BRAINLIEST PLEASE someone help me out with the highlighted answer. I don't understand it

Vlad [161]

Question: if heat is removed from the system how will the reactions shift to reach equilibrium again

Answer: lowering the temperature will make it shift to equilibrium

Explanation: A reaction that releases heat while you have a reaction that absorbs heat

question answered by

(jacemorris04)

7 0

3 years ago