4) What type of reaction is the following?
exothermic
endothermic
not enough information given
Answers
Answer:
Endothermic
Explanation:
Notice that heat is written as part of the reactants. Therefore, heat is necessary for the reaction to proceed.
In other words, the reaction is endothermic.
Conversely, if the heat is written as part of the products, heat is released as the reaction proceeds and hence the reaction is exothermic.
Related Questions
ay tone, if dis molten material pourin from da trade towa is aluminum, den how come dey ain't silva nor like a watery liquid?
Answers
Answer:
can you please type english?Explanation:
PLEASE ANSWER NOW!!!
A train travels 200 miles at an average speed of 50 miles per hour. How long does it take the train to travel this distance?
Answers
Answer:
The answer is 100 m/p/h because you divide the total 200 miles and the 50 speed and you get about 100 m/p/h
Explanation:
how many molecules of nitrogen dioxide are there in 2.00 moles of nitrogen dioxide ? Show steps please!
Answers
Answer:
2 moles of NO₂ contain 12.044 × 10²³ molecules of NO₂
Explanation:
Given data:
Number of moles of NO₂ = 2.00 mol
Number of molecules of NO₂ = ?
Solution:
It will be solve through Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ molecules
2.00 mole NO₂ × 6.022 × 10²³ molecules of NO₂ / 1 mol of NO₂
12.044 × 10²³ molecules of NO₂
Thus, 2 moles of NO₂ contain 12.044 × 10²³ molecules of NO₂ .
What is the vertex of the parabola in the graph?
1
19
6
4
2
X
-6
-2
-2
-4
Answers
Answer:
(-3, -4)
Explanation:
The vertex is the point/dot that is in the middle of the graph. Imagine a vertical invisible line splitting the U in half, equal parts.
In paragraph 2, attraction and repulsion refer to _____.
A electric and magnetic fields
B atomic theories
C tiny particles
D solid atoms
Answers
Answer:
I guess the answer is b.atomic theories
Is SO2 a ionic bond?
Answers
Answer:
Explanation:
So ,SO2 molecules are covalent. ... Covalent is two non-metals sharing electrons while Ionic is a metal and a nonmetal where one takes an electron and changes both of the elements charges for example Nitrogen and Oxygen would be covalent while Iron and Oxygen would be Ionic. So ,SO2 molecules are covalent.
Just like the terrestrial inner planets, which are made of rock and metal, the gas planets have solid surfaces covering mantles and cores.
A. True
B. False
Answers
Answer:
B. False
Explanation:
The gas planets are called so because they are composed of gases and solid materials. Therefore, they cannot have solid surfaces covering mantle and core as they cannot exist.
Explain why as the temperature increases the solubility of solids (increases/decreases).
Answers
Answer:
The increased vibration (kinetic energy) of the solute molecules causes them to be less able to hold together, and thus they dissolve more readily.
Can someone help me with 14-16 fill in the blank
Answers
15.inference
16-invention
In the extraction of iron, carbon monoxide acts as O A catalyst OB an inert gas . an oxidising agent . a reducing agent .
Answers
Answer:
a reducing agent .
Explanation:
In the extraction of iron, carbon monoxide acts as the main reducing agent.
Carbon monoxide is a neutral, colorless and odorless gas. One of the property of carbon monoxide is that it is a powerful reducing agent as it combines with oxygen readily to form CO₂ and hence its use in metallurgy.
A reducing agent is one that undergoes oxidation in a chemical process. The carbon monoxide is produced in the furnace at high temperature. Carbon dioxide combines with carbon to produce carbon monoxide.So, carbon monoxide acts as the main reducing agent.
what is chemicle reaction
Answers
Answer:
a process that involves rearrangement of the molecular or ionic structure of a substance as distinct from a change in physical form or a nuclear reaction
Explanation:
please mark brainlest
Why does dry ice scream when pushed onto metal?
Answers
Answer:
i thought you said dry ice cream
What is the number of neutrons in silicon-30
Answers
Answer:
16 neutrons
Explanation:
how many grams of ice can be melted with 15 j of heat
Answers
Answer: A 15-gram ice cube absorbs 5000 j of heat as it melts
Explanation:
chemical reactions amplify 1.1 pre assessment
Answers
Chemical reactions are the various types of permanent changes which occur in substances and which produce new substances .
What are chemical reactions?Chemical reactions are changes which occur in the arrangement of atoms in a substance resulting in the formation of new substances.
There are many types of chemical reactions such as:
combination reactionsdisplacement reactionsdecomposition reactionsoxidation reactionsdouble displacement reactionsThe various types of chemical reactions that occur contribute to the numerous compounds and substance in existence today.
Learn more about chemical reactions at: https://brainly.com/question/26018275
The change in the free energy of a reaction(ΔG) is equal to
1. TΔH - ΔS
2. TΔH + ΔS
3. ΔH - TΔS
4. ΔH + TΔS
Answers
Answer:
The answer is Third one
HELP ASAPP WILL MARK BRAINLIST
Matter can be measured in many ways for specific purposes. Which measurement depends on the force of gravity and is not a reliable measurement?
A. Mass
B. Weight
C. Volume
D. Temperature
Answers
Answer:
A. Mass
Explanation:
Mass because ,mass is not a reliable measurement unlike the other ones.
Explain all of the conversations of kinetic and potential energy from point A to D.
Answers
Potential energy (PE)= mass• gravitational acceleration • hight
KE depends on the velocity and PE on the hight.
The picture is not clear so I will assume that at point (A) the velocity = 0
So there is no KE , all the energy in the PE form
At point (B), the hight is not = 0 so there is PE. Also the object will have a velocity so there is KE
Similarly with c and d
Hope this helps.
