Answer:
#4 is the correct answer
Explanation:
For #1, Cobalt has an ionic charge of +2
Chloride has a charge of -1, and Zinc has an ionic charge of +2. Therefore, Au has a charge of +1
what is basic buffer
Answer:
It is the solution of a mixture of a weak base and a salt of this weak base with a strong acid.
Explanation:
How many moles would you need to have 7.85 x 10^22 molecules of ammonia (NH3).
0.130 moles NH₃
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
[Given] 7.85 × 10²² molecules NH₃
[Solve] moles NH₃
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
[DA] Set up: [tex]\displaystyle 7.85 \cdot 10^{22} \ molecules \ NH_3(\frac{1 \ mol \ NH_3}{6.022 \cdot 10^{23} \ molecules \ NH_3})[/tex][DA] Multiply/Divide [Cancel out units]: [tex]\displaystyle 0.130355 \ moles \ NH_3[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
0.130355 moles NH₃ ≈ 0.130 moles NH₃
Fish, amphibians, reptiles, birds, and mammals have similar embryos. They all start with gill slits. Fish and some amphibians grow to have gills. Some amphibians, reptiles, birds, and mammals develop lungs to breathe air
They all start with tails. Fish, some amphibians, reptiles, and birds grow tails. Humans do not keep their tails.
Fish and reptiles develop scales. Amphibians, birds, and humans have skin. Birds have feathers, and humans have hair. With which animal do humans exhibit the most linear relationship?
birds
amphibians
reptiles
fish
Answer:
Birds
Explanation: They are both mammals
Answer:
birds
Explanation:
What happens after coral is bleached?
It dies immediately
It produces peroxides
It is susceptible to starvation
It releases algae into the ocean
Explanation:
The Answer Is
That The Coral Releases Its Colours And Becomes Pale White
Tiana is a chemist who is making a chemical to add to swimming pools in order to make the water safer. she mixed two solid substances together in a sealed container. the diagram above shows the repeating groups of atoms that make up the two starting substances. After mixing, Tiana found two liquid substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?
Explanation:
chemical to add to swimming pools in order
to make the water safer. She mixed two solid
substances together in a sealed container.
The diagram above shows the repeating
groups of atoms that make up the two
starting substances.
After mixing, Tiana found two liquid
substances in the sealed container.
(Nothing had escaped.) Which of the
diagrams to the left shows the repeating
groups of atoms that make up the ending
substances?
Answer:
Where are the pictures????
Explanation:
What are molecules, and how are the properties of molecules different from the atoms they come from? Give an example.
Answer:
Molecules are the smallest particle of a compound or element which can be found in nature as a free entity and made up of atoms bonded together. The molecules can not take part in the chemical reaction on their own directly.
An atom is on other hand is the smallest particle that does not exist free in nature and bonded together to form molecules and involves in the chemical reactions directly.
Therefore we can say that the molecules are formed by atoms while the atom exists as an entity in nature.
Some students decide to plant their own garden. They want to eat a more plant-based diet For meat, they will buy locally from a butcher. Any remaining scraps will be composted and used as fertilizer for their garden Which part of this plan represents recycling to reduce their waste?
composting scraps
planting a garden
eating a plant-based diet
buying locally
Answer:
composting scraps
recycling is the action or process of converting waste into reusable material.
Which of these shows the correct hierarchical sequence?
organs cells ▸ tissues ► organ systems
cells ► tissues ► organs organ systems
organ systems tissues › cells organs
tissues cells organs ► organ systems
Answer:
cells -> tissues -> organs -> organ system
Answer:
Cells > tissues > Organs > Organs Systems
Explanation:
tissues are made of a group of cells
a specific organ is made up of a geoup of specific type of tissues
and a group of organs make up the organs system
1- beaver
2- eastern mole
3- opossum
4- woodchuck
An element that is likely to combine with other elements to form new substances is said to be ______.
A. buoyant
B. chemically reactive
C. metallic
D. solid at room temperature
Answer:
B. Chemically reactive
Explanation:
A Chemically reactive element is an element that is likely to combine with another element to form new substances
The reactivity of the element depends on the number of electrons in the outermost energy level and even the distance of the outermost energy level from the nucleus. From the periodic table, Fluorine is the most reactive non-metal while francium is the most chemically reactive metal
What is SVD in chemistry
Answer:
Singular value decomposition (SVD)
Explanation:
If u search go ogle u could find a good definition here is one I found:
"Singular value decomposition (SVD) is a technique commonly used in the analysis of spectroscopic data that both acts as a noise filter and reduces the dimensionality of subsequent least-squares fits." credit: science direct <3
Hope this helps! :) Plz mark brainliest!
How many H atoms are in 0.170 mole of ammonium sulfate?
