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baherus [9]
3 years ago
8

if an element [x] contains 8 protons, 8 neutrons and 8 electrons, the atomic number of the element is ?

Chemistry
1 answer:
Kaylis [27]3 years ago
7 0

Answer:

8

Explanation:

The atomic number refers to the number which identifies the element, which is the proton number.

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If a pure compound is distilled, the head temperature will be____compared to the pot temperature. If however, an impurity is pre
shutvik [7]

Answer:

If a pure compound is distilled, the temperature of the head will be compared to the temperature of the pot. However, if there is an impurity present that strongly interacts with the molecules of the liquid, then the temperature must be increased to increase the vapor pressure of the liquid, eventually to atmospheric pressure, allowing the liquid to boil. Therefore, at the boiling point, the temperature of the pot will be higher than the temperature of the head.

Explanation:

when temperatures increase, pressures also do so, thus reaching boiling points where liquid states become gaseous.

4 0
3 years ago
A can of coke contains 25 mL of carbon dioxide gas at 100kPa. If you take it on a hike up Mount Everest and the pressure decreas
Mazyrski [523]

Answer:

50 mL

Explanation:

We can solve this problem by using Boyle's Law, which states that:

"For a fixed mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume"

Mathematically:

p\propto \frac{1}{V}

where

p is the pressure of the gas

V is the volume of the gas

The equation can be rewritten as

p_1 V_1 = p_2 V_2

where in this problem:

p_1 = 100 kPa is the initial pressure of the gas in the coke

V_1=25 mL is the initial volume

p_2=50 kPa is the final pressure

Solving for V2, we find the final volume:

V_2=\frac{p_1 V_1}{p_2}=\frac{(100)(25)}{50}=50 mL

7 0
4 years ago
How did Dalton describe the relationship between atoms and elements? Atoms are made up of combinations of elements. An element i
Leni [432]

Answer:

when your fingers touch something your not touch it cause of the atom

but your hand touch a another person the atoms in each body reacts

8 0
4 years ago
Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation. Note: you are writing
Bad White [126]

Answer:

Ca(OH)₂ and HCl(aq)

Explanation:

We have the products of a reaction, CaCl₂ and H₂O. Since the products are a salt and water, this is likely to be a neutralization reaction. In such a reaction, an acid and a base react to form a salt and water.

  • The acid provides the anion of the salt. Since the anion is Cl⁻, the acid is HCl(aq).
  • The base provides the cation of the salt. Since the cation is Ca²⁺, the base is Ca(OH)₂(aq).

The complete molecular equation is:

Ca(OH)₂ + 2 HCl(aq) → CaCl₂ + 2 H₂O

6 0
4 years ago
A geochemist examines a piece of metal that he found in the soil. He performs tests to identify the metal from its density, elec
aniked [119]

Answer:

what r the statements?

Explanation:

attach or write them

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4 years ago
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