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Related Questions
RODINNIS
COURSES
onal Science
Attempt 1 of 2
Which of the following distinctions are used to identify sedimentary rock? Select all that apply.
o where is was formed
conditions it was formed under
n when it was formed
what it is composed of
how many layers it consists of
NEED HELP ASAP (check the picture)
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where it was formed and. conditions it was formed under
PLZ HELP!
How does changing the angle of a ramp affect the force required?
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Answer:
depending on how you change the angle on the ramp the kanetic energy can go up or down depending on how u angle the ramp
Explanation:
Explain in a short sentence how you can tell a reaction is a decomposition reaction.
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Answer: A decomposition reaction occurs when one reactant breaks down into two or more products.
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Which of the following compounds is least soluble in water?
1) Copper (II) Chloride
2) Aluminum Acetate
3) Iron (III) hydroxide
4) Potassium Sulfate
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Answer:
3) iron (iii) hydroxide
Explanation:
What is the charge of the nucleus ? Why ?
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Answer:
A nucleus is a positive charge
Explanation:
A nucleus is made up of protons and neutrons. Protons have a positive charge and neutrons have a neutral charge.
What does the formula of an ionic compound tell you?
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Answer:
The overall ionic formula for a compound must be electrically neutral, meaning it has no charge. When writing the formula for the ionic compound, the cation comes first, followed by the anion, both with numeric subscripts to indicate the number of atoms of each.
Explanation:
How is the rock in the deep mantle similar to the rock in the parts of the mantle nearest the surface? How is it different?
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Answer:
Similarity: Rocks within the mantle contain more magnesium and iron than the ones in the crust.
Difference: Rocks in the deep mantle are under intense heat and pressure. In this case, they are semi-solid rocks that flow slowly. On the other hand, the part of the mantle that is nearest to the surface consists of rigid rocks. It has a lower temperature than the rocks in the deep mantle.
Explanation:
Rocks within the mantle contain more magnesium and iron than the ones in the crust.
What is Rocks?
Rocks in the deep mantle are under intense heat and pressure. In this case, they are semi-solid rocks that flow slowly.
On the other hand, the part of the mantle that is nearest to the surface consists of rigid rocks. It has a lower temperature than the rocks in the deep mantle.
According to geologists, a rock is a naturally occurring material made up of crystalline crystals of various minerals that have fused together to form a solid mass.
Therefore, Rocks within the mantle contain more magnesium and iron than the ones in the crust.
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Which statement accurately compares the properties of 1.00 mole of oxygen (O2) and 1.00 mole of
sodium (Na)? The oxygen -
O Contains more particles than sodium
O Contains less particles than sodium
O has a smaller mass than sodium.
O has a larger mass than sodium
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what charged particle is produced during ionic bonds
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Answer:
An ionic bond is formed by the complete transfer of some electrons from one atom to another. The atom losing one or more electrons becomes a cation or a positively charged ion. The atom gaining one or more electrons becomes an anion which is a negatively charged ion.
Why Do Some Things Stop While Others Keep Going?
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Answer:because they run out of energy when it is transferred and to other objects, or their kinetic energy
Explanation:
Using the table for electrode potential differences (Figure 2) identify the possible composition of the screws responsible for the corrosion observed in the contact area with the copper wire.
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which personal trait do scientists mainly depend upon when they design an experiment
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Answer:
creativity is the personal trait that scientists mainly depend upon when they design an experiment.
Do your answers to the previous questions satisfy
the following statements?
A) The dependent variable is changed by the
independent variable.
B) The independent variable causes a change
to another variable.
C) The independent variable is not changed by
another variable.
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Answer:
I put B&C
Explanation:
What is the volume of a balloon that contains a 1.00 mol sample of oxygen with a pressure of 2.00 atm at 300.0 K?
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Answer:
12.3
Explanation:
Trust
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, 12.3L is the volume of a balloon that contains a 1.00 mol sample of oxygen with a pressure of 2.00 atm at 300.0 K.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles.
Mathematically the relation between Pressure, volume and temperature can be given as
PV=nRT
where,
P = pressure of oxygen gas= 2.00 atm
V= volume of oxygen gas =?
n =number of moles of oxygen gas=1.00 mol
T =temperature of oxygen gas =300.0 K
R = Gas constant = 0.0821 L.atm/K.mol
Substituting all the given values, we get
2.00×V=1× 0.0821×300.0
On calculation we get
Volume=12.3L
Therefore, the volume of oxygen is 12.3L.