Answer:
8
Explanation:
What chemical is banned by the Toxic Substances Control Act (TSCA)?
potassium
cyanide
lead
none of the above
Answer:
Lead
Explanation:
QUESTION 1
How many moles of Cl2 are needed to react with 1.15 moles of F2?Use the following balanced equation for the solving the problem
Cl2 + 3 F2 - 2 CIF3
Answer:
0.383 mole [tex]Cl_{2}[/tex]
Explanation:
Using dimensional analysis, we can find the number of moles of [tex]Cl_{2}[/tex] needed to react with 1.1 moles of [tex]F_{2}[/tex].
I have four questions hope you can help me
Answer:
2+2 kaszkqkq
Explanation:
Why to you do that this app doesn’t tell me anything
Identify the products for Ca + H2O(l)
Answer:
i
Explanation:
Answer:
Ca(OH)2 + H2
Explanation:
hope this helps
1. Mr. Brown weighs 670 newtons and he climbed a ladder that was 5 meters
high. How much work did he do?
What is different types of
Metal
Answer:
copper metal and steel metak
Answer:
Every element to the left of the staircase on the Periodic Table is a metal, excluding Hydrogen, and everything to the right of that staircase is a non-metal.
Explanation:
How does plastic impact the environment as a result of human activities
Answer:
As a result of human activities, plastic impacts the envionment in negative way that leads to serious environmental danger.
Explanation:
When we don't throw away plastic materials correctly, it causes littering. Well, this can also lead to piles of that, meaning that it is spreading toxins. Littering may also lead to blockages in flowing streams, lakes, river, ground water, big bodies of water, and small bodies of water. This also can contribute to global warming because plastic are made from chemicals that come from the production of fuels like oil, gas, coal and possible more.
2.00 L of a gas is collected at 25.0°C and 745.0 mmHg. What is the volume at 760.0 mmHg
and 273K. someone help i only have 2 mins left
Answer:
1.79 L
Explanation:
Step 1: Given data
Initial volume of the gas (V₁): 2.00 LInitial temperature of the gas (T₁): 25.0 °CInitial pressure of the gas (P₁): 745.0 mmHgFinal volume of the gas (V₂): ?Final temperature of the gas (T₂): 273 KFinal pressure of the gas (P₂): 760.0 mmHgStep 2: Convert T₁ to Kelvin
We will use the following expression.
K = °C + 273.15
K = 25.0 °C + 273.15 = 298.2 K
Step 3: Calculate the final volume of the gas
We will use the combined gas law.
P₁ × V₁ / T₁ = P₂ × V₂ / T₂
V₂ = P₁ × V₁ × T₂ / T₁ × P₂
V₂ = 745.0 mmHg × 2.00 L × 273 K / 298.2 K × 760.0 mmHg = 1.79 L
5
#1
°Fahrenheit
314
°Celsius Kelvin
20
60
290
10
40
280
0
AN
Each dash
Each dash
counts
by...
Each dash
counts by...
counts by...
Fahrenheit:
Celsius
Kelvin
# 2
At what temperature does water freeze in Farenheit, Celsius
and Kelvin? (pg 13 ESRT)
Answer:
#2 water freezes at 32F ,0 °C ,273.2K
Which of the following describes the characteristics of a solid?
Answer:
They have a definite shape and volume. The particles are very close and compacted together.
Explanation:
A certain substance, X, decomposes. 75 % of X remains after 100 minutes. How much X remains after 200 minutes if the reaction order with respect to X is the following order: zero order, first order and second order.
PLEASE HELP! DUE IN 5 MINS SUPER EASY CHEMISTRY!!
Which of the following compounds contain the largest number of atoms?
Answer:
C
Explanation:
Since they all are 2 mols worth, all you have to do is count the number of atoms in each molecule
H2SO4 contains 2 hydrogen 1 sulfur 4 oxygen = 7 atoms
H2S contains 2 hydrogen and 1 sulfur = 3 atoms
H3PO4 contains 3 hydrogens 1 phosphorus 4 oxygens = 8 atoms
HNO3 contains 1 hydrogen 1 nitrogen and 3 oxygens = 5 atoms
You have the right answer.
science 0.00897 in scientific notation
the answer is
8.97×10^-3
2. Tania went outside and made two observations of the Moon that were several days apart. Her
observations are shown in the diagram above. The light part of the Moon appeared to get larger over
time. Why did this happen?
Answer:
I am very confused who is diagram.
Explanation:
Green material has high amounts of
O carbon
O magnesium
O phosphorus
O nitrogen
Heat transfer by radiation is a good example by which of the following.
I need help with the true or false
Answer:
1. True
2. True
3.True
4. False
5. True
6. False
7.True
Explanation: