CHEMISTRY HIGH SCHOOL

Andy is waiting at the signal. As soon as the light turns green, he accelerates his car at a uniform rate of 8.00 meters/second2. What is the displacement of Andy’s car after 30.0 seconds?A.
1200 meters
B.
2400 meters
C.
3600 meters
D.
4800 meters
E.
7200 meters

Answers

Answer 1
Answer: The answer is B
8m/s
Your going to multiply 8 and 30 together which gives you 240.

Related Questions

In terms of energy and entropy, systems in nature tend to undergo changes toward(1) higher energy and higher entropy(2) higher energy and lower entropy(3) lower energy and higher entropy(4) lower energy and lower entropy
Every action produces an equal and opposite -- ---------- when one object exterts a force on another object,the second object pushes back with the same amount of--------- someone knows the answer​
A substance whose shape can easily change is aa. solid. b. powder. c. fluid. d. metal.
Which of the following is not one of the three largest sources of materials needed to form carbon compounds?natural gas petroleum coal wood
State the use of multimeters

Formic acid, HCOOH, is a weak electrolyte what solutes are present in an aqueous solution of this compound write the chemical equation for the ionization of HCOOH

Answers

Answer:

Explanation:

Formic acid (HCOOH) is a weak electrolyte when dissolved in water. In an aqueous solution of formic acid, it partially ionizes into its constituent ions. The solutes present in this solution are the ions produced during ionization.

The chemical equation for the ionization of formic acid (HCOOH) in water is as follows:

HCOOH (aq) ⇌ H⁺ (aq) + HCOO⁻ (aq)

In this equation:

HCOOH represents formic acid molecules.

H⁺ represents the hydrogen ions (protons) that are formed when a molecule of formic acid loses a hydrogen ion (H⁺).

HCOO⁻ represents the formate ion, which is the conjugate base formed when a molecule of formic acid donates a hydrogen ion (H⁺).

Since formic acid only partially ionizes in water, not all molecules of formic acid dissociate into ions. This is why it is considered a weak electrolyte.

Which one of the following equations is not balanced?6H2O + 6CO2 ---> C6H12O6 + 6O2
C7H16 + 11O2 ---> 7CO2 + 8H2O
PCl2 + 4H2O --->H3PO4 + 5HCL
Fe3O4 + 4H2 ---> 3Fe + 4H2O

Answers

The key inthe balancing of chemical reaction is to make sure that you got the exactchemical formula of the substance that is reacting and the yielded product.After getting the formula, identify first the hardest element/atom to bebalanced such as Na, Zn, Cl, C, O, etc. Then proceed to the easier ones such asO, H. Make sure to note the atoms present in the molecule of the substance. Amongthe three equations, PCl2 + 4H2O --->H3PO4 + 5HCL is not balanced. Thehardest element here is the Cl. Observe that there are 5Cls in the product sideso you must add 5 to the PCl2. However, there are only 2Cl atoms and it needs3 to balance the equation. Also, there is no P in the product side. This equationis invalid.
The third one is incorrectly balance because the are only two chlorine on the reactant side and five on the product side. The correct balanced equation is 2PCL2 + 8H2O -> 2H3PO4 + 5H2 + 4Cl. The reason HCl is broken into two parts is because it is a strong acid and would immediately dissolve if put together.

If 31.8 grams of LiCl are dissolved in 225 grams of water, what is the concentration of the solution in percent by mass?

Answers

Percent by can be calculated by dividing the amount of solute by the total grams of the solution to be made so the sum of water and the amount solute. We calculate as follows:

% by mass = 31.8 g LiCl / 225 g water + 31.8 g LiCl x 100%
% by mass = 12.38%

Observe the nature changing around your home. You can observe plants, animals, and parts of your actual home as you begin to notice changes in matter. Collect data for two examples of changes in matter. Use the Changes in Matter observation questions to determine if your examples are physical or chemical changes.Your answer should include two examples, the types of changes observed, and evidence of how the examples were formed. You can use this format:

Example 1:

Type of Change:

Evidence:

Answers

Answer:

Example 1. One change I observed was when cooking, I needed to boil water. The water was later evaporated due to the increase of heat from the stove below the pot. Heat traveled and transferred from the stove to the pot then the water. This change is from liquid to gas.

Example 2. I was mixing sugar into my tea, the sugar dissolved into the tea. This is an example of dissolving a solid into a liquid. The tea took the properties of the sugar and turned the drink sweet.

Extra, taking a hot shower and steam leaves the shower. This change is of evaporation.

Explanation:

Hope this helps, even though it was late! <3 :)

if you have 3.50 moles of hydrogen and 5.00moles of nitrogen to produce ammonia, witch element is the reactant in excess? 3H2+N2=2NH3

Answers

Given 3.50 moles of hydrogen and 5.00 moles of nitrogen to produce ammonia, nitrogen is the excess reactant.

What is the excess reactant?

The excess reactant is the reactant in a chemical reaction with a greater amount than necessary to react completely with the limiting reactant.

  • Step 1: Write the balanced equation.

3 H₂ + N₂ ⇒ 2 NH₃

  • Step 2: Establish the theoretical ratio.

The theoretical ratio (TR) of H₂ to N₂ is 3:1.

  • Step 3: Establish the experimental ratio.

The experimental ratio (ER) of H₂ to N₂ is 3.50:5.00 = 0.70:1.

  • Step 4: Determine the excess reactant.

Comparing TR and ER, we can realize that there is not enough hydrogen to react with the nitrogen. Thus, nitrogen is the excess reactant.

Given 3.50 moles of hydrogen and 5.00 moles of nitrogen to produce ammonia, nitrogen is the excess reactant.

Learn more about excess reactant here: brainly.com/question/17199947

Answer : The N_2 element is the reactant in excess.

Solution :  Given,

Moles of N_2 = 5 moles

Moles of H_2 = 3.50 moles

The balanced chemical reaction is,

3H_2(g)+N_2(g)\rightarrow 2NH_3(g)

From the balanced reaction we conclude that

As, 3 moles of H_2 react with 1 mole of N_2

So, 3.5 moles of H_2 react with (3.5)/(3)=1.16 moles of N_2

The excess of N_2 = 5 - 1.16 = 3.84 moles

That means in the given balanced reaction, H_2 is a limiting reagent because it limits the formation of products and N_2 is an excess reagent.

Hence, the N_2 element is the reactant in excess.

Why does a high temperature have to be used to weld pieces of metal together

Answers

because of the metling point of metals, it is difficult to just simply put metal together and have them to stay together without any type of glue or epoxy based creams.

wielding is used to melt the surface or even change the compound completely so they are able to combine with other metals.

same thing with atoms, you need a lot of heat, and speed to simply make salt or even copper because of the elements not really being favorable of each other.

Other Questions
He conjugate pair for a weak acid is--
Which of the following have the most similar properties?A. Sodium and Magnesium B. Carbon and Silicon C. Argon and Chlorine D. Potassium and CalciumI need help Plz. ASAP
Which formula represents a saturated hydrocarbon
Highlight the basic points in Lewis and Langmuir theory of electrovalency