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3 years ago

Which of the following particles are free to drift in metals?

Chemistry

1 answer:

Nostrana [21]3 years ago

8 0

Answer:

Electrons

Explanation:

"This free-floating collection of electrons gives metals many of their unique properties, and is sometimes called a “sea of electrons,”

Learn more about it at this website:

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=2ahUKEwjUw9Sbl7nmAhWQKs0KHXFGCakQFjACegQICxAK&url=https%3A%2F%2Futexaslearn.instructure.com%2Fcourses%2F2010099%2Fpages%2Fexplain-i-metallic-bonding-and-properties-2&usg=AOvVaw3B0fp0MY7ut9ssl_ebAgP7

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Find the mass of (1) potassium which contains the same number of atoms as 5g of zinc and (2) iron which contains the same number

charle [14.2K]

Convert grams to moles
moles to moles
moles to grams

A. 2.99g
b. 20.88g

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3 years ago

Cow’s milk is 4.5% by mass of lactose. Calculate the mass of lactose present in 175 g of<br> milk

Reptile [31]

Answer:

7.875 grams

Explanation:

You multiply 175 g by .045

This gives you 7.875 grams of lactose

6 0

3 years ago

Which description best characterizes the motion of particles in a solid?

Masja [62]

Answer:

D. Vibrating around fixed positions

Explanation:

It's right on edge

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3 years ago

How many joules of energy are made by the loss of 100kg of mass using the formula E=mc2? please help!!!

asambeis [7]

Answer:

E = 3 × 10¹⁰ J

Explanation:

Mass, m = 100 kg

We need to find energy made by the loss of 100 kg of mass. The formula between the mass and energy is given by :

E = mc²

Where c is speed of light

Putting all the values, we get :

E = 100 kg × (3×10⁸ m/s)²

= 3 × 10¹⁰ J

So, the required energy is 3 × 10¹⁰ J.

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3 years ago

When an acid mixes with a bases it is called a combination reaction? <br>true<br>false

guajiro [1.7K]

False it is actually called a neutralization reaction.

5 0

2 years ago