Answer:
1,354
Explanation:
1) LIOH + HBr à LIBr + H2O
If you start with 5mol of lithium hydroxide, how many moles of lithium
bromide will be produced?
Please help! I really need help on this!
Answer:
I wanna say c
Explanation:
It makes the most sense, because non-metals don't produce an electrical current, and therefore aren't conductors.
2. Clouds are
(a) tiny drops of water floating in air.
(b) mixture of dust and water vapour.
(c) particles of water vapour.
(d) rain drops in air.
3. Floods cause extensive damage to
(a) crops.
(b) property and human life.
(c) domestic animals.
(d) all of the above.
4. “Catch water where it falls” is the basic idea behind
(a) Recycling of water.
(b) Making dams to store water.
(c) Rain water harvesting.
(d) Condensation of water vapour.
5. In which of the following case evaporation of water will be slowest?
(a) A tray of water kept in sunlight.
(b) A kettle of water kept on a burner.
(c) A glass of water kept in a room.
(d) A bucket of water kept on rooftop.
Answer:
2 b
3d
4c
5c
Explanation:
please give brainlest
What does the MC1R gene code for
Answer:
The MC1R gene provides instructions for making a protein called the melanocortin 1 receptor. This receptor plays an important role in normal pigmentation. The receptor is primarily located on the surface of melanocytes, which are specialized cells that produce a pigment called melanin.
Explanation:
#hope this help
How many grams of carbon are there in 100 g of carbon dioxide? Show your work.
Answer:
200 I would think..
Explanation:
Feel free to correct me if i'm wrong
Is there any multiple choice??
I really need the help in anyway...
Answer:
What substance changed physically under all three condition? Copper Wire
What substance changed chemically under all three condition? Steel Wool
What evidence indicates a chemical reaction is occurring? New gases are produced; A phase change has occurred; A color change
Select the three answers that are examples of a chemical reaction. The mixing of an acid and base shows an increase in temperature; after baking bread there is a new odor or smell; when hair is bleached it changes to a lighter color
Which data supports this inference? Baking soda dissolving; A gas formed, creating bubbles
Which experiment best shows evidence of energy being released in a chemical reaction? Heat and light are given off when paper is burned
Which experiment likely resulted in the formation of a precipitate? Two solutions are mixed together and a yellow solid forms
The BEST evidence for a chemical reaction is the formation of a new substance.
Explanation:
2. When heat and light are being given off, energy is being released. Paper burning is a chemical reaction b/c when paper is burnt, it is a new substance and the act can't be undone.
3. When a yellow solid forms, that solid is the participate.
4. You will for sure have a chemical reaction if a new substance is created.
5. Copper wire changed physically b/c the copper wire can be returned to its original condition in all of these situations and no new substance was formed. Steel Wool changed chemically b/c it can't be returned to its original state under any condition and new substances were formed every time.
6. New substances formed indicate a chemical reaction. A color change also is an indication of a chemical reaction.
7. When a substance can't be turned into its original position or a new substance is produced, a chemical reaction occurred.
How would you improve your experiment?
answer in 3 to 4 sentence
Answer:i will improve my my experiment by:
1.increasing the validity of that experiment
2.Improving of measurwment techniques
3.reduction of the simple bias
4.Blinding of the experiment
Explanation:
These can be achieved by doing these respectively,
1.Through considering the given time frame feo data collection and the experimental treat
2.Done by ensuring vessels are properly clibrated, are clean and ready to use as well as functioning
3.We can avoid this by doing convenience sampling and again ensuring target population arw properly defined.
4.we can avoid this by alerting the group members on the available group assignments and the data collectors.
1.25 x 10^12 molecules H2SO4 to moles
2.08 × 10⁻¹² mol H₂SO₄
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
1.25 × 10¹² molecules H₂SO₄
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: [tex]\displaystyle 1.25 \cdot 10^{12} \ molecules \ H_2SO_4(\frac{1 \ mol \ H_2SO_4}{6.022 \cdot 10^{23} \ molecules \ H_2SO_4})[/tex]Multiply/Divide: [tex]\displaystyle 2.07572 \cdot 10^{-12} \ moles \ H_2SO_4[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
2.07572 × 10⁻¹² mol H₂SO₄ ≈ 2.08 × 10⁻¹² mol H₂SO₄
How are seasons different North & South of the equator
Answer:
seasons experienced by the northern and southern hemisphere always differ by six months when it is summer in the northern hemisphere, it is winter in the southern hemisphere
Explanation:
Answer:
ohhhhhhh she -he was having a point
The melting of a glacier is an example of the interactions among which of Earth's spheres? geosphere, troposphere, cryosphere atmosphere, geosphere, cryosphere atmosphere, asthenosphere, biosphere hydrosphere, asthenosphere, atmosphere
Answer:
The melting of a glacier is an example of interaction among;
Hydrosphere, asthenosphere, atmosphere
Explanation:
The melting of a glacier is an example of the interactions among the Earth's cryosphere and hydrosphere
The cryosphere is described as the portions on Earth where water appears in solid (frozen) form such as glaciers, frozen grounds, snow covered land, sea ice, ice sheets, river ice, ice caps, etc.
The hydrosphere is all the forms water on a planet including, ice, liquid water and water vapor, therefore, the cryosphere is a part of the hydrosphere
The geosphere comprises the Earth's interior, including the asthenosphere, which is fluid and hot and therefore spread heat through both conduction and convection to the hydrosphere that raises the ocean temperatures and lead to glacier melting
The green house effect in the atmosphere results in global warming that raises the average temperature of the Earth which in turn raises the temperature of the oceans and the troposphere, resulting in melting of a glacier
Therefore, the melting of a glacier is an example of interaction among the hydrosphere, asthenosphere, and, atmosphere
18. The mass of a metal ring is 116 g. You fill a graduated cylinder with 15 mL of
water and drop the ring into the cylinder. The water level rises to the 26 mL mark.
