Answers
Answer:
blank 1 ----> 1
blank 2 -----> 1
blank 3 ------> 3
Explanation:
easy one!
Related Questions
Which statement best describes how hou measure density
Answers
Answer:
density=mass/volume
Explanation:
density is defined as mass per unit volume.
When a molecule loses or gains an electron it becomes
Answers
When a molecule loses or gains an electron it becomes an ion.
"If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion."
Answer:
the molecule become an iron
Explanation:
have a great day
How many moles of carbon would 50.0 g of carbon represent?
Answers
Answer:
600 grams
Explanation:
The value of the mole is equal to the number of atoms in exactly 12 grams
12x50=600
Can some answer this please?
Which of these describes a chemical property of a substance?
A. Sugar's tendency to dissolve in water
B. Paper's tendency to tear
C. Gold's tendency to stay shiny
D. Wax's tendency to melt at 37 Celsius
Answers
Answer:
i think its C
Explanation:
Wax's tendency to melt can describe a chemical property of a substance. Therefore, option (D) is correct.
What is a chemical property?A chemical property can be described as any of a material's properties that becomes evident during a chemical reaction. Any quality can be established only by changing the chemical identity of the substance. Chemical properties cannot be evaluated by viewing or touching the substance.
The internal structure of the substance must be affected greatly for its chemical properties to be investigated. When a substance undergoes a chemical reaction, its properties will change drastically, resulting in a chemical change.
Chemical properties are contrasted with physical properties and can be used for building chemical classifications. They are also useful to identify an unknown substance.
As the wax melt, it also burns and hives the carbon dioxide, water, heat, and light. Therefore, the wax's tendency to melt and burn is a chemical property.
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12. What are two different ways to turn a turbine to generate electricity without using fossil
fuels?
HELPP
Answers
Answer:
two different ways are 1st by using water and 2nd by using wind these also not harm our environment
Help me if u good at science:)
How are mass and weight alike?
O A. Both are measured in pounds.
B. Both depend on how much matter an object has.
C. Both change with gravitational force.
OD. Both are the same everywhere in the universe.
Answers
Answer:
I belive it is B
Which of these common substances is a homogeneous mixture?
O
A. table salt
B. pure water
C. whole milk
D. maple syrup
Answers
Answer:
whole milk ,table salt , maple syrup
Answer:
d
Explanation:
6. Steel is a metallic-like material but it is not a pure element. It is a alloy.
True
False
Answers
Answer:
true
hope this helps! have an amazing day!
How much energy is required to raise the temperature of 0.2 kg of aluminum
from 15°C to 18°C?
5382 J
B. 538 J
C. 600 J
D. 179 J
Answers
True or False, In a neutral atom, the number of protons is equal to the number of neutrons
Answers
Answer:
False
Explanation:
In a neutral atom, the number of protons is not necessarily equal to the number of neutrons.
In such atom, the number of protons is equal to the number of electrons.
Protons are the positively charged particles in an atom. Electrons are the negatively charged particles in an atom. Neutrons do not carry any charges.When the number of protons and electrons are the same, a neutral atom is formed.
what do you know about periodic tables ?
Answers
Answer:
That it's really hard to remember and it's filled with elements
Explanation:
This planet is also called the "red planet"
O Mercury
O Venus
O Earth
O Mars
Answers
Answer:
mars
Explanation:
Balance the given
equation
SnO → Sn + O2
Sn
Sn
О
O
Answers
Explanation:
the balanced equation is: .........
Answer:
i agree with her/him^^^^^^^^^^^^^^^^^^^^^^
Explanation:
If an object what is 30 kg of mass is moving at 10 m/s to the right how much kinetic energy does it have
Answers
Explanation:
m=30
v=10
K.E=1/2mv^2
=1/2×30×10^2
=1/2×30×100
=1500 joule
how can volcanic ash change Earths surface ?
Answers
Answer:
well, it made volcanos grow larger and it developed land
Explanation:
Gases and solids injected into the stratosphere circled the globe for three weeks. Volcanic eruptions of this magnitude can impact global climate, reducing the amount of solar radiation reaching the Earth's surface, lowering temperatures in the troposphere, and changing atmospheric circulation patterns.
PLEASE HELP HELP I NEED THIS ASAP
Answers
If an element has 12 protons, 13 neutrons, and 15 electrons, what is its mass?
Answers
Answer:
25
Explanation:
mass number = protons + neutrons
= 13 + 12 = 25
explain how the removal of thermal energy (heat) from matter affects its particles
Answers
Answer:
You can change an object's state of matter by adding or removing thermal energy. When you add thermal energy to an object, these things can happen: Particles move faster
Explanation:
HELP ASAP
Which is involved in the formation of sinkholes?
