Chemistry High School

plz answer soon need answer
when talking about sodium carbonate reaction as the amount of surface area increases what happens to the rate of this reaction????
rate is faster
rate is slower
rate stays same​

Answers

Answer 1

Answer:

rate is faster

Explanation:

the rate of reaction increases.

Answer 2

Answer:

The rate is faster

Explanation:

just did it on edg :)

Related Questions

How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/g°C?

Answers

Answer:

0.90 degree C

Explanation:

The key to this problem lies with aluminium's specific heat, which as you know tells you how much heat is needed in order to increase the temperature of  1 g of a given substance by 1∘C

In your case, aluminium is said to have a specific heat of

0.90 J g∘ C.

True or False? Nitrogen can get back into the atmosphere when dead plants and animals are decomposed by bacteria. The bacteria break down the larger molecules into smaller ones including nitrates, ammonia, and ultimately N2. True or Fralse

Answers

Answer: True

Explanation:

Answer:

idkkkkkkkklkllkkkkkkkkkkkkkk

Which of the following is true about matter?

Answers

Answer:

Full question plssssss what should we find

full question so I can help you please

What do a hypothesis and scientific law?

Answers

Answer:

If you mean "What is a hypothesis and the scientific law?" than hypothesis means a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation and scientific laws or laws of science, are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. The term law has diverse usage in many cases across all fields of natural science.

Answer:

If you mean "What do hypothesis and scientific law have in common" than a hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept.

A graduated cylinder is placed on an electronic balance, and the scale reads 78.32 g. 10.0mL of glycerine are added, and the scale reads 91.78 g. What is the density of glycerine

Answers

Answer:

1.346 g/mL

Explanation:

The density is defined as the mass of a substance per unit of volume.

In the problem, you add 10.0mL of glycerine. the mass change from 78.32g to 91.78g. The difference is the mass of the glycerine:

Mass glycerine: 91.78g - 78.32g = 13.46g

As the volume added was 10.0mL, the density, δ, in g/mL is:

δ =13.46g / 10.0mL =

1.346 g/mL

WILL MARK BRAINLIEST

7. When the numbers 5.56 x 10^2 and 3.81 x 10^3 are added the result is:
a) 4.36 x 10^3
b) 4.366 x 10^3
c) 4.366 x 10^2
d) 4.37 x 10^3

Answers

Answer:

option b

Explanation:

556+3810

=4366

=4.366*10^3

Hope it helps

Pls mark as brainliest

How does the control group differ from the experimental group? Choose all the correct options.
A The control group contains more than one experimental variable
B
The control group is used as a standard to compare results to, but the experimental group is not
c The experimental group is used as a standard to compare results to, but the control group is not
D The control group is not tested or measured
E The control group does not contain the experimental variable, but the experimental group does.
F The control group does contain the experimental variable, but the experimental group does not

Answers

Answer:

B,D,E

Explanation:

The answer is B,D,E those are the correct options.

Jessica poured a liquid into the graduated cylinder below. What is the volume of the liquid?

Answers

Need more info to answer the question

Answer:

Answer is B

Explanation:

How many sig figs are in:
0.0058096

Answers

There are 5 sigfigs in that number

plz tell me I will also give brainiest. forces can be ________ or unbalanced ​

Answers

Answer:

balanced

Explanation:

hope this helps

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{ \: Balanced}}}}}[/tex]

Explanation:

Forces can be balanced or unbalanced.

[tex] \bigstar {\sf{ \: \: Balanced \: force}}[/tex]

When a number of forces acting on a body do not change its state of rest or uniform motion in a straight line , the forces are said to be balanced forces. For example : In the game of tug of war, two teams pull a rope in opposite directions. When the two teams exert equal and opposite forces on the rope, the rope remains steady and does not move in any direction. It appears as if no force is acting on the rope. Thus, the two forces acting on the rope in this case are balanced forces.

