A. They have performed an experiment once and reported their findings.
What type of reaction is FeS + 2HCl àFeCl2 + H2S?
Answer: 3 4 a noodles
Explanation: just is[tex]\lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \sqrt{x} x^{2} x^{2}[/tex]
What is bonding all about in chemistry?
Answer:
It is like about a attraction between atoms, molecules, and more.
After burning your candle for a few hours you and your friend notice that it's mass has decreased. Your friend claims that the mass "disappeared". Why do you know he is wrong (Hint: it's a Scientific Law)? What actually happened to the mass? What form is that mass in now? What is this process called?
Answer:
The law of conversion of mass is a scientific law that says that mass or matter can not be created or destroyed like energy but changes its form in a different type of state. So, by the law of conversion of mass, you can say that mass is not disappeared but change in different forms of states of matter like gas, soot, or melted residues of candle and ash of thread.
Due to this, the mass of the solid or waxy state due to burning changes to gas released by burning and residue of wax that will be equal to the mass of the original mass.
The elements fluorine (F), chlorine (Cl), and iodine (I) are all part of the same _________on the periodic table.
Explanation:
The elements Fluorine (F),Chlorine (Cl) and Iodine (I) are all part of the same Group ( i.e, Group 17 ) on the periodic table.
Answer:
Group
Explanation:
Which of the following situations would cause light to refract?
When light passes from one medium to the other of different density, the light ray will bend. This is called refraction. Light moving from air to water cause refraction. Hence, option d is correct.
What is refraction ?Refraction is a phenomenon in which a light ray bent in its direction when passing from one medium to the other where the mediums have different densities.
The measure of bending of light in a medium is called refractive index of that medium. It depends on the density as well as velocity of light through the medium.
For example, when light passes from air to water or air to glass it bends. We can clearly observe the bending in the light ray at the boundary of the two mediums. Hence, option D is correct.
Find more on refraction:
https://brainly.com/question/29692290
#SPJ6.
The options of your question were as follows:
A. traveling through a vacuum B. passing from one glass block to another C. moving through the air D. moving from air to water.
What is the nuclear charge of an atom of Silver?
A) +79
B) +47
C) +108
D) +61
Answer:
47 is your correct ans, which is b
During a chemical reaction, heat is absorbed. What kind of reaction occurred?
A)
An endothermic reaction
B)
An exothermic reaction
Answer:
b
Explanation:
73 gram of HCl was filluted by adding 144gram of water.how many gram atom of hydrogen are present in the dilute acid?
Mass of Hydrogen atoms : 18 g
Further explanationGiven
73 gram of HCl
144gram of H₂O
Required
Mass (gram) atom of Hydrogen
Solution
H atoms are in 2 compounds, H₂O and HCl, so we calculate their mass in each compound
mass H in H₂O :[tex]\tt \dfrac{1}{36.5}\times 73=2~g[/tex]
mass H in HCl :
[tex]\tt \dfrac{2}{18}\times 144=16~g[/tex]
total mass = 2 g+ 16 g = 18 g
54:63 ratio simplest form?
Answer:
The fraction is 6/7
Explanation:
6/7 is the simplified fraction for 54/63 by using the GCD or HCF method. Thus, 6/7 is the simplified fraction for 54/63 by using the prime factorization method.
Hope this helps!!!
Can I have Brainliest???
The ____ are new substances that are created following a chemical reaction. *
A:chemical reactions
B:products
C:reactants
D:coefficients
Answer:
b
Explanation:
____ describes the quantity of solute that
can dissolve in a given amount of solvent at a
given temperature.
A. Viscosity
B. Solubility
C. Fluidity
D. Permeability
Answer:
B
Explanation: