Answers
Answer:
CCI2
Explanation:
Related Questions
Look at Beaker B below. It shows a cell with 10% salt in a beaker filled with 2% salt. Which direction will water flow in?
Question 18 options:
water will flow from beaker to cell
water will from cell to beaker
Answers
Answer:
Water will flow from beaker to cell
Explanation:
Hopefully this helps!!! :)))
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The table lists some characteristics of two planets
Mercury Mars
Mass 3.3x10^23kg 6.42x10^23kg
gravity 3.7 m/s^2 3.7 m/s^2
Distance 4879km 6792km
Which statement is true?
A. mars diameter is less than mercury's
B. Objects weight is the same everywhere in the universe
C Mercury and Mars have the same gravitational force.
D. Mars's mass is less than Mercury's
Answers
Answer: C
Explanation: Mercury and Mars have the same gravitational force. I got it right
A scientist is studying a cross between plants that are heterozygous (Xx) for a certain trait. She will use a table similar to this one to make a Punnett square for the cross.
Which percentage of offspring will most likely have the genotype represented by the letter A in this table?
0%
25%
50%
75%
Answers
Answer:
25% XX
50% Xx
25% xx
Explanation:
see picture
Answer:
Your answer is B : 25% :)
Explanation:
B's correct on Edg for me.
The Nebular Theory explains the formation of:
A). only planets
B). galaxies
C). the Universe
D). a Star and orbiting planets
Answers
Answer:
The Answer is D: A star and orbiting planets
Explanation:
Not to be confused with the Big Bang theroy (which "explains" the origin of the universe) The Neublar Theory explains the formation of the solar system, which is bascially A star and orbiting planets.
I hope this answers your question, Have a blessed day and Happy holidays
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Which best describes a compound such as magnesium oxide? an impure substance that is made up of two elements a mixture of two uncommon substances a mixture of two common elements a pure substance that is made up of different elements
Answers
Answer:
A pure substance that is made up of different elements
Explanation:
Answer:
D. a pure substance that is made up of different elements
Explanation:
Step-by-step explanation:
There are two types of pure substances: elements and compounds.
Elements are made up of only one type of atom. And compounds are pure substances, that are made up of more than one type of element. Like - magnesium oxide. It is a compound of a metal with a non-metal and is held together with ionic bonds.
What is the difference between heat of formation and heat of reaction? Give examples and units
Answers
Answer:
The main difference between the heat of formation and heat of reaction is that heat of formation is the amount of energy either absorbed or released during the formation of a compound whereas heat of reaction is the amount of energy either absorbed or released during any chemical reaction.
How Fast can you answer how fast can i give you brainliest????? HELP
Answers
if all atoms are composed of the same particles, how can there be more than 100 different elements?
Answers
Answer:
The number of protons determine the type of atom
When evaluating a paper delivery, a homeowner would be most concerned about ____. a. the accuracy of the throws c. the speed of the throws b. the precision of the throws d. the acceleration of the throws Please select the best answer from the choices provided
Answers
Answer:
b. the precision of the throws
Explanation:
When dealing with paper delivery homeowners are mainly concerned about the precision of the throws. They technically want the paper to land directly on their front door. Landing there, the paper will be protected from the rain and be visible for the homeowner to easily see it and pick it up in the morning when they wake up. Bad precision can lead the paper to fall into a puddle or on the grass where it will get wet and become useless or even end up breaking a window or other fragile items.
football is blown up in hot summer but in evening its softer in the evening explain
Answers
Answer:
This is because the material of which the football is made up of expands during the day due to hot summer where the particles of it try to move away from each other whereas at night due t less temperature the contract therefore the football feels softer as before
Explain why Ra is larger than Be. With 2 points.
Answers
Explanation:
Radium(Ra)=>atomic number=88
BERYLLIUM (Be)=>atomic number =4
why is Ra larger than Be
1. since the atomic number of Ra is greater than Be, the number of electrons is more, which means there are more number of shells present in Ra than Be. (atomic Radius)2. the more the valence electron (excluding fully filled ones) the less is the nuclear attraction forcesince Ra has more valence electron in its outermost shell, the nuclear attraction force is less which means that Ra 's size is greater than Be.hope it helps:)
What type of chemical reaction has only one product?
