Answer:
Creep is the imperceptibly slow, steady, downward movement of slope-forming soil or rock. Movement is caused by shear stress sufficient to produce permanent deformation, but too small to produce shear failure. ... Continuous, where shear stress continuously exceeds the strength of the material.
Explanation:
Polar molecules have _____.
Answer:
Iconic bonds.
Which answer is the best comparison of the physical sciences to the life sciences. A. Physical science is the study of energy and inanimate matter. Life science is the study of living organisms. B. Physical science is the study of proper exercise and diet. Life science is the study of how humans and animals relate to one another. C. Physical science is the study of objects outside the Earth's atmosphere. Life science is the study of life in or under Earth's atmosphere. D. Physical science is the study of energy and inanimate matter. Life science is the study of the behavior of humans and animals.
Answer:
A. Physical science is the study of energy and inanimate matter. Life science is the study of living organisms.
Explanation:
Sciences can be grouped into physical science and life sciences. PHYSICAL SCIENCE is a branch of science that involves the study of energy and inanimate objects i.e lifeless. Physical science encompass the following: physics, chemistry, astronomy, geology etc.
On the other hand, LIFE SCIENCES, as the name implies, is the study of living organisms. It is also referred collectively to as BIOLOGICAL SCIENCES and it includes aspects such as biology, botany (plant), zoology (animal), microbiology (microbes), biochemistry etc.
Answer:
its a for plato
Explanation:
Some people say that only gay and bisexual men are likely to be infected with hub true false
Answer:
They do have a larger chance, but others might be infected too.
PLS GIVE BRAINLIEST
Answer:
thats false, yes they have a bigger chance but anyone can get it.
Explanation:
What do isotopes of an element have in common? How do they differ?
Answer:
Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.
Answer:
It is the electrons that determine the chemical behaviour of a particular element. Isotopes of an element share the same number of protons but have different numbers of neutrons
In an experiment, a student collects 107 mL of H2 over water at a pressure of 104.8 kPa and a temperature of 30°C. How many grams of H2 are present?
A) 0.024 g
B) 4.00 g
C) 0.04 g
D) 0 049 g
And why
Answer:
The answer options provided are incorrect. The correct answer is 0.009g
Explanation:
Using PV = nRT
Where;
P = pressure (atm)
V = volume (L)
R = gas constant (0.0821 Latm/Kmol)
T = temperature (K)
n = number of moles
Based in the information provided;
V = 107mL = 107/1000 = 0.107L
P = 104.8kPa = 104800 Pa = 1.03atm
T = 30°C + 273.15 = 303.15K
PV = nRT
1.03 × 0.107 = n × 0.0821 × 303.15
0.1102 = 24.89n
n = 0.1102/24.89
n = 0.0044 mol
mole = mass/molar mass
Molar mass of H2 = 2g/mol
mass = molar mass × mole
mass = 2 × 0.0044
mass = 0.0088
mass = 0.009g
What is the atomic mass
of an atom of calcium,
Ca?
Which substance particle will be attracted by a positively charged object
Answer:
Protons
Protons are another type of subatomic particle found in atoms. They have a positive charge so they are attracted to negative objects and repelled from positive objects.
Explanation:
14. Killer whales share more traits with dolphins than whales. Therefore, they are the
largest members of the dolphin family.
A.) Claim
B.) Evidence
C.) Reasoning
Answer:
I believe the correct answer is
C.)Reasoning
Explanation:
HELP ME, MARKED AS BRAINEST
Answer:
The answer is B
Explanation:
2Na + 2H2O = 2NaOH + H2
Why is there no reaction between solid silver and copper (II) nitrate
For the reaction to occur, it is necessary that the metal which replaces the metal from the compound LIES above that metal in the ELECTROCHEMICAL SERIES(ECS). The metal in the compound here is Copper (II) nitrate where as the metal trying to displace is silver. Silver lies below the copper in a ECS, that means Copper is more reactive than silver. The reaction is not possible because more reactive metal displaces less reactive metal from its compound, and silver is LESS reactive than copper so it cant displace the copper from copper nitrate.
_____________________________________THE ELECTROCHEMICAL SERIES IS ATTACHED BELOWcreate a hypothesis that can be tested in an experiment
When the element selenium (Se) ionizes to have a complete valence shell of electrons, the
result will be an lon that is?
Answer:
Positively Charged
Explanation:
The is a group XVI and period 4 element of the periodic table with similar physical and chemical to that of tellurium and sulfur. Selenium exist in different allotropic forms, which have different solubility including selenate, selenite and selenium in elemental form
The Se ion in selenate has a positive charge of +6, while the selenate ion has a charge of -2
The Se ion in selenite has a charge of +4, while the selenite ion has a negative charge of -2.
The charge of Se in elemental selenium is 0.
An atom's nucleus contains three protons and three neutrons. What is the
overall charge of the nucleus?
A. O
B. +3
C. -3
D. +6
Answer:
Explanation: A.0
How much tin II fluoride will be made when reacting 45.0 grams of tin with an excess of hydrofluoric acid if the percent yield for the reaction is 60%
Sn + HF = SnF2 + H2
Mass of SnF₂ produced : 35.634 g
Further explanationReaction
Sn+2HF⇒SnF₂+H₂
mol Sn (Ar 118.710 g/mol) :
[tex]\tt \dfrac{45}{118.710}=0.379[/tex]
mol SnF₂ = mol Sn = 0.379
mass SnF₂ (MW=156.69 g/mol) :
[tex]\tt 0.379\times 156.69=59.39~g[/tex]⇒theoretical
[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\60\%=\dfrac{actual}{59.39}\times 100\%\\\\actual=0.6\times 59.39=35.634~g[/tex]
How can I get the 3 sig figs of this number 187515.4207
Answer:
1.88 x 10^5
Explanation:
You have to round because all of the numbers in 187515.4207 are significant
Round to: 188000
Put in scientific notation:
1.88 x 10^5
Answer:
well scientific notation would be = 1.875154207 × 10^5
you cant rlly simply the number any further to get 3 sig figs
youd need something like 187 to be 3 sig figs
are you saying the question correctly?
help me with these problems please.
d. 6751 mL to liters. express your answer to four significant figures and include the appropriate units.
Answer: 6751 L
Explanation:
1000 mL = 1 L
so dividing 6751 by 1000 gives .6751 L
What element is Group 10, period 4
Answer:
Nickel
Explanation:
what is the net ionic equation for bel2(aq) + pbso4(aq) = baso4(aq) + pbl2(s)?
Answer:
The net ionic question is bel2(aq) + pbso4(aq)
We see these two addends come at both sides of the equation.
It is the answer to this.
If 9.8g water is used in electrolysis, what is the percent yield if 5.6g of oxygen was
collected after the experiment?
H20 --> H2 + O2
Answer:
Approximately [tex]64\%[/tex].
Explanation:
[tex]\displaystyle \text{Percentage Yield} = \frac{\text{Actual Yield}}{\text{Theoretical Yield}} \times 100\%[/tex]
The actual yield of [tex]\rm O_2[/tex] was given. The theoretical yield needs to be calculated from the quantity of the reactant.
Balance the equation for the hydrolysis of water:
[tex]\rm 2\, H_2O \, (l) \to 2\, H_2\, (g) + O_2\, (g)[/tex].
Note the ratio between the coefficient of [tex]\rm H_2O\, (g)[/tex] and [tex]\rm O_2\, (g)[/tex]:
[tex]\displaystyle \frac{n(\mathrm{O_2\, (g)})}{n(\mathrm{H_2O\, (aq)})} = \frac{1}{2}[/tex].
This ratio will be useful for finding the theoretical yield of [tex]\rm O_2\, (g)[/tex].
Look up the relative atomic mass of hydrogen and oxygen on a modern periodic table.
[tex]\rm H[/tex]: [tex]1.008[/tex].[tex]\rm O[/tex]: [tex]15.999[/tex].Calculate the formula mass of [tex]\rm H_2O[/tex] and [tex]\rm O_2[/tex]:
[tex]M(\mathrm{H_2O}) =2\times 1.008 + 15.999 = 18.015\; \rm g \cdot mol^{-1}[/tex].
[tex]M(\mathrm{O_2}) =2\times 15.999 = 31.998\; \rm g \cdot mol^{-1}[/tex].
Calculate the number of moles of molecules in [tex]9.8\; \rm g[/tex] of [tex]\rm H_2O[/tex]:
[tex]\displaystyle n(\mathrm{H_2O}) = \frac{m(\mathrm{H_2O})}{M(\mathrm{H_2O})} = \frac{9.8\; \rm g}{18.015\; \rm g \cdot mol^{-1}} \approx 0.543991\;\rm g \cdot mol^{-1}[/tex].
