Answer:
Explanation:limestone
CO2 is emitted from the calcination process of limestone, from combustion of fuels in the kiln, as well as from power generation.
calculate the percent by mass of 4.35g of Na I dissolved in 105g of water
We are given:
Mass of Na added = 4.35 grams
Mass of water = 105 grams
Mass Percent of Na:
Total mass of the solution = mass of solute + mass of solvent
Total mass of the solution = 4.35 + 105 = 109.35 grams
Mass percent of solute = (mass of solute / mass of solution) * 100
Mass percent of Solute = (4.35 / 109.35) * 100
Mass percent = 3.978 %
Can you use mass and volume to predict whether an object will sink or float in water? Explain your thinking.
Answer:
Yes. u can because its easy to tell if an item will sink or float usually by the weight or the width
Explanation:
QUICK! Which best explains how the collisions of materials in space contribute to the formation of layers in protoplanets?
A: The materials undergo decay when they collide, which results in the heating and subsequent melting and rising of materials.
B: The collisions release heat, which results in the heating and subsequent melting, sinking, and rising of materials.
C: The materials undergo decay when they collide, which results in the cooling and subsequent hardening and sinking of materials.
D: The collisions absorb heat, which results in the cooling and subsequent hardening and rising of materials.
Answer:
B. The collisions release heat, which results in the heating and subsequent melting, sinking, and rising of materials.
Explanation:
Got it correct on edge
Answer:
the answer is B: The collisions release heat, which results in the heating and subsequent melting, sinking, and rising of materials.
Explanation:
I took the test
The definition of is the study of quantitative relationships between the amounts of reactants and products.
a)chemical equations
b) stoichiometry
c) molar mass
d)coefficient
Answer:
b) stoichiometry
Explanation:
Stoichiometry is the study of quantitative relationships between the amounts of reactants and products.
The word is coined from two Greek words; stoicheon which means atom and metron which means measurement. It deals with chemical calculations based on the elementary particles of matter. Such calculations highlights the relationships between the composition or chemical reactions of matter and the mole.Which of the following are most reactive?
Question 16
Which of the following is an example of a chemical property of matter?
А
reaction with another element
B
density of an element
C
color of an element
D
freezing point of element
Explanation:
A reaction with another element
other choices are physical property
Answer:
A. reaction with another element
Write a complete balanced equation for: magnesium(s) + chloric acid (aq) ? + ?
The diagram shows a conglomerate (mixture) rock. Some of the rock particles are labeled. State which rock group this conglomerate belongs to and explain your answer.
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Please and thank you. (If you give me all of the correct answers I will create a 100 point question for you.
Answer: I saw the other question with screen shot Thanks
4. Answer, Like gases, plasmas have no fixed shape or volume, and are less dense than solids or liquids. But unlike ordinary gases, plasmas are made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely.
5. Answer The energy associated with an object's motion is called kinetic energy. A speeding bullet, a walking person, and electromagnetic radiation like light all have kinetic energy. Another example of kinetic energy is the energy associated with the constant, random bouncing of atoms or molecules.
6.Answer is solid
Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.
7. Answer Water behaves differently to most other substances because, in its solid state (ice), its particles are less densely packed than in its liquid state. This is why ice floats.
8. Answer 212 degrees F.
Sea Level: Water boils at 212 degrees F. and simmers at 190 degrees F.
9. Answer When an object is heated the motion of the particles increases as the particles become more energetic. If it is cooled the motion of the particles decreases as they lose energy.
10. Answer CHEMISTRY TERM PHASE CHANGE
Fusion/Melting Freezing Vaporization/Boilin Condensation Sublimation Deposition Solid to a Liquid Liquid to a Solid Liquid to a Gas Gas to a Liquid Solid to a Gas Gas to a Solid
11. Answer is Energy is consumed (endothermic) to melt ice (solid to liquid) so the opposite process (liquid to solid) must be exothermic.
12.In simple terms, the endothermic reactions absorb energy from the surrounding that is in the form of heat. On the other hand, an exothermic reaction releases energy into the surrounding of the system.
ok alright. But where’s the question?
Acceleration of an object
Answer:
velocity
Explanation:
The definition of acceleration is: Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.
In what form is carbon found in the atmosphere?
Answer:
In the atmosphere carbon is found as carbon dioxide
Explanation:
f the solubility of sodium chloride (NaCl) is 30.6 g/100 mL of H2O at a given temperature, how many grams of NaCl can be dissolved in 250.0 mL of H2O
Answer:
76.5 grams
Explanation:
Solubility of sodium chloride = [tex]\dfrac{30.6}{100}=0.306\ \text{g/mL}[/tex]
Now volume of water is 250 mL
We have to find the amount of NaCl that can be dissolved in the above mentioned amount of water
Let the mass of NaCl that can be dissolved be m so
[tex]\dfrac{m}{250}=0.306\\\Rightarrow m=250\times0.306\\\Rightarrow m=76.5\ \text{g}[/tex]
The mass of NaCl that can be dissolved is 76.5 grams.