O acidic rainwater
O
mining
O rising sea level
winds
Answers
Answer:
Sinkholes this is the answer
Answer:
B. Mining
Explanation:
trust
What is the wavelength of an electromagnetic wave that travels at 3 x 10^8 m/s and has a frequency of 60 mhz? (1 mhz = 1,000,000 hz)?
Answers
Answer:
5m
Explanation:
Given parameters:
Speed of wave = 3 x 10⁸m/s
Frequency = 60mhz = 60 x 10⁶Hz
Unknown:
wavelength = ?
Solution:
To solve this problem;
we use the expression:
V = F ∧
V is the velocity
F is the frequency
∧ is the wavelength
Now insert the parameters and solve;
3 x 10⁸ = 60 x 10⁶ x ∧
So;
∧ = 5m
Please help i cant find any answers...
Using the balanced equation below,
how many grams of cesium xenon
heptafluoride would be produced
from the complete reaction of 37.8 g
cesium fluoride?
CSF + XeF6 CsXeF7
Answers
Answer:
98.8
Explanation:
CsF + XeF6 --> CsXeF7
37.8g ................. ?g
37.8g CsF x (1 mol CsF / 151.9g CsF) x (1 mol CsXeF7 / 1 mol CsF) x (397.2g CsXeF7 / 1 mol CsXeF7) = 98.8g CsXeF7 .......... to three significant digits
Answer:
28.0
Explanation:
what partie is found outside of the nucleus
Answers
Answer:
Electrons
Explanation:
Answer:
electrons
Explanation:
Sn + 2Ha -> SnCl2 + H2
a. synthesis
b. single replacement
C. combustion
d. double replacement
e decomposition
Answers
Answer:
your question is totally wrong. there is no cl2 in reactants.
12. What is the mass number of an atom that has 4 protons, 4 electrons, and 5 neutrons?
Answers
Answer:
9
Explanation:
mass number = protons + neutrons
= 4 + 5 = 9
Find the average atomic mass for boron if 19.9% of boron atoms have a mass of 10.0129371 amu and 80.1% have a mass of 11.0093055 amu. Round to 3 significant figures.
Answers
Answer:
Average atomic mass = 10.8 amu
Explanation:
Given data:
Average atomic mass = ?
Percentage of boron having mass 10.0129371 amu = 19.9%
Percentage of boron having mass 11.0093055 amu = 80.1%
Solution:
Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) / 100
Average atomic mass = (19.9×10.0129371 )+(80.1×11.0093055) /100
Average atomic mass = 199.3 + 881.8 / 100
Average atomic mass = 1081.1 / 100
Average atomic mass = 10.8 amu.
Periodic Table Puzzle Test
Answers
Answer:
dfmpfndtngognjf
Explanation:
NHa is an
example of
O an element.
O a mixture.
O a compound
O an atom.
Answers
Answer:
what is the question
Explanation:
Answer:
COMPOUND
Explanation:
I THINK
when a car goes around a curve at a constant speed, in which direction is it accelerating
A. In the direction of the velocity
B. In the opposite direction of the velocity
C. Outside the curve
D. Inside the curve
Answers
Determine the number of particles present in 1.55 mol of sodium.
Answers
Answer: 1024 sodium ions
Explanation: The mathematical equation, N = n × NA, can be used to find the number of atoms, ions or molecules in any amount (in moles) of atoms, ions or molecules: 10 moles of helium atoms = 10 × (6.022 × 1023) = 6.022 × 1024 helium atoms. 10 moles of sodium ions = 10 × (6.022 × 1023) = 6.022 × 1024 sodium ions. (that took long)
Find the volume of a gas at 800.0 mm Hg and 40.0 °C if its volume at 720.0 mm Hg and 15 °C is 6.84 L.
Answers
Answer:
2 C6H6 + 15 O2 ( 12 CO2 + 6 H2O
Explanation:
6.156 L is the volume of a gas at 800.0 mm Hg and 40.0 °C if its volume at 720.0 mm Hg and 15 °C is 6.84 L.
What is an ideal gas equation?The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).
[tex]P_1V_1=P_2V_2[/tex]
[tex]P_1[/tex] = 800.0 mm Hg
[tex]V_1[/tex] = ?
[tex]P_2[/tex] = 720.0 mm Hg
[tex]V_2[/tex] = 6.84 L
Putting all the value in the equation;
[tex]P_1V_1=P_2V_2[/tex]
800.0 mm Hg X [tex]V_1[/tex] = 720.0 mm Hg X 6.84 L
[tex]V_1[/tex] =6.156 L
6.156 L is the volume of a gas at 800.0 mm Hg and 40.0 °C if its volume at 720.0 mm Hg and 15 °C is 6.84 L.
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