Make use of the ratio [tex]\displaystyle \frac{n(\mathrm{O_2\, (g)})}{n(\mathrm{H_2O\, (aq)})} = \frac{1}{2}[/tex] to find the theoretical yield of [tex]\rm O_2[/tex] (in terms of number of moles of molecules.)
[tex]\begin{aligned} n(\mathrm{O_2}) &= \displaystyle \frac{n(\mathrm{O_2\, (g)})}{n(\mathrm{H_2O\, (aq)})} \cdot n(\mathrm{H_2O}) \\ &\approx \frac{1}{2} \times 0.543991\; \rm mol \approx 0.271996\; \rm mol \end{aligned}[/tex].
Calculate the mass of that approximately [tex]0.271996\; \rm mol[/tex] of [tex]\rm O_2[/tex] (theoretical yield.)
[tex]\begin{aligned}m(\mathrm{O_2}) &= n(\mathrm{O_2}) \cdot M(\mathrm{O_2}) \\ &\approx 0.271996\; \rm mol \times 31.998\; \rm g \cdot mol^{-1} \approx 8.70331 \; \rm g \end{aligned}[/tex].
That would correspond to the theoretical yield of [tex]\rm O_2[/tex] (in term of the mass of the product.)
Given that the actual yield is [tex]5.6\; \rm g[/tex], calculate the percentage yield:
[tex]\begin{aligned}\text{Percentage Yield} &= \frac{\text{Actual Yield}}{\text{Theoretical Yield}} \times 100\% \\ &\approx \frac{5.6\; \rm g}{8.70331\; \rm g} \times 100\% \approx 64\%\end{aligned}[/tex].
To ensure that a vehicle crash is inelastic, vehicle safety designers add crumple zones to vehicles. A crumple zone is a part of a vehicle designed to crumple easily in a crash. Use Newton’s second law to explain why crumple zones reduce the force in a collision.
Answer:
well because with the velocity of the two, using the second law, it can slow the velocity before there is a casualty.
Explanation:
What is the correct name for H5P2?
Answer:
Diphosphanium
Explanation:
mark brianliest
What happens if you are in a swimming
pool and you push a beach ball down
with your hands?
Answer:
it will float back up because it's not dense enough to go down
How much energy is required to raise 10.0 grams of water (c=4.18j/gC) by 20*C?
Answer:
Q = 836 J
Explanation:
Given data:
Mass of water = 10.0 g
Temperature increased =ΔT = 20°C
Specific heat capacity of water = 4.18 J/g.°C
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
Q = 10.0 g × 4.18 J/g.°C × 20°C
Q = 836 J
1. What is the definition of a chemical property?
Answer:
that can be established only by changing a substance's chemical
Explanation:
Answer:
A chemical property is a characteristic of a substance abserved in chemical reactions.
Explanation:
Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.
What is true of a decomposition reaction? (4 points)
Answer:
C
Explanation:
It starts with one reactant to give and create new compounds as a product. They need a source of energy that can be heat, light, or electricity to break up chemical bonds.
Answer:
The addition of energy in the form of heat or electricity is often required.
Explanation:
A decomposition reaction is a chemical reaction that starts with single reactants to give new compounds as the products. These reaction requires a source of energy that could be light, heat or electricity to facilitate the breaking-down of the chemical bonds.
Which two of the given elements have the most similar chemical properties Mg, Ar, As, Sr
Answer:
Here is your answer
Explanation:
Mg and sr
Which correctly lists the three main ocean zones
pls answer 15 points
Answer:
Deep zone, surface zone and transition zone.
Answer:
The answer is C. neritic, intertidal, open ocean.:) :) !!!!Explanation:
HELP ILL GIVE 100 POINTS
If you put a piece of zinc into a solution of copper (I) sulfate and allow the single replacement reaction to go to completion, how will you know which of the reactants is the limiting reactant? Write the balanced equation, including the states of matter of the reactants and products, to help support your answer.
Check all the answers that apply. Energy is the ability to
Question 8 options:
Change speed
Do work
Change direction
Change temperature
A laboratory bottle of helium gas occupies a volume of 2.0 L at 760 mm Hg. Calculate the new pressure if the
volume falls to 1.8 L.
Answer:
844.4 mmHgExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we are finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
From the question we have
[tex]P_2 = \frac{2 \times 760}{1.8} = \frac{1520}{1.8} \\ = 844.4444...[/tex]
We have the final answer as
844.4 mmHgHope this helps you