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3 years ago

What are the answers to these?

Chemistry

1 answer:

antiseptic1488 [7]3 years ago

4 0

Answer: 1. AgF + CaCl2 = AgCl + CaF2

2. C2H4 +O2 = CO2 +H2O

3. K2S = K+S

4. O2 + Mg = MgO

5. Mg + AlBr3 = MgBr2 + Al

6.C2H6O + O2= CO2 + H2O

7.Li2SO4 + MgCl2= Li2SO4 + MgCl2

8.HCl + Zn= H2 + ZnCl2

Explanation:

Balance the equation

Write down your given equation.

Write down the number of atoms per each element that you have on each side of the equation.

Always leave hydrogen and oxygen for last.

If you have more than one element left to balance:

Add a coefficient to the single carbon atom on the right of the equation to balance it with the 3 carbon atoms on the left of the equation.

Balance the hydrogen atoms next.

Balance the oxygen atoms.

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How much energy is required to raise 10 grams of water by 10 degrees Celsius? (in Joules)

Georgia [21]

Answer:

420j

Explanation:

Heat capacity =10*4.2*10

=420j

4 0

2 years ago

Read 2 more answers

What is the molarity of the solution with a volume of 23.47 Liters and 14.968 moles?

MrMuchimi

Answer:

0.6378 M

Explanation:

Molarity is defined by Moles per liter.

Plugging the given information in, we get (14.968 moles)/(23.47 L) which comes out to be about 0.6378 M

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2 years ago

Natation TT mean to genetics

neonofarm [45]

I am not sure what you are asking, but TT likely refers to the pure tall peas Mendel worked with.

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2 years ago

Which of the following contains the same number of electrons as an atom of neon?

asambeis [7]

Answer:

D. $O^{2-}$

Explanation:

In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.

Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others. Thus, this property is typically used to determine the chemical properties of elements.

Oxygen has a total number of eight (8) electrons and as such the $O^{2-}$ is able to gain (receive) two (2) more electrons in order to have the same electron arrangements as the noble gas i.e an atom of neon that has a total number of ten (10) electrons.

Hence, $O^{2-}$ contains the same number of electrons as an atom of neon.

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2 years ago

When was the death of all dinosuars?

liberstina [14]

The Cretaceous-Tertiary extinction event , the name given to the die off dinosaurs, they all died off about 65.5 million years ago . They died by climate and geological changes .

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2 years ago