Answer:
Hello There!!
Explanation:
Pure products come from and made where they are original made and raw products are just pasteurized with no added ingredients included in them.
hope this helps,have a great day!!
~Pinky~
Most physical and chemical changes in matter include a change of energy true or false
Answer: true
Explanation:
Energy changes are a common component of physical and chemical changes in matter. Hence the statement is True.
Briefing:Physical changes and chemical changes are the two different types of changes that chemists examine. A substance can undergo physical changes without having its identity altered. Chemical transformations take place when one substance transforms into another.
Which is a chemical change?When one chemical material changes into one or more others, as when iron rusts, this is referred to as a chemical transformation. Chemical reactions produce changes in the way that atoms and molecules are ordered, which leads to the formation of new substances with new properties.
To know more about Chemical change visit:
https://brainly.com/question/23693316
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If 747 joules of energy is added to a sample of aluminum (specific heat capacity = 0.899 J/g*C) and the temperature goes up from 105.0*C to 121.0*C, what is the mass of the aluminum sample?
Answer:
m = 51.93 grams
Explanation:
Given that,
Energy added, Q = 747 joules
The specific heat capacity of Aluminium, c = 0.899 J/g°C
The temperature goes from 105.0°C to 121.0°C.
Let the mass of the aluminum sample is m. We know that, the heat added to the system is given by :
[tex]Q=mc\Delta T\\\\m=\dfrac{Q}{c\Delta T}\\\\m=\dfrac{747}{0.899 \times (121-105)}\\\\m=51.93\ g[/tex]
So, the mass of the sample is 51.93 grams.
What is the highest sublevel for the element Boron?
Answer:
2p
Explanation:
Boron is a member of group 13. The highest energy sub-level is usually found on the outermost shell of the atom of the element involved.
For a group 13 element, its outermost shell configuration is ns2 np1. The electronic configuration for boron is; 1s2 2s2 2p1.
Hence the highest energy sub-level in boron is 2p.
Name the type of marked carbon
Question 3.
The practice of growing two or more dissimilar crops in the same field one after another is
(a) crop rotation
(b) tilling
(c) plantation
(d) weeding
Answer:
(a) Crop rotation.
Explanation:
Crop rotation is the rotational cultivation of crops one after another in the same field or area. This means that different crops are cultivated in sequence, one after the other, on a rotational basis.
Crop rotation is one way of maintaining the nutrients of the soil. It also allows for the production of different crops without the need to move from one place to another. Crop rotation also helps in growing seasonal crops, thereby making crop production stable, providing a constant supply of crops for the farmers.
Thus, the correct answer is option a.
explain why magnesium is a better conductor of electricity than sodium
Answer:
When magnesium ions are broken off the solid lattice and go into solution, there is enough attraction between the 2+ ions and the water molecules to get co-ordinate (dative covalent) bonds formed between the magnesium ions and lone pairs on surrounding water molecules… making it more conductive than sodium.
Hillsdale and Cordera are the same distance from the equator, and both are near the ocean. Is Cordera warmer, colder, or the same temperature as Hillsdale? Explain using wrods energy level, temperature, current
Answer:
Cordera is colder than Hillsdale.
Explanation:
They may be at a similar latitude. But you also have to consider the currents nearby the location.
The prevailing wind closer to the equator which carries warm current hits Hillsdale which is why it follows the coastline of the continent. However, for Cordera prevailing winds carrying cold currents hits the continent and follows or hits the coastline of Cordera.
Calculate and Convert (Due Tonight Please Help)
Sorry but I really need these points I just need 5 more sorrrryyy
What is the pH of sulfuric acid?
Explanation:
0.3,1.2, or 2.1. sorry if it's wrong.
Please help me on this one. Thanks
Answer:
Option BExplanation:
Look here,
2H2 + O2. --> 2H2O
On,
LHS = 2 × H2 = 4H atoms and 2O atoms
RHS = 2 × H2 = 4H atoms and 2 × O = 2O atoms
Hence,
LHS = RHS and above equation is balanced.
Using spdf notation, what is the electron configuration for a neutral atom of beryllium
Answer:
Beryllium
Explanation:
Consider the reaction described by the following chemical equation.
2 HN3(1) + 2 NO(g) — H2O2(1) + 4 N, (g)
What is the enthalpy change associated with the production of 1 mol of H, O, if a reaction that produces
2.50 g of H, O, releases 65.9 kJ of heat?
Answer:
Q = -897 kJ/mol
Explanation:
From the given information:
The heat released Q = -65.9 kJ
To start with the molar mass of [tex]H_2O_2[/tex] = 2 × (molar mass of H) + 2 × (molar mass of O)
= (2 × 1.008) + (2 × 16.0 )
= 34.016 g/mol
However, given that:
mass of [tex]H_2O_2[/tex] 2.50 g
The number of moles of [tex]H_2O_2[/tex] = [tex]\dfrac{mass}{molar \ mass}[/tex]
[tex]= \dfrac{2.5}{34.016}[/tex]
[tex]= 7.349 \times 10^{-2} \ mol[/tex]
Finally; Using the formula:
[tex]\Delta H = \dfrac{Q}{number \ of \ moles}\\ \\ Q = \dfrac{-65.9 \ kJ}{7.349 \times 10^{-2} \ mol}[/tex]
Q = -897 kJ/mol
Vibrating molecules and atoms are an example of ___________________ energy, which falls into the ______________________ energy category.
True or false when matter changes it’s state it is a physical change because it is the same substance the whole time.
