Ask question

Ask question

All categories

3 years ago

7

Help pls i give 20 points

1 answer:

Sveta_85 [38]3 years ago

6 0

1. Physical- it is just changing states it’s still gold.
2. Chemical - oxidation is occurring which is a chemical change
3.chemical- when metal rusts it changes into iron oxide which is different than regular iron.

I’m not sure about the other 3. Sorry :( but I hope this kind of helps

You might be interested in

I NEED HELPP ASAP!!!!!!

alexdok [17]

1. transformation
2. transfer
3. transformation
4. transfer

not 100% but hope it helped kinda

8 0

3 years ago

Read 2 more answers

Wes melted some cheese over some tortilla chips to make nachos.

natima [27]

Answer:

a

Explanation:

Because the mass would stay the same and the flavor did not change and neither did the color so the shape is the only thing that changed

4 0

3 years ago

Given four particle models: which two models can be classified as elements?

Rainbow [258]

Where are the questions answer key

8 0

3 years ago

6th grade science i mark as brainliest

Inga [223]

A car sitting still
The distance is not changing which means the car is not moving

6 0

3 years ago

Read 2 more answers

When a piece of metal is irradiated with UV radiation (λ = 162 nm), electrons are ejected with a kinetic energy of 3.54×10-19 J.

dsp73

We have that the work function of the metal

$\phi=1.227*10^{-18}J$

From the Question we are told that

UV radiation (λ = 162 nm)

Kinetic energy $K.E =3.54*10-19 J.$

Generally the equation for Kinetic energy is mathematically given as

$KE =\frac{hc}{\pi-\phi} \\\\\phi =\frac{ 6.626*10^{-34} * 3*10^8}{162*10^{-9} -3.54*10^{-19}}$

$\phi=1.227*10^{-18}J$

For more information on this visit

brainly.com/question/12669551?referrer=searchResults

8 0

3 years ago