Answer:
D
Explanation:
How many grams are in 4.2 X 10^2 moles of bromine?
Answer:
The answer is below:
Explanation:
3355.968
Fill in the blanks
At rest the frog breathes through________
Answer:
a process called predominate?
Answer:
the lining of the mouth
Explanation:
its in their predominate form
After 60 years, how much Strontium-90 remains
A = 10 g
B= 30 g
C = 5 g
D = 20 g
What enzymes Break it down sugar ???
what is hybridization
HYBRIDIZATION:
Hybridization is the idea that atomic orbitals fuse to form newly hybridized orbitals, which in turn, influences molecular geometry and bonding properties. Hybridization is also an expansion of the valence bond theory.Answer:
Hybridization is the idea that atomic orbitals fuse to form newly hybridized orbitals, which in turn, influences molecular geometry and bonding properties. Hybridization is also an expansion of the valence bond theory
0.6 sample an unknown organic acid found in muscle cells is burned in air and found to contain 0.24g of carbon, 0.04g of hydrogen with the rest being oxygen. If the molecular weight of the substance is 90g/mol what is the emperical and molecular formula
Answer:
Molecular formula is, C₃H₆O₃
Empirical formula (with the lowest subscript) → CH₂O
Explanation:
We assume that the organic acid's mass is 0.6 g. We know that, in 0.6 g of compound we have 0.24 g of C and 0.04 g of H, then, we have
(0.6 - 0.24 - 0.04) = 0.32 g of O.
We determine each mol:
0.24 g /12 g/mol = 0.02 mol of C
0.04 g/ 1g/mol = 0.04 mol of H
0.32 g/ 16 g/mol = 0.02 mol of O
1 mol of acid weighs 90 g/mol.
In 0.6 g of acid, we have, (0.6 g / 90g/mol) = 0.0067 moles
Let's find out the formula with rules of three:
0.00667 mol of acid have 0.02 moles of C
1 mol of acid may have (0.02 /0.00667) = 3 mol of C
0.00667 mol of acid have 0.04 moles of H
1 mol of acid may have (0.04 /0.00667) = 6 mol of H
0.00667 mol of acid have 0.02 moles of O
1 mol of acid may have (0.02 /0.00667) = 3 mol of O
Molecular formula is, C₃H₆O₃
We confirm by the molar mass: 12g/mol . 3 + 6 . 1g/mol + 32g/mol . 3 = 90
Empirical formula (with the lowest subscript) → CH₂O
Can someone please help me with the page on the right please
Help me pls ,what is this
less
Explanation:
Because the strawberries are going to become liquid l
Please help me with this question.
Answer:
B or c
Explanation:
It might bee
Imagine a group of hunters kills half of the rabbit population. How will it affect the other organisms?
Answer:
They will die off too
Explanation:
The animals that feed off the rabbits will start to die off from starvation, and so will the animals tho eat off of those. The entire food chain above the rabbits will start to decrease, while the plants and animals that the rabbits eat will increase in population due to less predators.
Name the most abundant compound found in air?
Answer:
The two most abundant compounds in air are the gases carbon dioxide, CO2, and water vapor, H2O
Answer:
Nitrogen
Explanation:
Nitrogen is the most abundant compound found in the air. It accounts for about 78% of the air that we breath. It is closely followed by oxygen that accounts for about 21% of the air.
Describe how visible light is different from non visible light
Answer:
you can see visible light
Explanation:
Answer:
There is no fundamental difference between visible light and invisible light such as radio waves and X rays. They are all electromagnetic waves that differ in only one way: their wavelength. ... Ultraviolet light, X rays, and gamma rays all have shorter wavelengths than visible light.
Explanation:
yeah
ANSWER ASAP THIS IS 6TH GRADE SCIENCE! GIVING BRAINLIEST FIVE STARS ANS A HEART!
Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission.
Answer:
what are you supposed to answer???
Explanation:
Which phase of matter will take the shape of its container?
Answer:
Liquid
Explanation:
All liquids take the shape of the container
How many miles will a person run a 400 km race?
Answer:
248.548
Explanation:
How is the glucose level in the blood maintained? Which body system, organs, and hormones are used and what do they do?