[tex] \bigstar{ \sf{ \: Unbalanced \: force}}[/tex]

When a number of forces acting on a body change it's state of rest or uniform motion in a straight line, the forces are said to be unbalanced forces. For example, if we push a toy car towards east, it moves towards east. If it is pushed towards west, it moves towards west. This unbalanced force produces motion.

Hope I helped!

Best regards! :D

~TheAnimeGirl

The anther of flower contains​

Answers

Answer:

here is your answer please mark me as brainlist

Explanation:

Answer # Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.

A balloon has a volume of 10,500 liters, and the temperature is 15°C. If the temperature were -25°C, what would the volume of the balloon be?

12,194 L
9,042 L

Answers

Answer: 12,194 L

Explanation:

Is the equation above balanced or unbalanced? Explain? Worth 55 points.

Answers

Answer:

For me, it is balanced

Explanation:

Because the amount of element Zn reaction is equal the production. Also as the amount of Hydrogen and Chloride in the reaction and the production are equal.

Balanced even though it is formed differently on each side they are the same. When counting the coefficient in front of it they are still the same.

(01.04 MC)
Describe two distinct ways in which the skin could help cool the body on a hot day. (5 points

Answers

i turned in this exact assignment today haha

the blood vessels dilate to draw body heat away from the body and towards the surface of the skin
sweat glands release sweat, when sweat evaporates it releases heat

Please Help!!! Time LImit. Extra Points and Brainiest.
Acids are a group of molecules with similar physical and chemical properties. Acids react with metal, but vegetable oil does not. What can you infer from this observation? Choose the two statements that apply.
A. The combination of atoms in acids and oil result in very different properties.
B. Acids and oil have different properties because they have different shapes.
C. The atoms present in molecules affect their properties.
D. Vegetable oil is most likely some type of acid.

Answers

Answer:

A and D

Explanation:

SHOW YOUR WORK!!!!!!!!!!!!!!!
An experiment performed to determine the density of lead yields a value of 10.95 g/cm3. The accepted value for the density of lead is 11.342 g/cm3. Find the percent error.

Answers

Answer:

3.45618%

Explanation:

Percent Error = measured value - accepted value/ accepted value x 100

Measured Value: 10.95

Accepted Value: 11.342

Work:

[tex]\frac{10.95-11.342}{11.342} *100[/tex]

[tex]\frac{-0.392}{11.342} *100[/tex] = -3.45618

You cannot have a negative percentage. Therefore the answer is 3.45618%

why is it important to conduct scientific tests more than one time

Answers

Answer:

you man get different results

A
is a changeable factor in an experiment.
O THEORY
O LAW
O HYPOTHESIS
O CONTROL
O VARIABLE

Answers

Answer:

Variable is a changebale factor in an experiment.

Explanation:

Answer: O VARIABLE

Explanation:

can someone help me please

Answers

Answer:

A

Explanation:

the circles are more tightly packed together in box A than in box B in the same amount of space

A 20 N net force acts on an object with a mass of 2.0 kg. What is the object's acceleration? (PLS HELP lol)

Answers

Explanation:

Force = Mass × Acceleration

20 = 2.0 × A

A = 20/2 = 10m/s^2

calculate the mass of 3.011×10^24 molecules of water​...................... plzz i need it asap plzz help me plzz

Answers

Answer:

90.10 g

Explanation:

Step 1: Given data

Number of molecules of water: 3.011 × 10²⁴ molecules

Step 2: Calculate the moles corresponding to 3.011 × 10²⁴ molecules of water

We will use Avogadro's number: there are 6.022 × 10²³ molecules of water in 1 mole of molecules of water.

3.011 × 10²⁴ molecules × (1 mol/6.022 × 10²³ molecules) = 5.000 mol

Step 3: Calculate the mass corresponding to 5.000 moles of water

The molar mass of water is 18.02 g/mol.

5.000 mol × 18.02 g/mol = 90.10 g

A student walks 8 km in 30 minutes. What is the student’s average speed in km/h?