Choose the answer that best describes how Mount Everest and Death Valley differ. Mount Everest is flat, and Death Valley is the highest point on Earth. Mount Everest is the highest point on Earth, and Death Valley is a smaller mountain. Mount Everest is the highest point on Earth, and Death Valley is relatively flat.
Answers
Answer:
Mount Everest is the highest point on Earth, and Death Valley is relatively flat.
Explanation:
Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. It is one of the hottest places on Earth, along with deserts in the Middle East and the Sahara, Mount Everest is Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border runs across its summit point.
Answer:
Last one
Explanation:
How do reactants and products participate in a chemical reaction?
A. One reactant and one product react to form a new reactant and a new product.
B. The reactants are compounds that react to form new compounds (the products).
C. The products react with each other to form new compounds (the reactants).
D. A product is broken down in a chemical reaction to form reactants.
Answers
Answer:
B. The reactants are compounds that react to form new compounds (the products).
Explanation:
yessirski what he said is what im doing. Thanks, guys! #BrainlyPremium
true or false Cyclic electron transport is different from noncyclic electron transport in that cyclic electron transport produces NADPH
Answers
Answer:
true im sorry if im wrong
Explanation:
Which alcohol is used to manufacture formaldehyde? Write it’s names .
Answers
Answer:
Acetyldehyde
Explanation:
It's a functional group essential for making alcohol and other products
Methanol (CH₃OH) is used to manufacture formaldehyde.
What is formaldehyde?Formaldehyde can be described as a naturally occurring organic compound with the formula CH₂O and structure H-CHO. Pure Formaldehyde is a pungent, colorless gas that polymerizes spontaneously into paraformaldehyde. Formaldehyde is the simplest of aldehydes (R-CHO).
Formaldehyde is a colorless gas with a pungent, irritating odor. This gas is stable at about 150 °C but it can polymerize when condensed to a liquid.
Formaldehyde can be produced industrially by the oxidation of methanol. The common catalysts are iron(III) oxide, silver metal, iron-molybdenum oxides, or vanadium oxides.
2 CH₃OH + O₂ → 2 CH₂O + 2 H₂O
The silver-based catalyst works at a temperature of about 650 °C. Two chemical reactions on it produce formaldehyde simultaneously:
CH₃OH → CH₂O + H₂
In principle, formaldehyde can be generated by the oxidation of methane, but it is not industrially viable as methanol is more easily oxidized than methane.
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The molar mass of an element is numerically equal to:.
Answers
Answer:
the molar mass of an element is numerically equal to atomic mass in grams-
what is the percent composition of sulfur in FeSO4
Answers
Answer:
36.8%
Explanation:
Ferrous sulfate has the composition 36.8% Fe, 21.1% S and 42.1% O.
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How do invertebrates affect the oxygen levels of compost and soil?.
Answers
Invertebrates affect the oxygen levels of compost and soil by reducing it.
How respiration works?Cellular respiration is the process by which living organisms obtain energy by breaking down food molecules in their cells.
Every living organism undergoes the process of cellular respiration and make use of oxygen molecules in the process.
This means that invertebrates will make use of the oxygen gas present in compost and the soil for respiration, hereby reducing it.
Learn more about respiration at: https://brainly.com/question/480297
Answer: Burrows create spaces for oxygen to flow through the soil.
Explanation:
I just took the test
8.5C (H)
5. An element in the Periodic Table has
three orbitals in its electron cloud and
two electrons in the outer orbital.
What element is this?
A Boron
B Calcium
C Lithium
D Magnesium
Answers
Answer:
Boron.
Explanation:
19. Which of the following is NOT a function of proteins?
a. provides structural support for cells
b. long term energy storage
c. speeds up reactions
d. movement and transportation
Answers
Review the mass and size of an atom. A typical hydrogen atom, for example, has
a mass of 1.66 x 102 g. Imagine how big a number we would need to describe
Х
the number of atoms in a real-life sample of an element. Could we somehow
measure or handle a dozen or a ream of atoms?
Answers
Answer:
4moles of Fe reacts =2moles of Fe2O38moles of Fe reacts=x moles of Fe2O3cross multiply4★X=8★2X=16/4X=4Explanation:
4 moles of measure or handle a dozen or a ream of atoms.
What is Hydrogen atoms?An atom of the chemical element hydrogen is known as a hydrogen atom. The Coulomb force holds a single positively charged proton and a single negatively charged electron to the nucleus of the electrically neutral atom.
Isolated hydrogen atoms, often known as "atomic hydrogen," are highly uncommon in normal life on Earth. In contrast, a hydrogen atom usually joins forces with other atoms to form compounds or with another hydrogen atom to generate common (diatomic) hydrogen gas, H2.
In everyday English, the terms "atomic hydrogen" and "hydrogen atom" have similar but distinct meanings. A water molecule, for instance, has two hydrogen atoms but no atomic hydrogen (which would refer to isolated hydrogen atoms).
Therefore, 4 moles of measure or handle a dozen or a ream of atoms.
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Which elements can be found in SiCl4?
O sulfur and chlorine
O silicon and chloride
sulfur and chloride
silicon and chlorine
Answers
Why are bacterial DNA gyrase and topoisomerase good targets for antimicrobial drugs?
These enzymes are responsible for host cell recognition, so targeting them would prevent the host cell from being infected.
These enzymes are involved in energy production, so targeting them would prevent the bacteria from obtaining necessary energy.
These enzymes are not necessary for DNA replication.
These enzymes are different from their eukaryotic counterparts, so the drugs targeting them should not affect the host..
Answers
Answer:
These enzymes are involved in energy production, so targeting them would prevent the bacteria from obtaining necessary energy.
Explanation:
hope this helps