a 15.5g sample of x combine with 42.5g of y to from the compound XY3 what are the mass of reactant and product
Answers
Explanation:
Given parameters:
Mass of sample X = 15.5g
Mass of sample Y = 42.5g
Unknown:
Mass of reactant and product = ?
Solution:
We can solve this problem by applying the law of conservation of mass. The law states that "in a chemical reaction, matter is neither created nor destroyed but changed from one form to another".
We expect that the sum of the mass of the reactant will be equal to that of the product;
Mass of reactant = mass of X + mass of Y = 15.5g + 42.5g = 58g
So, mass of XY₃ = 58g
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Answers
Answer:
gravity
Explanation:
your mass is the same on the moon as is on earth or underwater but your weight changes because of gravity
A. High concentration of oxygen in the blood; high concentration of carbon dioxide in the body tissues
B. Low concentration of oxygen in the blood; high concentration of carbon dioxide in the body tissues
C. High concentration of oxygen in the blood; low concentration of carbon dioxide in the body tissues
D. Low concentration of oxygen in the blood; low concentration of carbon dioxide in the body tissues
Answers
Answer:
A. High concentration of oxygen in the blood; high concentration of carbon dioxide in the body tissues
Explanation:
Diffusion occurs from a region of higher concentration to a region of lower concentration. Diffusion occurs against a concentration gradient.
High concentration of oxygen in the blood causes oxygen to leave the blood and enter body tissues. High concentration of carbon dioxide in the body tissues causes carbon dioxide to leave body tissues and enter the blood.
Answers
Answers
The two subspecialty of astronomy are astrophysics and planetaryscience. Correct option is D.
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Astrophysics: Astrophysics is a branch of astronomy that deals with the physical properties, behavior, and interactions of celestial objects. It involves the application of physics principles and theories to understand the nature of stars, galaxies, black holes, and other cosmic phenomena. Astrophysicists study the processes that govern the birth, evolution, and death of stars, as well as the formation and dynamics of galaxies.
Planetary Science: Planetary science is another subspecialty of astronomy that focuses on the study of planets, moons, asteroids, comets, and other objects within our solar system and beyond. Planetary scientists investigate the geology, atmospheres, surfaces, and composition of planets and their satellites. They also study the origin and evolution of planets, the potential for habitability, and the possibility of past or present life on other celestial bodies.
Both astrophysics and planetary science are essential in expanding our understanding of the cosmos. Astrophysics helps us comprehend the fundamental principles and processes that govern the entire universe, while planetary science provides insights into the unique characteristics and properties of the planets and bodies within our solar system, shedding light on potential habitability and the origins of life.
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Which type of reaction is represented?
(1) single replacement (3) synthesis
(2) double replacement (4) decomposition
Answers
Answer: (1) single replacement
Explanation:
A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution.Thus magnesium can easily lose electrons as compared to silver and result in the formation of magnesium nitrate and silver.
Double displacement is a chemical reaction in which ion exchange takes place.
Synthesis reaction is a chemical reaction in which two reactants combine to give a single product.
Decomposition is a chemical reaction in which one substance decompose to give two or more than two products.
Which type of reaction is represented?
double replacement
double replacement a bimolecular process involving the exchange of bonds between the two reacting chemical species, which
results in the creation of products with
similar or identical bonding affiliations.
To illustrate, consider two chemical species, AB and CD, which react to give AD and CB:
AB + CD → AD + CB
(B) CO₃^{2−}
(C) Fe^{3+}
(D) Al^{3+}
(E) Pb^{2+}