Which element has a mass number of 79?
gold
What element has a mass number of 50?
The elements of the periodic table sorted by atomic mass
| Atomic Mass | Name chemical element | number |
|---|---|---|
| 112.411 | Cadmium | 48 |
| 114.818 | Indium | 49 |
| 118.71 | Tin | 50 |
| 121.76 | Antimony | 51 |
Does baking soda and vinegar make helium?
No, as baking soda and vinegar create carbon dioxide, a greenhouse gas. Helium and sodium hexafluoride change your voice. Does the balloon float after I do the experiment?
Can you fill balloons with vinegar and baking soda?
By combining basic household ingredients like vinegar and baking soda, you set off a chemical reaction that results in carbon dioxide (the very same gas you exhale to blow up a balloon the old-fashioned way), allowing the balloon to inflate on its own.
What happens when you put baking soda and vinegar in a balloon?
When baking soda and vinegar are mixed together, it creates a gas called carbon dioxide. The gas begins to expand in the bottle and starts to inflate the balloon. The more gas that is created, the larger the balloon will inflate.
What happened when you released the balloon wrapped around the bottle?
This is why when a balloon is released, the high-pressure air flows out of the balloon to the low-pressure air surrounding it: “Winds blow from high to low.” The air in the balloon pushes out against the walls, keeping it inflated. When the hole is unplugged, air flows back into the bottle.
Why are balloons placed on top of flasks?
As it is heated the molecules in the air and the water speed up and spread out, taking up more space. Then the balloon is put on the flask, making it a closed system. Therefore, the pressure inside the flask is lower than the pressure outside of the flask.
What will happen when I place a flask with the balloon in the freezer?
The frozen balloon shrank because the average kinetic energy of the gas molecules in a balloon decreases when the temperature decreases. This makes the molecules move more slowly and have less frequent and weaker collisions with the inside wall of the balloon, which causes the balloon to shrink a little.
What happens if you leave an empty bottle in the freezer?
As your bottle cools down in the freezer, it will slowly collapse in on itself, like a giant hand is crushing it from the outside. The bottle will continue to collapse until the air inside is the same temperature as the surrounding air.
Why does a bottle of air collapse in the freezer?
When the plastic bottle was in the freezer with the cap on, the sides of the bottle collapsed. The cold in the freezer cools the air inside the bottle. As the air temperature changes, the air pressure drops and the sides of the bottle collapse.
What happened when the sugar flour and water were mixed and sealed in the bottle?
Answer. What happened when the sugar flour and water were mixed and sealed in the bottle? As the yeast eats the sugar, it releases a gas called carbon dioxide. Each bit of yeast makes tiny gas bubbles and that puts millions of bubbles (holes) in our bread before it gets baked.