The beta particles are similar to alpha particles in the way that they both are used in the treatment of cancer.
What are the types of radioactive particles?Alpha particles, beta particles, and gamma rays are the three most frequent forms of radiation.
Two protons and two neutrons are joined together to form the alpha particle, which is positively charged.When a neutron becomes a proton and a high-energy electron, it generates a beta particle. The proton remains in the nucleus, but the electron is released as a beta particle from the atom.Similarity between beta and alpha particle is that they both are used in the treatment of cancer.
Hence both particles are used in the treatment of cancer.
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What is true of electrolytic cells but is not true of galvanic cells?
O A. They are spontaneous.
O B. They are nonspontaneous.
O C. Oxidation happens at the cathode.
O D. Reduction happens at the anode.
Answer:
The galvanic cells carry out the spontaneous reactions; there fore they dont require energy. They release free energy that also can be used to do work.
Answer:
B. They are nonspontaneous
Explanation:
Just took test
Calculate the given value using significant figures:
23.033 cm + 34.045 cm +55.040 mm
Answer:
The Answer is 112.118
Explanation:
Answer:
62.582 cm
Explanation:
divide 55.040mm by 10 because there is 10mm in 1 cm.
you will get 5.504 then just add 23.033 and 34.045
- the least amount of sig figs after the decimal is 3 so it stays as 62.582 cm.
Sound waves move the slowest through which medium :
water
ice
air
wood
Answer
Sounds travel slowest in gasses so it would be air
Answer: c - air
Explanation: took the test
When you walk at an average speed of 5km/h for 30 minutes, how far will you walk?
Answer:
150
Explanation:
i think that was the answer
Describe how the energy of a shear wave relates to the direction of particle motion.
Answer: Energy of a shear wave relates to the direction of a particle motion is downwards.
Explanation:
Answer:
Describe how the energy of a shear wave relates to the direction of particle motion.
Explanation:
What is the relationship between ionization energy and the
element's location on the periodic table?
Express the following in liters at STP:
6.62 x 10-3 moles HF
Answer:
The volume of 6.62×10⁻³moles of HF at STP is 148.38×10⁻³ L
Explanation:
Given data:
Number of moles of HF = 6.62×10⁻³ mol
Volume of HF in litter at STP = ?
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
Standard temperature = 273 K
Standard pressure = 1 atm
Now we will put the values in formula.
1 atm × V = 6.62×10⁻³mol ×0.0821 atm.L/ mol.K × 273 K
V = 6.62×10⁻³mol ×0.0821 atm.L/ mol.K × 273 K / 1 atm
V = 148.38×10⁻³ L
Thus, the volume of 6.62×10⁻³moles of HF at STP is 148.38×10⁻³ L.
If particles have enough kinetic energy to partly overcome
the force of attraction between them, matter exists as a
Answer:
Liquid
Explanation:
At 235°C, the pressure of a sample of oxygen gas is 743 mm Hg. If the volume remains the same, what will the pressure be at 265°C?
Answer:
786.88 mmHg
Explanation:
From the question given above, the following data were obtained:
Initial temperature (T1) = 235 °C
Initial pressure (P1) = 743 mmHg
Volume = constant
Final temperature (T2) = 265 °C
Final pressure (P2) =..?
Next, we shall convert Celsius temperature to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
Initial temperature (T1) = 235 °C
Initial temperature (T1) = 235 °C + 273 = 508 K
Final temperature (T2) = 265 °C
Final temperature (T2) = 265 °C + 273 = 538 K
Finally, we shall determine the new pressure as illustrated below:
Initial temperature (T1) = 508 K
Initial pressure (P1) = 743 mmHg
Final temperature (T2) = 538 K
Final pressure (P2) =..?
P1/T1 = P2/T2
743/508 = P2/538
Cross multiply
508 × P2 = 743 × 538
508 × P2 = 399734
Divide both side by 508
P2 = 399734 / 508
P2 = 786.88 mmHg
Therefore, the new pressure of the gas is 786.88 mmHg
A pencil has density of 0.875 g/cm^3. It has a volume of 4.0 cm^3. What is the mass?
Answer:
3.5g
Explanation:
[tex]Density=\frac{mass}{volume}\\ Mass= Density X Volume\\Mass = 0.875 X 4.0\\Therefore, Mass = 3.5 g[/tex]
Answer:
3.703703703703
Explanation:
What is the density of an object with a mass of 57.8g and a volume of 112.4mL?
