Ask question

Ask question

All categories

3 years ago

8

Example of nobel gas

2 answers:

stepladder [879]3 years ago

7 0

Helium Two examples would be helium and argon.

yanalaym [24]3 years ago

5 0

Answer:

helium , krypton,xenon,radon, argon are noble gasses

You might be interested in

What is the exact mass of one mole of carbon-12 atoms

love history [14]

One atom of carbon weighs exactly 12/6.022x10^23 = 1.9927x10^-23 grams<span>.</span>

3 0

3 years ago

If we wanted to add to the Venn diagram to reflect the Arrhenius acid-base theory, which statements would be MOST appropriate? A

Arlecino [84]

Answer:b

Explanation:

4 0

3 years ago

Balance the following redox equation in acidic solution using the smallest integers possible and select the correct coefficient

romanna [79]

Answer:

Coefficient of $H^{+}(aq)$ is more than 4

Explanation:

Oxidation: $Sn^{2+}(aq)\rightarrow Sn^{4+}(aq)$

Balance charge: $Sn^{2+}(aq)-2e^{-}\rightarrow Sn^{4+}(aq)$ ......(1)

Reduction: $Cr_{2}O_{7}^{2-}(aq)\rightarrow Cr^{3+}(aq)$

Balance Cr: $Cr_{2}O_{7}^{2-}(aq)\rightarrow 2Cr^{3+}(aq)$
Balance O and H in acidic medium: $Cr_{2}O_{7}^{2-}(aq)+14H^{+}(aq)\rightarrow 2Cr^{3+}(aq)+7H_{2}O(l)$
Balance charge: $Cr_{2}O_{7}^{2-}(aq)+14H^{+}(aq)+6e^{-}\rightarrow 2Cr^{3+}(aq)+7H_{2}O(l)$ .......(2)

$[3\times Equation-(1)]+Equation(2)$ gives balanced equation:

$3Sn^{2+}(aq)+Cr_{2}O_{7}^{2-}(aq)+14H^{+}(aq)\rightarrow 3Sn^{4+}(aq)+2Cr^{3+}(aq)+7H_{2}O(l)$

So coefficient of $H^{+}(aq)$ is more than 4

3 0

3 years ago

1 Smurf = 3 Snorks<br><br> 1 Snork = 6 Pookas<br><br> 8 Pookas = 1 Flintstone1 Smurf = 3 Snorks

DIA [1.3K]

Answer:

all together you have 13

Explantation:

you have to add all them together

5 0

3 years ago

Question 9 (2 points)

KonstantinChe [14]

Answer:

0.39 moles

Explanation:

To find how many moles are in 50.0 g of CaC₂O₄ you divide the grams of the sample by the molar mass of the compound;

$\frac{50.0 g}{128.097 g/mol}$ =0.39 mol

The grams cancel out and you are left with moles!

I hope this help ^-^

7 0

2 years ago

Read 2 more answers