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olga55 [171]
3 years ago
11

25 POINTS!!!

Chemistry
1 answer:
Verdich [7]3 years ago
7 0

Answer:

1`0

Explanation:

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What is an atomic weight?
S_A_V [24]
The average weight of an atom of an element, formerly based on the weight of one hydrogen atom taken as a unit or on 1/16 (0.0625) the weight of an oxygen atom, but after 1961 based on 1/12 the weight of the carbon-12 atom.
3 0
3 years ago
How many grams of Mg are needed to produce 224 g of MgO in the complete reaction of Mg
zmey [24]

Answer:

134.4 g of Mg

Explanation:

reaction:

2Mg + O2 ➡️ 2MgO

1) find the mol of MgO

mol = mass / molar mass

mass = 224 g

molar mass = 24+16 = 40

mol = 224 / 40

= 5.6 moles

2 mol = 5.6 moles

2) find the mass of Mg

mass = mol × molar mass

mol = 5.6

molar mass = 24

mass = 5.6 × 24

= 134.4 g

7 0
3 years ago
Explain why a wooden spoon is a better choice than a metal spoon for stirring a boiling pot of soup
PtichkaEL [24]
A wooden spoon insulates itself and retains no heat, a mental spoon would retain heat, and probably burn your hand<span />
7 0
3 years ago
NEED HELP ANSWERING THIS QUESTION
victus00 [196]

Answer:

I think the answer is A.

please give thanks if it helps

and sorry if it doesn't help.

4 0
3 years ago
The answer to the problem: 3.6 x 4.639 + 5.831 = _____, written to the correct number of significant digits is:
natka813 [3]

Answer:

3.6 x 4.639 + 5.831 = 2000

Explanation:

In this problem, we need to find the value of 3.6 x 4.639 + 5.831.

Here, 3.6 has 2, 4.639 and 5.831 has 4 significant figures.

We can use BODMAS RULE to find it as follows :

3.6 x 4.639 + 5.831 = (3.6 x 4.639) + 5.831

= 2325.96 + 5.831

in significant gigure,

= 2300 + 5.831

= 2305.831

In one significant figure,

= 2000

Hence, the answer of the problem is 2000.

4 0
3 years ago
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