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igomit [66]
3 years ago
6

¿Cómo se llama el grupo IIA de la tabla periódica?

Chemistry
1 answer:
Verdich [7]3 years ago
8 0

Answer:

los metales alcalinotérreos: berilio (Be), magnesio (Mg), calcio (Ca), estroncio (Sr), bario (Ba) y radio (Ra).

o simplemente llamado grupo 2A

Explanation:

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Pani-rosa [81]

Answer : The mass of of water present in the jar is, 298.79 g

Solution : Given,

Mass of barium nitrate = 27 g

The solubility of barium nitrate at 20^oC is 9.02 gram per 100 ml of water.

As, 9.02 gram of barium nitrate present in 100 ml of water

So, 27 gram of barium nitrate present in \frac{27g}{9.02g}\times 100ml=299.33ml of water

The volume of water is 299.33 ml.

As we know that the density of water at 20^oC is 0.9982 g/ml

Now we have to calculate the mass of water.

\text{Mass of water}=\text{Density of water}\times \text{Volume of water}

\text{Mass of water}=(0.9982g/ml)\times (299.33ml)=298.79g

Therefore, the mass of of water present in the jar is, 298.79 g

5 0
3 years ago
What do you mean by PCM​
alexandr402 [8]

Answer:

Pulse-code modulation

Explanation:

3 0
3 years ago
11. What are transition metals?
kolezko [41]

Answer:

Elements that fall between those on the left and right sides of the periodic table

Explanation:

Transition metals:

These are present at the center of periodic table.

These are d-block elements.

They include the elements of group 3 to 12 in periodic table.

They have large charge to radius ratio.

They mostly form paramagnetic compounds.

They shoes more than one oxidation state.

They form colored compounds.

They all have high melting and boiling point.

They have high densities.

They form stable complexes.

The elements of f-block are also transition but they are called inner transition.These are consist of two series lanthanide and actinides.

8 0
3 years ago
What is the difference between a rock and a mineral?
SVEN [57.7K]

Answer:

A rock is an inconsistent mixture of minerals, while mineral is "pure" and made  up of a precise combination of chemicals.

Explanation:

5 0
3 years ago
When a substance condensed, what happens to the mass? (4 points)
kogti [31]
I think it 's B hope it helps
4 0
3 years ago
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