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Anika [276]
3 years ago
5

Comets orbit in short, circular paths around the sun. Is this true or false..? Thank you!

Chemistry
2 answers:
Luba_88 [7]3 years ago
7 0
The answer to your question is true.
Nuetrik [128]3 years ago
3 0
I think it's false because they travel in an elliptical pattern around the sun. There are some comets that travel in a 'v' shape.
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Balance this equation. if a coefficient of "1" is required, choose "blank" for that box.
blondinia [14]
Step 1: Write Imbalance Equation

                            CH₃CHO  +  O₂    →    CO₂  +  H₂O

Step 2: Balance Carbon Atoms:
                                                 There are 2 carbon atoms at reactant side and one at product side. So multiply CO₂ with 2 to balance them. i.e.

                             CH₃CHO  +  O₂    →    2 CO₂  +  H₂O 

Step 3: Balance Hydrogen Atoms:
                                                      There are 4 hydrogen atoms at reactant side and 2 Hydrogen atoms at product side. So, multiply H₂O by 2 to balance Hydrogen on both sides. i.e.

                    CH₃CHO  +  O₂    →    2 CO₂  +  2 H₂O

Step 4: Balance Oxygen Atoms:
                                                   There are 3 Oxygen atoms at reactant side and 6 Oxygen atoms at product side. In order to balance them multiply O₂ on reactant side by 2.5 (5/2). i.e  

                    CH₃CHO  +  5/2 O₂    →    2 CO₂  +  2 H₂O

Step 6: Eliminate Fraction:
                                         Multiply overall equation by 2 to eliminate fraction. i.e. 

                    2 CH₃CHO  +  5 O₂    →    4 CO₂  +  4 H₂O
7 0
3 years ago
Fluoride ion is poisonous in relatively low amounts: 0.2 g of F− per 70 kg of body weight can cause death. Nevertheless, in orde
Jobisdone [24]

Answer:

200 L per day

Explanation:

If there is 1 mg of F- per L of water, we can calculate the volume for 2 g like this:

1) Converse the toxic mass of fluoride to miligrams

1 g ------- 1000 mg

0.2 g ----  X

X = 200 mg

2) Calculate the liters of fluoridated drinking water that a person can consume to reach 200 mg

1 mg -------- 1 L

200 mg ---- X

x = 200 L

4 0
3 years ago
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What are three methods of measuring the volume of an object?
Anarel [89]
L×w×h=v
length times width times height equals volume
the order in which you multiply does not matter
5 0
3 years ago
Brent wants to fly a kite during a lightning storm at night. His friend warns him that this increases his chance of being struck
Vesna [10]

Answer:

D

Explanation:

3 0
3 years ago
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If an atom has more protons than an electron, its net charge will be
Ierofanga [76]

Answer: If an object has more protons than electrons, then the net charge on the object is positive. If there are more electrons than protons, then the net charge on the object is negative. If there are equal numbers of protons and electrons, then the object is electrically neutral.

Explanation:

3 0
4 years ago
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