Answer:
The volume of stone is 5cm³.
Explanation:
Given data:
Volume of water = 30 cm³
Volume of water and stone = 35 cm³
Volume of stone was 5 cm³ = true or false
Solution:
To check weather the given volume of stone is true or not we have to calculate the volume of stone from given data.
Volume of stone = (volume of water + stone ) - volume of water
Now we will put the values.
Volume of stone = 35 cm³ - 30 cm³
Volume of stone = 5 cm³
Thus the given value is true. The volume of stone is 5cm³.
How much heat is absorbed when 500 g of
water, c = 4.184 J/g°C, goes from 25.0 °C to
35.0 °C?
Answer:
Assume that the coffee has the same density, 0.997 g/mL ... One liter of water has a mass of 1 kg and a specific heat of 4.184 J/(g °C).
Explanation:
what is a Contraction science
Answer:
Contraction. (Science: physiology) a shortening or reduction in size, in connection with muscles contraction implies shortening and/or development of tension. Origin: L. Contractus = drawn together.
Explanation:
hope this helped:)
What is the correct electron-dot formula for Sulfur?
.......................................................
what is the scientific method?
A) the process of proving a theory
B) a way of analyzing data
C) a method of testing an idea
D) the steps required to form a hypothesis
Answer:
C- a method of testing an idea
1. A student in lab measures 4.6 grams of copper for an experiment. Upon further analysis he determines that he should have measured out 4.7 grams of copper. What is his percent error?
Answer:
[tex]2.13\%[/tex]
Explanation:
Quantity of copper measured by a student = 4.6 grams
Original quantity of copper = 4.7 grams
Error in measurement = Original quantity of copper - Quantity of copper measured by a student [tex]=4.7-4.6=0.1[/tex] grams
To find the percent error, apply the following formula:
Percent error = (Error in measurement / Original quantity of copper) × 100
[tex]=\frac{0.1}{4.7}(100)=2.13\%[/tex]
look at the three solid blocks made of the same material and with the exact same dimensions which block has the greatest mass
Answer:
where are the solid blocks?
Explanation:
1 teaspoon is Benefiber is added to 1 1/2 cups of water. Which of the following correctly describes what is formed?
O A. The chemical reaction between water and Benefiber allows one substance to dissolve in the other.
B. Water and Benefiber combine to form a precipitate.
o C. Benefiber is the solute in the solution that is formed.
D. Water is the solution in the solvent that is formed.
Explanation:
(A) Manganese salts give a grey borax bead test in reducing flame.
(B) From a mixed precipitate of AgCl and AgI, ammonia solution dissolves only AgCl due to the formation of [Ag(NH
3
)
2
]Cl.
(C) Ferric ions give a prussian blue precipitate on adding potassium ferrocyanide solution (D). On boiling the solution having K
+
, Ca
2+
, and HCO
3
−
ions, we does not get a precipitate of K
2
Ca(CO
3
)
2
What is the density of an object of an object having a mass of 6.0 grams and a volume of 35 cm3?
Answer:
0.17 ( 2 s.f.)
Explanation:
d=m/v
=6/35
=0.1714285
=0.17
Answer:
Hey bro
Explanation:
I don't like boys and the answer most definitely is 69
Which of the following statements is true about neutrons? *
a)They have a neutral charge and are found in an atom's nuclues
b)They have a negative charge and are found in an atom's nucleus
c)They have a positive charge and are found in the orbitals of an atom
d)They have a neutral charge and are found in the orbitals of an atom
Answer:
A
Explanation:
Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.
convert 3.01€22 molecules of O²(a) mole of O²) ,volume at S.T.P,no of Oxygen atom. (d) mass
Answer:
a )0.05 moles of O₂
b) 1.1207 dm³
c) 0.3× 10²³ atoms of oxygen
d) 1.6 g
Explanation:
Given data:
Number of molecules of O₂ = 3.01 × 10²² molecules
Number of moles of O₂ = ?
Volume of oxygen at ATP = ?
Number of oxygen atoms = ?
Mass of oxygen = ?
Solution:
The given problem will solve by using Avogadro number.
"It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance". The number 6.022 × 10²³ is called Avogadro number.