Answers
Answer:
synthesis reactions
Explanation:
Just as synthesis reactions can only form one product, decomposition reactions can only start with one reactant
Find the measure of the missing angle.
a = ?
Answers
solution is 90°-60°=30°
Changes in either _______ or _______ can cause a change in the state of matter.
A. Temperature or Pressure
B. Temperature or Matter
C. Matter or Pressure
Answers
Answer:
A. Temperature or Pressure
Explanation:
Which statement is true of the rock cycle?
A. subsurface events include: compaction cementation and deposition
B. surface events include: weathering erosion and deposition
C. subsurface events include: melting pressure and erosion
D. surface events include: cooling, heat and pressure, melting
Answers
Answer:
c
Explanation:
igneous, sedimentary, and metamorphic. igneous forms from molten rock cools and solidifides
What is the temperature range for ammonium nitrate crystals and a pouch of water?
Answers
Answer:
its cold
Explanation:
how many moles are in 8.32 times 1024 molecules of CO2
Answers
Answer:
13.8 mol CO₂
General Formulas and Concepts:
Chemistry - Atomic Structure
Using Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:
Step 1: Define
8.32 × 10²⁴ molecules CO₂
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
[tex]8.32 \cdot 10^{24} \ molecules \ CO_2(\frac{1 \ mol \ CO_2}{6.022 \cdot 10^{23} \ molecules \ CO_2} )[/tex] = 13.816 mol CO₂
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
13.816 mol CO₂ ≈ 13.8 mol CO₂
how elements are arranged in the groups of periodic table
Answers
Answer:
Explanation:
The chemical elements are arranged in order of increasing atomic number. The horizontal rows are called periods and the vertical columns are called groups. Elements in the same group have similar chemical properties. This is because they have the same number of outer electrons and the same valency.
what is the significance of tempreture to °c?
Answers
What is the chemical name for the compound IFs?
Select the correct answer.
Answers
5)
Why do elements in the same family generally have similar properties?
Answers
Answer: Elements in the same family generally have similar properties because they contain the same number of the electrons, for instance.
Hope this helped!
I am clueless on this question please help me !
Answers
The Answer is B, 18 smores.
Explanation:
It takes simple math. There are 36 graham crackers. You divide it by 2 because you have to use 2 crackers for each smore. There is more than enough marshmallows and squares of chocolate to make 18 smores.
You can only make 18 smores because even though there's a lot of marshmallows and square of chocolate, there is no more graham crackers to make more smores.
Hope this helped :)
Its B, trust me
Im smart
Calculate the average atomic mass of an element if an isotope with a mass of 55 amu has a natural abundance of 15% and an isotope with a mass of 56 amu has a percentage abundance of 85%. Please show your work and include appropriate units with your answer.
Answers
Answer:
Average atomic mass = F
1
M
1
+F
2
M
2
+...+F
n
M
n
Where F
1
,F
2
,...F
n
is the fraction representing the natural abundance of the isotope and M is the weight of the isotope.
Avg. At. Mass = (0.85×11)+(0.10×12)+(0.05×13)
= 9.35+1.2+0.65
Therefore, the average atomic mass = 11.2
Which region in the ir spectrum could be used to distinguish between butanoic acid and 2-butanone?.
Answers
The region in the IR spectrum could be used to distinguish between butanoic acid and 2-butanone is 2500-3300 cm^-1.
What is IR spectrum:
IR spectroscopy (which is short for infrared spectroscopy) deals with the infrared region of the electromagnetic spectrum, i.e. light having a longer wavelength and a lower frequency than visible light. Infrared Spectroscopy generally refers to the analysis of the interaction of a molecule with infrared light.
The IR spectroscopy concept can generally be analyzed in three ways: by measuring reflection, emission, and absorption. The major use of infrared spectroscopy is to determine the functional groups of molecules, relevant to both organic and inorganic chemistry.
