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mojhsa [17]
3 years ago
8

Which of the following is always a reactant in a combustion reaction?

Chemistry
2 answers:
Margaret [11]3 years ago
6 0
I believe it’s oxygen

Marina86 [1]3 years ago
5 0

Answer:

Oxygen

Explanation:

Any Hydrocarbon + Oxygen ----> Carbon Dioxide + H2O (Water vapour, gas, water)

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Which of the following is not a correct chemical equation for a double displacement reaction?
Step2247 [10]

Answer:

B. CaCl + LiCO3 yields CaCO3 + LiCl is not correct

It should be CaCl2 + Li2CO3  → 2LiCl + CaCO3

Explanation:

For a reaction to be double displacement reaction there are two things we need to look for

1) There must be an interchange of the group of ions

2) The reactants must dissolve in water to release ions

A. 2RbNO3 + BeF2 yields Be(NO3)2 + 2RbF

2Rb+ + NO3- + Be^2+ + 2F- → Be(NO₃)₂ + 2RbF

This is correct

B. CaCl + LiCO3 yields CaCO3 + LiCl

This is not correct

The correct equation is:

CaCl2 + Li2CO3  → Ca2+ + 2Cl- + 2Li+ + CO3^2-  → 2LiCl + CaCO3

C. Na3PO4 + 3KOH yields 3NaOH + K3PO4

3Na+ + PO4^3- + 3K+ + 3OH- → 3NaOH + K3PO4

This is correct

D. 2MgI2 + Mn(SO3)2 yields 2MgSO3 + MnI4

2Mg^2+ + 4I- + Mn^4+ + 2SO3^2- → 2 MgSO3 + MnI4

This is correct

8 0
3 years ago
Can someone please help me with the with this
solong [7]

Answer:

Chemical

Explanation:

4 0
3 years ago
Write the electron configuration for the element titanium, Ti.
SOVA2 [1]

Answer:

[Ar] 3d^{2} 4s^{2}

Explanation:

You can look at the periodic table and figure out the electron config.

8 0
2 years ago
If a proton is added to the nucleus of germaium what out comes would acure
r-ruslan [8.4K]
When a proton is added to the germanium nucleus, then its atomic number becomes 33, which is the atomic number of arsenic.

HOPE THIS HELPS YOU!!!!
3 0
2 years ago
HELP THIS IS FOR CHEM!! If the pull force is 898N and the friction force is 335N what is the net force?
Nezavi [6.7K]

Answer:

                                               

Explanation:

                         

                                 

                                             

3 0
2 years ago
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