Which of the following could be the composition of the object?
Metal Composition Density (g/cm)
Silver
10.5
8.
Rhodium
12.41
Gold
19.32
Platinum
21.5
A
C
D.
19. Which of the following is an example of a chemical change?
1 The bread starts to rise in the oven.
II The egg white starts to turn into an opaque solid on the frying pan
III Steam from the shower starts to condense on the bathroom mirror.
A. I and II only
C. II and III only
B. I and III only
D. I, II, and III
20. Which of the following is an example of a physical change?
A. The silver ring is starting to tarnish.
B. The antacid helps calm your stomach.
C. A clump of clay is moulded into a bowl.
D. Milk goes sour when it is left out for days.
18 B 19 C and 20 A
cuz that's it I hope it helps you
Write a summary paragraph explaining limiting and excess reactants and how you can tell which is which.
Will mark as Brainliest if it's correct and if it's not copied and pasted from the internet :)
How many moles are there in 3.9 grams of potassium
Answer:
0.0997485824191857
Explanation:
Potassium in 1 mol is 39.0983.
Divide 3.9 by 39.0983.
Name the bond between atoms that share electrons
What is a molecule
Give five examples of molecular elements
Draw a diagram to show the bonding in
Carbon dioxide Methan
hydrogen chlorine
Answer:
1) Covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons.
2)A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.
3)Hydrogen (H2), oxygen (O2), and chlorine (Cl2) molecules, for example, each contains two atoms. Another form of oxygen, ozone (O3), has three atoms, and sulfur (S8) has eight atoms. All elemental molecules are made of atoms of a single element.
Explanation:
PLEASE MARK ME AS BRAINLIEST
What is the mass of 8.03 mole of NH3? (NH3 is 17g/mol)
Answer:
the mass of 8.03 mole of NH3 is 136.51 g
Explanation:
The computation of the mass is shown below:
As we know that
Mass = number of moles × molar mass
= 8.03 mol × 17 g/mol
= 136.51 g
Hence, the mass of 8.03 mole of NH3 is 136.51 g
We simply multiplied the number of moles with the molar mass so that the mass could come
is CuO a covalent or ionic bond?
The electronegativity is less than 1.7, which would make it a covalent bond. But I am still not sure..
Answer:
it would be ionic
copper forms a cation and oxygen forms an anion
those charges represent the e-s that are transferred during bonding
oxygen is -2 so will accept 2 e-s to achieve noble gas configuration
Explanation:
In the above figure, what type of bond is formed?
metallic
ionic
covalent
nonpolar
Answer:
It is an covalent bond.
Explanation: The bond is covalent because all the dots are equaled to each other therefore creating a stable bond. When the bonded atoms have a lower total energy than that of widely separated atoms, a covalent bond forms. The electrons are not moved from one atom to the other in polar covalent bonds, such as that between hydrogen and oxygen atoms, as they are in an ionic bond.
___________ mL = 2.2 L
Answer:
2,200 mL I believe it is.
Answer:
2,200 is the answer of your question
For each problem listed in Column A, select from Column B the letter of the conversion factor that is needed to solve the problem. You may need to use more than one conversion factor to solve the problem.
kdjwsnakjNAdskjndkjnknjfdskjnfjkngdjknfjkgskjdgjkndfsjknd
Examples of polar molecules
Answer:
Water, Ethonal, Ammonia, Sulfur Dioxide, and hydrogen sulfide.
Urgent!
which element do you think has a greater mass? cadmium or zinc?
Answer:
zinc
Explanation:
Answer:
cadmium has a greater mass.
explanation:
zincs mass: 65.38
cadmiums mass: 112.411
CAN y’all please help me ASAP with these questions :)
Answer:
1. Force
2. contact force
3. non-contact force
4. magnetism
5. strength and direction
6. length, direction
7. newtons
Explanation:
You're welcome <3
A fluid is a liquid or a(n) _____.
Answer:
gas...............................
yoo someone help please
Answer: can I suck your super long di ck or titis
Explanation:
Answer:
hi
Explanation:
Which is a mixture
H20
Salad
Table salt
Answer:
salad is a mixture this is the answer of the question
please mark ne has a brainliest
In the USA 3.5 millions pounds of whole milk are used daily to make milk chocolate how many gallons of milk are used daily
Answer:
0.4193924945 million
Explanation:
3.5(0.119826427)
How many minutes are in 180,0 days?
Answer:
259,200 minutes
Explanation:
What is the mass of 3.00x10^23 particles of water? Water has a molar mass of 18.0 g/mol.
8.97 g H₂O
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
3.00 × 10²³ particles H₂O
Step 2: Identify Conversions
Avogadro's Number
[Given] Molar Mass of H₂O - 18.0 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 3.00 \cdot 10^{23} \ particles \ H_2O(\frac{1 \ mol \ H_2O}{6.022 \cdot 10^{23} \ particles \ H_2O})(\frac{18.0 \ g \ H_2O}{1 \ mol \ H_2O})[/tex]Multiply/Divide: [tex]\displaystyle 8.96712 \ g \ H_2O[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
8.96712 g H₂O ≈ 8.97 g H₂O
Help me pls ,what is this
less
Explanation:
Because the strawberries are going to become liquid l
Which item is most likely to dissolve faster in water. A sugar cubes. B powdered sugar pls helpp
Answer:
Powdered sugar , it has much more surface area for the state change to occur over
Explanation:
I hope this helps.