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What is the density of an object with a mass of 125 g and a volume of 150 mL ?
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Answer:
13
Explanation:
234567877
What is the molarity of a 750.0 mL aqueous solution that contains 117 g of NaCl?
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Answer:
2.67M
Explanation:
Given: volume of solution = 750.0 mL = 0.750 L Find: molarity
mass of solute = 117 g NaCl
= 58.4428 g/mol (Periodic Table)
Plan: Find the number of moles of solute from the molar mass, then calculate molarity.
Step 1: Find moles of NaCl.
Step 2: Calculate molarity.
Answer: 2.67 M
Question 4
TRUE or FALSE?
The particles in a solid have NO kinetic energy (they do not move).
True
False
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Answer: True
Explanation:
Particles vibrate in place but do not move.
Which of the following happens to a molecule of an object when the object is cooled?
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Answer: It loses kinetic energy.
what mass of carbon dioxide is produced from combustion of 100.0 grams of propane (C^3H^8)
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Answer:
Mass of CO₂ produced = 299.64 g
Explanation:
Given data:
Mass of CO₂ produced = ?
Mass of propane (C₃H₈) = 100.0 g
Solution:
Chemical equation:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Number of moles of propane:
Number of moles = mass/molar mass
Number of moles = 100.0 g/ 44.1 g/mol
Number of moles = 2.27 mol
Now we will compare the moles of propane and carbon dioxide.
C₃H₈ : CO₂
1 : 3
2.27 : 3/1×2.27 = 6.81 mol
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 6.81 mol × 44 g/mol
Mass = 299.64 g
3. What is the best description of an ionic bond?
A. electrostatic force of attraction between positive and negative ions
B. electrostatic force of repulsion between ions of the same charge
C. nuclear force of attraction between protons of different atoms
D. nuclear force of repulsion between protons of different atoms
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do pressure and temputer remain consant in earth interior
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Answer:
no
Explanation:
I have no idea what the answer is
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ill guess c
Explanation:
g
The compound has the empirical formula of CH. Give some possible molecular formulas for this compound if you didn't know the molar mass.
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Answer:
Convert the mass of each element to moles using the molar mass from the periodic table. Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number. This is the mole ratio of the elements and is represented by subscripts in the empirical formula.
Explanation:
The result is the molecular formula
it takes a slug 20 minutes to travel from the grass to the trash can a trip of 15 meters. how far could the slug travel in 60 minutes
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Answer:
45 meters
Explanation:
Did the math
Give answer fast (C)
☹️☹️☹️☹️☹️☹️
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(-3)^3 + (-3)^2 + -3 + 5
-27 + 9 - 3 + 5
-18 - 3 + 5
= -16
The answer is -16 for C
In which highlighted section of the periodic table in the diagram provided above are the elements whose atoms have 1 valence electron located?
A) a
B) b
C) c
D) d
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Answer:
B.
Explanation:
PLZ HELP!
Why do we use ramps (inclined planes) to help us move objects?
Plz nothing from the internet :D
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True or False, plz don't answer if you don't know the correct answer
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Answer:
The answer is true
Explanation:
Hope this can help
Solve and use correct sig figs AND units: (Example of how to type: 3.26 m2)
The density of mercury is 13.6 g/mL. What is the mass of 3,426 mL of mercury?
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Answer:
m = 46593.6 g
Explanation:
Given data:
Mass of mercury = ?
Volume of mercury = 3426 mL
Density of mercury = 13.6 g/mL
Solution:
Formula:
d = m/v
d = density
m = mass
v = volume
by putting values,
13.6 g/mL = m/ 3426 mL
m = 13.6 g/mL × 3426 mL
m = 46593.6 g
Question
Your boss is required to provide job safety training:
A) only if you request the training
B) as soon as there are a sufficient number of new employees
C) before you start your job
D) within the first year of your new job
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Answer:
C) before you start your job
Explanation:
its the 1st thing to do when ur on a job...i guess not sure but try it anyway....but if im wrong blame
Answer:
I think it's c (before you start your job)
Explanation:
cuz we can get experienced after we are provided job safety training and it is also the first thing we will be given.
sorry if I'm wrong