How many Atoms are in H2COCH? Need asap pleassseee!

Dax has been learning about chemical reactions, and he now understands that chemical reactions occur at different rates. Some ar

patriot [66]

Answer:

concentration
temperature
surface area (for solid reactants ONLY)
pressure (for gaseous reactants ONLY)
catalyst

Explanation:

Concentration- rate of the reaction increases with the increase of concentration of the reactants. More particles per unit volume leads to the frequency of collisions to increase. The number of successful collisions thereby increase and overall, lesser time is needed to complete the reaction (upon a higher concentration)
Temperature- With the increase of temperature, rate of reaction increases. Particles have more kinetic energy and they move faster. Due to this, number of successful collisions increases/number of effective collisions increases. More particles have energy greater than the activation energy and, activation energy can't change. If number of moles are changed, then number of product will vary.
Surface Area- Rate of reaction increases with the increase of surface area of the solid reactant. More particles are exposed to react and the frequency of collisions increases. Less time is needed to complete the reaction and with the decrease of size, surface area increases.
Pressure- Rate of reaction increases with the increase of pressure of the gaseous reactants. Gas molecules are closer/ more particles per unit volume is found. The frequency of collisions increase and number of effective collisions increases.
Catalyst- Substances which can speed up a chemical reaction by lowering the activation energy by creating an alternative route are called catalysts. They take part in a chemical reaction but after the reaction, they remains chemically unchanged. Catalysts can change the value of enthalpy change and increases both forward and backward reaction rates. They can't change the yield of a chemical reaction and can't change the equilibrium composition. (ex: usage of Vanadium (V) Oxide to manufacture sulfuric acid).

7 0

3 years ago

Which of the following is not part of Dalton's atomic theory?

lakkis [162]

I think its A because some scientist from the Department of Physics of Northeastern University found out that is not a part of Dalton's atomic theory.

3 0

4 years ago

Which of the following correctly

goblinko [34]

Answer:

An element is made of one type of atom, while a compound is two or

more types of atoms combined.

Explanation:

An element is a distinct substance that cannot be split up into simpler substances. Elements are substances that consists of only one kind of atom.

Compounds are substances composed of two or more kinds of atoms/elements joined together in a definite grouping.

There are over a hundred elements known to date.
Each one of the elements is symbolized by a capital or a capital letter followed by a small letter derived from English, Latin or Greek
Examples are copper, gold, iron
The properties of a compound are distinct and different from those of the individual elements that are combined in its make up.
There are several millions of compounds known.
They are usually represented by chemical formulae.

As we can see, compounds are indeed made up of more than one types of atoms whereas an element is made up of just one single atom.

8 0

4 years ago

What is the temperature of the mixture formed of 100 g of water with temperature 15c and 250g of water with temperature 50c in a

frez [133]

Hello I am a American person

8 0

4 years ago

What is the overall voltage for a redox reaction with the half-reactions

erica [24]

Answer:is it c 0.80-0.34

hope its right

my bsf told me the answer

Explanation:

5 0

3 years ago