Answers

Answer:

16 km per hour

Explanation:

I hope this helped.

Given 1 cm3 = 1 mL
A box has dimensions 2.0 cm x 4.0 cm x 8.0 cm.

Answers

Answer: 64

Explanation:

you just multiple the 3 numbers to get the answer (i’m in chemistry and just did this question lol)

Using the periodic table, complete the table to describe each atom. Type in your answers
A
B
C
D
E
F

Answers

Answer:

A. 20 B.40 C. Ca D. 10 E. 9 F. F

Explanation:

Answer:

A.) 20

B.) 40

C.) Ca

D.) 10

E.) 9

F.) F

Explanation:

just did it on edge 2020 & got it correct....

Question 3
A milkman adds a very small amount of baking soda to fresh milk.
(a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline?​

Answers

Answer:

Curd is acidic in nature, because an acidic substance has less value of pH. A milkman adds a very small amount of baking soda to fresh milk. Why does he shift the pH of the fresh milk from 6 to slightly alkaline? Answer: By making the milk more alkaline, it takes more time to turn into curd.

What is the difference between a continuous spectrum with an emission line spectrum?

Answers

Answer: A Continuous spectrum is a spectrum that has all wavelengths with no gaps over a wide range. An Emission spectrum is when an electron in an excited state moves to a lower energy level, it emits a certain amount of energy as photons.

I found this information off of a site called “socratic.org.” I hope i could help!

18 grams
4 kilograms
8 kilograms

Answers

Answer:

1 18 grams

2 500g

4 960 grams

5 7 kilograms

Please please help :(

Answers

Answer: ¹²₅C

Explanation:

¹²₅C is incorrect. The superscript is the atomic mass. This varies between each element. The subscript is the atomic number. This doesn't change. You will see every element has the correct atomic atomic number except for Carbon. Carbon should have atomic number 6.

In what circumstance would the complete and net ionic equations for a reaction be identical?

Answers

Answer: Complete ionic equations dissociate all aqueous solutions into ions. Net ionic equations show the change that occurs in chemical reactions and do not show spectator ions that are the same in reactants and products. (b) If no spectator ions were present then complete and net ionic equations would be identical.

Explanation:

All elements on the periodic table of elements are

Answers

First 30

Hydrogen

Helium

Lithium

Beryllium

Boron

Carbon

Nitrogen

Oxygen

Fluorine

Neon

Sodium

Magnesium

Aluminum

Silicon

Phosphorus

Sulfur

Chlorine

Argon

Potassium

Calcium

Scandium

Titanium

Vanadium

Chromium

Manganese

Iron              

Cobalt

Nickel

Copper

Zinc  

75

Answer:

The rest after that first 30.

Explanation:

Gallium

Germanium

Arsenic

Selenium

Bromine

Krypton

Rubidium

Strontium

Yttrium

Niobium

Molybdenum

Technetium

Ruthenium

Rhodium

Palladium

Silver

Cadmium

Indium

Tin

Antimony

Tellurium

Iodine

Xenon

Cesium

Barium

Lanthanum

Cerium

Praseodymium

Neodymium

Promethium

Samarium

Europium

Gadolinium

Terbium

Dysprosium

Holmium

Erbium

Thulium

Ytterbium

Lutetium

Hafnium

Tantalum

Tungsten

Rhenium

Osmium

Iridium

Platinum

Gold

Mercury

Thallium

Lead

Bismuth

Polonium

Astatine

Radon

Francium

Radium

Actinium

Thorium

Protactinium

Uranium

Neptunium

Plutonium

Americium

Curium

Berkelium

Californium

Einsteinium

Fermium

Mendelevium

Nobelium

Lawrencium

Rutherfordium

Dubnium

Seaborgium

Bohrium

Hassium

Meitnerium

Darmstadtium

Roentgenium

Copernicium

Nihonium

Flerovium

Moscovium

Livermorium

Tennessine

Oganesson

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