Therefore,
For carboxylic acid, a broad peak for -OH group is obtained in the region of 3000-2500 cm-1 in the IR spectrum. This is the distinguishing feature of -COOH or carboxylic group of butanoic acid and -CO or ketone of butanone. Both shows -CO or carbonyl peak in the region 1680-1750 cm-1, but the above mentioned distinguishes them.
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Which is a difference between plant and animal cells?
Question 7 options:
An animal cell can produce energy, because it has mitochondria.
A plant cell has a well defined shape, because it has a cell wall.
A plant cell can store genetic information, because it has a nucleus.
Molecules can only pass into an animal cell because it has a cell membrane.
Answers
Answer:A plant cell has a well defined shape, because it has a cell wall.
Explanation:
e Formula Practice
K
On a zip-line course, you are harnessed to a
cable that travels through the treetops. You
start at platform A and zip to each of the other
platforms. How far do you travel from Platform
B to Platform C?
<
Question 8, *1.7.29
30-
20
ICH
50-10-30-201-10
Ay
-10-
-25
-30
The distance from platform B to platform C is approximately meters.
(Round to the nearest tenth of a meter as needed.)
10 20 30 40 50
Q
OON
HW Score: 70%, 7
O Points: 0 of 1
Answers
The distance from Platform B to Platform C is 26.926 units
The parameters listed are;
The distance between platforms A and F on the zip-line course is provided;
On the path of travel graph shown, we have;
Point B's coordinates are (-25, -20) and Point C's coordinates are (-15, 5)
The formula provides the distance between two locations with coordinates (x1, y1) and (x2, y2);
l=[tex]\sqrt[]{(y2-y1)^2 +(x2-x1)^2}[/tex]
Therefore, by inserting (-25, -20) = (x1, y1) and (-15, 5) = (x2, y2), the distance between B and C may be calculated.
that provides;
l=[tex]\sqrt[]{(5- (-20))^2 + ((-15) - (-25))^2}[/tex] = 26.926 units
B and C are separated by 26.926 units.
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1 points)
You have 300 grams of Al2(CO3)3. How many moles are produced?
Answers
Answer:
0.5133805136 moles.
Explanation:
1 gram of Al2(Co3)3 equals 0.0017112683785004 moles, we need the amount of moles produced in 300 grams of Al2(CO3)3, so we have to multiply 1 gram of Al2(CO3)3 times 300: 0.0017112683785004 x 300, in conclusion,
300 grams of Al2(Co3)3 equals 0.5133805136.
15 points
If calcium carbonate is heated strongly, carbon dioxide gas is driven off, leaving a
residue of calcium oxide. ((Write the unbalanced chemical reaction for this process))
Answers
If calcium carbonate is heated strongly, carbon dioxide gas is driven off , leaving a residue of calcium oxide then the unbalanced chemical reaction for this process is given as ,
[tex]CaCO_{3}[/tex] → [tex]CO_{2}[/tex] + CaO
A chemical equation that is out of balance has an uneven number of atoms from various elements in the reactants and products side . Chemical equations must be balanced since they are not accurately represented when they are unbalanced .
In balanced chemical equation the number of atoms in reactant side is equal to the number of atoms in product side .
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(5) matter and energy. the student knows that matter has physical properties and those properties determine how it is described, classified, changed, and used. the student is expected to:
Answers
The student is expected to classify matter by physical properties, including shape, relative mass, relative temperature, texture, flexibility, and whether material is a solid or liquid.
Flexibility is the ability of a joint or series of joints to move through an unrestricted, pain free range of motion. Although flexibility varies widely from person to person, minimum ranges are necessary for maintaining joint and total body health.
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Which statement best describes how deflating a soccer ball is evidence of matter?
a) The ball changes shape from round to flat.
b) The ball increases size and shape.
c) The mass of the ball has increased.
d) The temperature outside the ball has changed.
Answers
Answer:
The temperature outside the ball has changed