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Ne4ueva [31]
3 years ago
15

Two students make a model of a tree house they want to build. the scale is 1:42 in the scale model the tree house door is 3 cm t

all
How tall should the real house door be?
Chemistry
1 answer:
Flura [38]3 years ago
4 0

Answer:126

Explanation:

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Please I need this help me​
BaLLatris [955]

Answer:

first of all is that really chemistry

3 0
3 years ago
A beaker containing 6.32 moles of PBr3, contains___
NISA [10]

Answer:

3.8 x 10²⁴molecules

Explanation:

Given parameters:

Number of moles  = 6.32moles

Unknown:

Number of molecules  = ?

Solution:

The number of moles can be used to derive the number of molecules found within a substance.

Now,

       1 mole of substance contains 6.02 x 10²³ molecules

     6.32 mole of PBr₃ will contain 6.32 x 6.02 x 10²³ = 3.8 x 10²⁴molecules

8 0
3 years ago
Which of these is most likely to create large areas of land subsidence?
Mumz [18]
I think it is Global warming
6 0
3 years ago
What is the total number of protons in carbonate, CO2/3- please help
Veseljchak [2.6K]

Answer:

30 positive charged protons

8 0
3 years ago
How many grams of copper (II) oxide will react with 10 liters of hydrogen gas?​
Svetradugi [14.3K]

Answer:

maybe 200g

I don't know thats just a guess

HOPE ITS TURE

8 0
3 years ago
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