Moles of oxygen:
1 mole = 6.022 × 10²³ molecules
3.01 × 10²² molecules × 1 mol / 6.022 × 10²³ molecules
0.05 moles of O₂
Number of atoms of oxygen:
1 mole = 6.022 × 10²³ atoms
0.05 mol × 6.022 × 10²³ atoms /1 mol
0.3× 10²³ atoms of oxygen
Volume of oxygen:
1 mole of oxygen at STP occupy 22.414 dm³
0.05 mol × 22.414 dm³ / 1mol
1.1207 dm³
Mass of oxygen:
Mass = number of moles × molar mass
Mass = 0.05 mol × 32 g/mol
Mass = 1.6 g
What is the charge on an electron?
Answer
1.60217662 × 10-19 coulombs
Explanation:
.
Explain the significance of this quote, “Heisenberg may have slept here.”
The quote; “Heisenberg may have slept here.” is used to show a situation that involves uncertainty.
What is the meaning of “Heisenberg may have slept here.”?The quote; “Heisenberg may have slept here.” is used to connote uncertainty. Recall that Heisenberg the German scientist is the famous inventor of the uncertainty principle.
Hence, the quote; “Heisenberg may have slept here.” is used to show a situation that involves uncertainty.
Learn more about uncertainty principle:https://brainly.com/question/1851822
#SPJ2
the energy of motion is called
Answer:I think it’s mechanical energy
Explanation:
1.if I drove 40 miles west in 2 hours what is my velocity
2.find the time it takes for a bird that travels 15 miles per hour for 3 hours
1. v= 20 miles/hr
2. d = 45 miles
Further explanationVelocity is a vector that has both magnitude and direction
Velocity is the ratio of distance per time
Can be formulated :
[tex]\tt v=\dfrac{d}{t}[/tex]
v , m/s
d , m
t, s
1. d = 40 miles
t = 2 hr
[tex]\tt v=\dfrac{40~miles}{2~hr}\\\\v=20~miles/hr[/tex]
2. maybe you meant the distance traveled
v = 15 miles/hr
t = 3 hr
[tex]\tt d=v\times t\\\\d=15\times 3\\\\d=45~miles[/tex]
Methane gas reacts with oxygen by combustion. How many moles of methane are needed to produce 3.5x10^-4 moles of carbon dioxide?
Answer:
3.5×10^-4 moles of methane is needed.
how do birds fly in the south
Answer:
with there wings
Explanation:
birds have wings that flap up and down when they fly and this process repeats over and over
What are the characteristics of metals vs. non metals?
Answer:In the picture
Explanation: None
a patient is prescribed tigan capsules for vomiting. The drug is available in the form of 300.0 mg tigan/capsules ,and is administered in 4.0 doses/day of 1 capsule/dose. How many g Tigan does the patient recieve in 2.0 days?
The patient recieves 2.4 g Tigan in 2 days
Further explanationIn finding the conversion units, we can multiply and eliminate the same units so that we can get the desired quantity or unit.
In this case, it is expected that the number of Tigan is known in 2 days, so we just need to multiply the numbers that are known
[tex]\tt =300\dfrac{mg}{capsules}\times \dfrac{1~capsules}{dose}\times 4.0\dfrac{doses}{day}\times 2.0~days\\\\=300\times 1\times 4.0\times 2.0~mg=2400~mg=\boxed{\bold{2.4~g}}[/tex]
~~20 points~~ What is the mass number of an element which has 43 protons, 46 neutrons, and 43 electrons?
a. 132
b. 3
c. 86
d. 83706
e. 89
f. -46
g. there is not enough information given to correctly answer the question
Answer:
e. 89
Explanation:
The mass number is the number of protons and neutrons in an atom. It doesn't include electrons.
43 + 46 = 89
True or false. The center of gravity and center of mass of an object need to be in the same spot?
True
False
Answer:
i think false
Explanation:
Centre of mass is the point at which the distribution of mass is equal in all directions, and does not depend on gravitational field. Centre of gravity is the point at which the distribution of weight is equal in all directions, and does depend on gravitational field
found it on google so it could be wrong
Answer:
True
Explanation:
I took a quiz and got it right
pls mark as brainliest.
Take away my first letter and I remain the same. Take away my last letter and I remain unchanged. Remove all my letters and I'm still me. What am I?
