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antoniya [11.8K]
3 years ago
7

Eric's father asked an engineer to survey the field behind their house. He wanted to plant some apple and pear trees there. Acco

rding to the survey, the field is 38 meters (m) long and 17 meters (m) wide. What is the perimeter of the field in centimeters?
Chemistry
1 answer:
scoray [572]3 years ago
5 0

Answer:

P=110 m

Explanation:

Length of the field is 38 m

Breadth of the field is 17 m

We need to find the perimeter of this field. It is in the form of a rectangle. The perimeter of a rectangle is given by :

P=2(l+b)

P=2(38+17)

P=110 m

So, the perimeter of this field is 110 m.

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One atomic model describes electrons moving in clouds around the nucleus.
bixtya [17]

Answer: D.  It is the currently accepted atomic model.

Explanation:

It is the mordern atomic model, also known as the Electron Cloud Model. Indicating that the nucleus of an atom is surrounded by a cloud of electrons.

8 0
3 years ago
C2h4 3 o2 2 co2 2 h2o
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Use the question marck Moles of CO2
The the giving = 0.624 mol O2
Find the CF faction = 1 mole=  32.00 of O2

O= 2x16.00= 32.00amu ( writte this in the cf fraction)
SET UP THE CHART
Always start with the giving

0.624 mol O2    /  1mol of CO2
___________  / _____________ = Cancel the queal ( O2)
                       / 32.00c O2
                      /
                     /
Multiply the top and divide by the bottom 
0.624 mol CO x 1mol CO2 = 0.624 divide by 32.00 O2 =0.0195
You should look at the giving number ( how many num u gor ever there) 
Ur answer should have the same # as ur givin so 
= 0.0195 
= .0195 mol of CO2
3 0
3 years ago
A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it?
nataly862011 [7]

Answer:

Na

Explanation:

8 0
3 years ago
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IceJOKER [234]
You can find this on google easily
4 0
3 years ago
How do i calculate the mass of CO2 emitted per Kj of heat produced in a combustion reaction?
Alexxandr [17]
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1 mole CO2 has a molar mass of 44.01 gh/mole
 
your set up is:
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your answer 0.06058 grams of CO2 produced per kJ released.
6 0
4 years ago
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