2 years ago

How much energy is needed to raise 70 g of paper 40 degrees celsius?

1 answer:

5 0

Explanation: Heat capacity is the amount of heat required to change the temperature of a ... Therefore, specific heat is measured in Joules per g times degree Celsius

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Calculate the molar mass of aluminum oxide (Al2O3). Express your answer to four significant figures.

NISA [10]

Answer:

102.0 g/mol

Explanation:

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3 years ago

A metallic material that is made by uniformly mixing copper with zinc to form bronze.

Airida [17]

YOU SUCK YOUR MOMS CHIVKEN NUGGA YOU WHODDDDDDD :))))))))) \\\

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2 years ago

Explain how elements are arranged on the periodic table. What does the table tell you when you read it like sentences in a book

DochEvi [55]

Explanation:

In periodic table:

Elements are arranged according to their atomic number in increasing order.
When we move left to right we move along a period.The period in the periodic table tell us about the principal quantum number,(n).
When move from top to bottom we are moving in group. The group in the periodic table tell us about the number of the valence electrons present in the valence shell of the elements of the particular group.

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3 years ago

Read 2 more answers

A match has about 21 milligrams of red phosphorus coating the tip. How many atoms of phosphorus is this?

MAXImum [283]

Answer:

4.083 * 10^20 atoms.

Explanation:

One Mole of phosphorus contains 6.022 * 10^23 atoms (Avogadros number)'

Since 1 mole of Phosphorus has a mass of 30.974 grams, 21 milligrams has

6.022 * 10^23 * 0.021 / 30.974

= 0.004083 * 10^23

= 4.083 * 10^20

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2 years ago

The anion formed from an oxygen atom is called a(n)

marta [7]

A. Oxygen ion
I am not sure but that's the right one I think. If I am wrong then I am sorry

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3 years ago