Answer:
80.6 g
Explanation:
MgO=24.3+16=40.3 g
48.6/24.3= 2 moles
64/2x16= 2 moles
2x40.3= 80.6g
1) LIOH + HBr à LIBr + H2O
If you start with 5mol of lithium hydroxide, how many moles of lithium
bromide will be produced?
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.
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
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??
covalent compounds contain
Answer: Covalent compounds have bonds where electrons are shared between atoms. Due to the sharing of electrons, they exhibit characteristic physical properties that include lower melting points and electrical conductivity compared to ionic compounds.
hope this helps!
Explanation:
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
Which of the following is a valid mole ratio from the balanced equation 2C3H6 + 902 - 6CO2 + 6H20? (4 points)
O 1 mol CHE
2 mol CO2
O 6 mol H,
9 mol O2
O 2 mol CHE
6 mol O2
O 3 mol H2O
2 mol CO2
Answer:
6 mol H, 9 mol O2
Explanation:
We can see that in water, there are 6 moles of hydrogen, and for oxygen, there is 9 moles
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
Is carbon Dioxide matter????
Answer:Yes
Explanation: Matter is everything around you.
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
yoo someone help please
Answer: can I suck your super long di ck or titis
Explanation:
Answer:
hi
Explanation:
Explain (not just list) where you observe reflection, refraction, and absorption of light in your everyday activities
Answer:
Reflection: you look in the mirror. Refraction: You put a straw in a glass of water, and it looks like it broke. Absorption: If you have a black sweater and you wear it out in the cold, the black sweater is going to hold in heat better than a lighter sweater because the black sweater absorbs light .
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
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)
Examples of polar molecules
Answer:
Water, Ethonal, Ammonia, Sulfur Dioxide, and hydrogen sulfide.
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
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.
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
Are most elements metals, nonmetals, or metalloids?
Answer:
most elements are metals
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.
What is the speed of a jet that flies 3200 miles in 20 hours?
160 mph
3180 mph
3220 mph
64000 mph
Answer:160
Explanation:3200/20=160
Answer:
about 160 mph
Explanation:
How many minutes are in 180,0 days?
Answer:
259,200 minutes
Explanation:
There are 0.5 moles of carbon, 1 mole of hydrogen, and 0.25 mol of
oxygen. What is the empirical formula of this compound?
Answer:
C₂H₄O
Explanation:
The empirical formula of a compound is defined as the simplest whole number ratio of the atoms present in a molecule. As we have in the molecule Carbon, Hydrogen and Oxygen to find the simplest ratio we need to divide each number of moles in the moles of Oxygen (The lower number). As follows:
C = 0.5mol C / 0.25mol O = 2
H = 1 mol H / 0.25mol O = 4
O = 0.25mol O / 0.25mol O = 1
The empirical formula is:
C₂H₄OPlease help me with this thank you
Give a situation in life when you've experienced resonance.
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
___________ mL = 2.2 L
Answer:
2,200 mL I believe it is.
Answer:
2,200 is the answer of your question
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 does a chemical formula represent a chemical compound?
Answer:
A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements.
Explanation:
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