Answer:
true
Explanation:
How much volume will 8.8 moles of gas fill at 0.12 atm at 56*C
Answer:
2000 L
General Formulas and Concepts:
Atomic Structure
MolesTemperature Conversion: K = °C + 273.15Gas Laws
Ideal Gas Law: PV = nRT
P is pressureV is volume (in L)n is number of molesR is gas constantT is temperature (in K)Explanation:
Step 1: Define
[Given] 8.8 moles gas
[Given] 0.12 atm
[Given] 56 °C = 329.15 K
Step 2: Solve for V
Substitute in variables [Ideal Gas Law Formula]: [tex]\displaystyle (0.12 \ atm)V = (8.8 \ mol)(0.0821 \ \frac{L \cdot atm}{mol \cdot K})(329.15 \ K)[/tex]Isolate V: [tex]\displaystyle V = \frac{(8.8 \ mol)(0.0821 \ \frac{L \cdot atm}{mol \cdot K})(329.15 \ K)}{(0.12 \ atm)}[/tex]Multiply/Divide [Cancel out units]: [tex]\displaystyle V = 1981.7 \ L[/tex]Step 3: Check
Follow sig fig rules and round. We are given 2 sig figs.
1981.7 L ≈ 2000 L
2. natakot, nabalisa, naginbal
Answer:
Saan yung tanong?? +?? ++?
How does thermal energy flow as you hold a glass of ice water?
Ametal used in hot water system?
Answer:
Nichrome
Answer: Hot water system coils are commonly made up of metal alloys which are a combination of two or more elements. The most commonly used metal alloy is “Nichrome”. Nichrome is an alloy of nickel (80%) and chromium (20%).
Engineers find a new metal that is stronger than steel.. (so on)
Answer is : D "Collaborate with other engineers in the design of a plane made from this metal".
Answer:
Explanation:
same thing as normal plane. just replace normal metal with this new sick metal :cool:
also make sure it weighs a good amount and won't fall from weight... im confused was this already answered???
Answer:
Collaborate with other engineers in the design of a plane made from this metal
Explanation:
<3
How many grams of aluminum are needed to completely react with
192 g of oxygen gas?
Answer:
4.28g
Explanation:
As a rollercoaster travels upward what type of energy transfer is taking place?A.electrical to thermal energy B.kinetic to potential energy C.mechanical to chemical energy D.potential to kinetic energy
Answer:
B.
Explanation:
How much heat will be transferred when 0.54g of sulfur reacts with 0.54g of oxygen to produce sulfur trioxide according to the following reaction:
2 S + 3 O2 =2 SO3 + 790kJ
Answer:
-4.4 kJ
Explanation:
What would happen if the number of protons were to change in an atom?
Answer: you will change the atom from one element to a different element. Sometimes, when you add a proton to an element, the element will become radioactive. If you change the number of neutrons in an atom, you get an isotope of the same element.
Explanation:
how many molecules are in 2NaO? please someone help i dont know this :')
Answer:
One molecule
Explanation
But there is three different atoms forming this one NaOH. The three atoms are Na, O and H, that is one sodium, one oxygen, and one hydrogen.
define combine gas law
Answer:
The combined gas law combines the three gas laws: Boyle's Law, Charles' Law, and Gay-Lussac's Law. It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant. When Avogadro's law is added to the combined gas law, the ideal gas law results.
Explanation:
Hope this helps
~Bre
Which type of radiation poses the fewest safety issues?
A. Beta
B. Gamma
C. Alpha
D. X-rays
Answer:
C. Alpha
Explanation:
I did it and I got it right
Answer: C. Alpha
Explanation:
1. Currently, California students are in class 240 minutes every day. How many hours is this?
Answer:
4 hours a day
Explanation:
240/60=4
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When 2 moles of Mg3N2 are allowed to react, how many moles of H20 also react?
Mg, Na(s) + 6H20(1)
3Mg(OH)2(s) + 2NH3(g)
1 mole
4 moles
6 moles
8 moles
12 moles
Answer:
12 moles of water (E)
Explanation:
The first step is to see that the equation is balanced. It is now, but you did something strange to the Mg3N2.
Mg3N2(s) + 6H20(l) ======> 3Mg(OH)2(s) + 2NH3(g)
What the equation is telling you is that 1 mol of Mg3N2 requires 6 moles of water for the reaction to occur.
So 2 mols of Mg3N2 would require 6*2 mols of water to react.
The answer is 12 moles of water
How many grams of K2O can be made from 43 g of potassium and 32 g of oxygen from the following
equation?
4K + 02 --> 2K2O
Answer:
51.81g of K2O are produced
Explanation:
Based on the reaction, 4 moles of K reacts per mole of oxygen to produce 2 moles of K2O. To solve this question we must find the moles of each reactant in order to find the limiting reactant. With limiting reactant we can find the moles of K2O produced and its mass:
Moles K -Molar mass: 39.0983g/mol-
43g * (1mol / 39.0983g) = 1.1 moles K
Moles O₂ -Molar mass: 32g/mol-
32g * (1mol / 32g) = 1mol O₂
The moles required for the reaction of 1 mole of O₂ are 4 moles of K. As there are just 1.1 moles, K is the limiting reactant.
The moles and the mass of K2O produced are:
1.1moles K * (2mol K2O / 4mol K) = 0.55 moles K
Molar mass K2O = 94.2g/mol
0.55 moles K * (94.2g / mol) =
51.81g of K2O are producedWhich of the following molecules has a nonlinear structure?
Answer:
SnCl2 is nonlinear due to the presence of lone pair of electrons on the central atom.....