D=m/v
D=57.8/112.4
D=0.51423487544 g/mL^2
How will the beam of light interact with the piece of wood?
Answer:
When a light wave with a single frequency strikes an object, a number of things could happen. The light wave could be absorbed by the object, in which case its energy is converted to heat. The light wave could be reflected by the object. And the light wave
Explanation:
As a pendulum swing from its highest to its lowest position along an arc, what happens to its kinetic energy and potential energy
A. Both the potential energy and kinetic energy decrease
B. The potential energy decreases while the kinetic energy increases
C. The kinetic energy decreases while the potential energy increases
D. Both the potential energy and kinetic energy increase
Answer:
B.The potential energy decreases while the kinetic energy increases.
Which two characteristics do all flowering plants have in common?
O A. They produce seeds.
O B. They produce cones.
C. They have vessels.
O D. They lack roots.
Answer: They have vessels, and produce seeds.
Explanation: Flowering plants have vascular tissue and use seeds to reproduce.
Answer: It is A and C
A P E X
Explanation:
I hope this help
Zygote fungi spores can survive very harsh conditions
why is a bird not considerd a autotroph?
Answer:
An Autotroph is an animal which can make its own food eg: plants make their own food. But birds hunt and search for their food they do not make it by themselves. Hence birds are not considered Autotrophs, instead they are considered to be Heterotrophs (animals which do not make their own food)
Explanation:
how to know whether something is an "atom" or not? for example
Ex: is hydrogen peroxide an "atom" ?
Ex 2: is butane an atom?
ASAP MULTIPLE CHOICE
What did Robert Millikan discover?
the nucleus of the atom
the mass of an electron
the charge-to-mass ratio of the electron
the charge of a neutron
Answer:
Robert Millikan discovered the elementary charge of an electron.
C
Imagine you had salt and pepper mixed together in a cup. What could you try to do
to separate the salt from the pepper?
Without tasting it, is it possible to distinguish salt water from pure water? Explain.
Write here:
To separate the salt from the pepper, I could try....
It
possible to distinguish salt water from pure water because ...
I
add speaker notes
The first difference that many people noticed was that salt will dissolve in water, but pepper will not. Some say putting it in the water will help. The pepper floats on the surface, while the salt sinks to the bottom and then dissolves. You can then evaporate the water to recover the salt.
Fertilizer from an agricultural area runs off into a river. The river carries the nutrients from this fertilizer and deposits them into an ocean bay. After the nutrients enter the bay, scientists monitoring the water would most likely see a decrease in which of these dissolved gases?
Answer:
i think it is oxygen
Explanation:
How do you test color?
Answer:
red
Explanation:
rojo yyyyy888888iiiiii
What is the mass of an atom with seven protons, seven neutrons, and seven electrons? Record and bubble in your answer below.
Answer:
Mass would be 14 amu
Explanation:
Iron is the most
abundant metal
found on Earth
A. First
B. Second
C. Third
D. Fourth
hope this is correct
Answer:
D
Explanation:
Iron is the fourth most abundant element, by mass, in the Earth's crust. The core of the Earth is thought to be largely composed of iron with nickel and sulfur. The most common iron-containing ore is haematite, but iron is found widely distributed in other minerals such as magnetite and taconite.
5. Convert the following numbers into scientific notation
0.04500 hm
Plant and animal cells have basically the same shape when viewed
under a microscope.
True or false
Answer:
False
Explanation:
Plant cells have rectangular shapes while animal cells are shaped irregularly.
Food contains chemical potential energy that the body uses. How do you think that the body gains this energy
HELPPPPP ME ASAP!
It's urgent
Answer:
0.2 M
Explanation:
Please see the attached pictures for the full solution.
7. Two samples of gold must have the same
Two samples of gold must have the same density as they have the same kind of atoms.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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URGENT !! Help fast this is due at 8:30 am.
Distinguish between the different types of Mixtures. And explain your answer
Answer:
a. solid- liquid mixture: Mixture that involves a solid and liquid substance.
b. solid- solid mixture: Mixture that involves two solid substances.
c. solid-gas mixture: Mixture that involves both a solid and gas substance.
d. liquid-liquid mixture: Mixture that involves two liquids.
e. liquid - gas mixture; Mixture of a liquid and a gas.
f. gas-gas mixture: Mixture of gases.
Explanation: Hope this helps.
How many significant figures are in 0.57
Answer:
0.57
Sig Figs
2
Decimals
2
Scientific Notation
5.7 × 10-1
Words
zero point five seven
Explanation:
Answer:
2
Explanation:
