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lapo4ka [179]
3 years ago
5

PLEASE HELP THESE ARE MY LAST 3 QUESTIONS LEFT AND IM HAVING TROUBLE WITH THEM

Chemistry
2 answers:
Helga [31]3 years ago
7 0
1).................
Mashcka [7]3 years ago
3 0

Answer:

1)

2)Hg2 3 po4 2

Mercury(I) Phosphate (Hg2)3(PO4)2 Molecular Weight

3)2C6H14 + 19O2 → 12CO2 + 14H2O + heat

Explanation:

i dont know the 1st one i ggoles the 2nd one and it gave me this, hope it helps

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Select ALL that apply for how to name a BINARY acid. *
Ne4ueva [31]
I would say “ends with -ic” , “starts with hydro”,
7 0
3 years ago
What is the density of a 10 kg mass that occupies 5 liters?<br> ( pls need help)
bulgar [2K]

Answer: d=2000 g/L

Explanation:

Density is mass/volume. The units are g/L. Since we are given mass and volume, we can divide them to find density. First, we need to convert kg to g.

10kg*\frac{1000g}{1kg} =10000 g

Now that we have grams, we can divide to get density.

d=\frac{10000g}{5 L}

d=2000g/L

7 0
4 years ago
If an element has 13 protons, how many electrons are in its outer shell?
stealth61 [152]
There will be three electrons in the outer shell.
7 0
4 years ago
Which of the following is not a conjugate acid-base pair?
-Dominant- [34]

Answer:

A. H3O+/OH−

Explanation:

A conjugate acid-base pair are a pair of molecules that differ in 1 H⁺

A. The conjugate pair of H₃O⁺ = H₂O not OH⁻

B. The conjugate pair of NH₄⁺ is NH₃

C. The conjugate pair of C₂H₃O₂⁻ is HC₂H₃O₂

D. The conjugate pair of H₂SO₃ is HSO₃⁻

That means right option, that is not a conjugate acid-base pair, is:

<h3>A. H3O+/OH− </h3>

5 0
3 years ago
A postulate of the kinetic molecular theory is listed.
valina [46]

Answer:

Postulate: Gas particles are extremely small and are far apart.

The activities can be used to demonstrate the postulate is :

<u>Observing colored gas spreading into an inverted jar placed on top of a jar containing the gas</u>

<u />

Explanation:

colored gas spreading into an inverted jar placed on top of a jar containing the gas:

This occur because of two reasons:

1. <em><u>The Gaseous particles are largely spaced . There is large distance between the gases molecule</u></em>

<em><u>2. The gases are in continuous motion . Hence they posses very high kinetic energy . This is the reason they mixes quickly if placed in a jar.</u></em>

<em><u>This occur by the process of diffusion. </u></em>

Diffusion of Gases: The intermixing of particles from the region of high concentration to low concentration.

The coloured gas goes into the space between the gaseous molecule present in the jar.(Gases are far apart)

As soon as the coloured gas is mixed in the jar , It spread quickly by diffusion because , The gaseous particles are extremely small and are far apart.

5 0
4 years ago
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