Answer:
mail carrier
Explanation:
Microwave Miracle: Patrick believes that if fish eat microwaved food then they be able to swim through a maze faster. He decides to perform an experiment by placing fish food in a microwave for 20 seconds. He has the fish swim through a maze and records the time it takes for each one to make it to the end. He feeds the microwaved food to 10 fish (group A) and gives regular food to 10 others (group B). After 1 week, he has the fish swim through the maze again and records the times for each. Which fish are in the control group? * Group A Group B Microwaved Food Non-microwaved Food
Answer:
Group B
Explanation:
The fish in group B are those in the control group.
A control group during an experiment represents a group of the subject that is subjected to all experimental variables except the independent variable - the manipulate-able variable that is supplied by the experimenter which directly affects the dependent variable.
In this case, the independent variable is the type of food given to the two groups of fishes - microwaved or regular food while the dependent variable is the time it takes for the fishes to swim through the maze. Since the focus of the experiment is to see if microwaved food enhances the swimming speed of fishes, the group of fish that receives microwaved food would represent the treatment group while those that received regular food would be the control group.
Hence, group B represents the control group.
What two positions would the moon be when we have the lowest tidal range?
Answer:
Quarter and half moons
Explanation:
Significant figures are the digits within the number that help determine
accuracy.
о
True
о
False
Answer:false
Explanation:
How many grams of sodium chloride must be added to make 400 mL of a 0.600 M sodium chloride?
Answer:
14.0 g
Explanation:
nnandff
The mass in grams of sodium chloride must be added to make 400 mL of a 0.600 M sodium chloride is 14 grams.
How do we calculate mass from moles?Mass of any substance will be calculated by using their moles as:
n = W/M, where
W = required mass
M = molar mass
Also we know that, molarity of any solution is define as the number of moles of solute present in per liter of the solution.
M = n/V, where
M = molarity of NaCl = 0.600M
V = Volume of solution = 400mL = 0.4L
n = (0.6)(0.4) = 0.24moles
Now mass of NaCl will be calculated by using the first equation as:
W = (0.24mol)(58.44g/mol) = 14grams
Hence required mass of NaCl is 14 grams.
To know more about moles, visit the below link:
https://brainly.com/question/15374113
Lithium (Li) and oxygen (O) are both in period 2. They both have _____.
the same number of protons
two electron shells
the same number of electrons
similar properties
Answer:
So Lithium (Li) and Oxygen (O) are both have two electron shells
Explanation:
Answer:
Lithium (Li) and oxygen (O) both have two electron shells.
Explanation:
Answered correct on my test.
Also I'm aware you asked this around 4 months ago although I still wanted to answer so those who may need an answer in the future can reflect on this response and get the correct answer they deserve. Thanks! Happy New Year everyone. <3
3 AgNO3 + K3PO4 - Ag3PO4 + 3 KNO3
What is the reaction
Answer:
its a Double Displacement (Metathesis) reaction
the balanced equation is 3AgNO3 + K3PO4 → Ag3PO4 + 3KNO3
Explanation:
Sodium and Chlorine are both elements,
so the only contain one type of atom.
Is this true or false?
True
Answer:
False
Explanation:
The sun's energy influences climate in different ways. For example, the latitudes at the equator receive more intense energy from the sun and therefore have warmer temperatures. How does the sun's energy MOST DIRECTLY influence precipitation in an area?
Answer:
The Sun's energy is transferred as both light and heat energy, that raises the temperature of an area receiving the Sunlight. The increased temperature results in the evaporation of water from surfaces and water bodies, such that the mass of water vapor rises up into the atmosphere and condenses when it gets away from the ground heat to the cooler and higher altitudes
When there is a situation of low pressure, the wind blows into the low pressure, where, in the equator, comprises of high temperature air which could contain considerable amount of vapor from the neighboring water bodies, resulting in the eventual rise of very moist air, up into the atmosphere, that condenses at low temperature at the high altitudes, accumulate into larger masses of liquid water, and fall as rain
Explanation:
1) Describe the characteristics of molecular compounds that affect their particular physical
properties. (Include melting/boiling points, strength of bonds, reactivity, and 3-dimensional
geometry.)