Answer:
Explanation:
Insulin is an hormone used to regulate blood glucose, as it helps to maintain a balance. It allows for transport of glucose to organs such as liver.
The process of glucose regulation is a complex process. When food is eating glucose is absorbed into the bloodstream this happen from the gut and it raises the blood glucose level this causes insulin(hormone) to be released from the pancreas so glucose can move inside the cells and be used.
As glucose moves inside the cells, the glucose level inside the bloodstream returns to normal and insulin release slows down.
Glucose which is the main energy source used by cells is allowed to be taken up by muscles, liver and fat (adipose tissue) and use as a source of energy so they can function properly.
Help out please?????
Answer:
A non- metal
Explanation:
Hope u got ur answer
Lithium and magnesium bromide react to produce lithium bromide and magnesium metal
Answer: [tex]2Li+MgBr_2\rightarrow 2LiBr+Mg[/tex]
Explanation:
Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.
A more reactive element is one which can easily lose or gain electrons as compared to the other element.
The balanced chemical equation is:
[tex]2Li+MgBr_2\rightarrow 2LiBr+Mg[/tex]
Here Lithium being more reactive than magnesium, it can easily displace magnesium from its salt solution and form lithium bromide and magneium in elemental form.
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
In Period 2, as the elements are considered from left to
right, there is a decrease in
A. Nonmetallic character
b metallic character
C atomic mass
D ionization energy
Answer:
it will option B ,hope it helps
Na2O is it ionic or covalent
Answer:
Sodium oxide (Na2O) is an ionic compound
Explanation: can i have brain plz!
The _________________ are either elements or compounds which are present prior to a chemical reaction.
I NEED EXPLANATIONSS!!!! Help , i have to past or my teacher will fail me .. again !!
Answer:
Put simply, Asexual reproduction is reproduction without the use of gametes or the number of chromosomes being changed. So they are genetically identical creatures. Some animals include wasps, lizards, sharks, turkeys, and sea urchins.
Sexual reproduction includes chromosomes and gametes being fused, creating genetically different offspring. Examples of creatures that reproduce sexually are humans, chickens, cow, pigs, etc.
Explanation:
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:
Charli is boiling a pot of water as she prepares dinner. The temperature at which the water boils can be explained by the external
pressure and
A
the amount of heat that is added to the pot of water.
B. the volume of the sample of water being heated.
C. the rate at which heat is added to the pot of water.
D
the strength of attractive forces among the water molecules.
PLEASE ANSWER QUICKLY THIS IS DUE IN 5 MINS!!
Answer:
ya tu sabes cómo se los aseguro
Where does an eagle get the energy it needs to grow and to fly?
Is the following chemical equation balanced?
C₁₀H₂₂ + 31 O₂ ⟶ 20 CO₂ + 22 H₂O
Answer:
Yes- i balanced it-
Explanation:
When does only the vertical component of light pass through a Polarizer?
PPPPPPPPLLLLLLLLLSSSSSS HHHHHHEEEEEELLLLPPPPP!!!!!!!!!!!!!!
Answer:
B
Explanation:
The student is not able to move the box in D --> 55N, 0N. Since the net force is 0, it means that no force is being applied. So you will choose answer B from your options.
Hope this helps, thank you !!
what mass of NH3 (g) is produced when 2 x 10^23 molecules of N2 reacts
Answer:
m=8.58
Explanation:
[tex]n = \frac{m}{mr} [/tex]
N=n÷la
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, what mass of NH[tex]_3[/tex] (g) produced is 11.23 g.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
N[tex]_2[/tex] + 3H[tex]_2[/tex] [tex]\rightarrow[/tex] 2NH[tex]_3[/tex]
moles of N[tex]_2[/tex]= given number of molecules/ 6.022×10²³
= 2 x 0²³/ 6.022×10²³
= 0.33 moles
moles of NH[tex]_3[/tex] produced= moles of N[tex]_2[/tex]×2
=0.66moles
mass of NH[tex]_3[/tex]= moles of NH[tex]_3[/tex]×Molar mass of NH[tex]_3[/tex]
= 0.66 × 17.03
=11.23 g
Therefore, what mass of NH[tex]_3[/tex] (g) produced is 11.23 g.
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