Answer:
to protect astronauts from dieing from no air or presurre
Explanation:
Silver has a density of 10.5 grams/cm3. What would be the mass of a 5 cm3 piece of sliver
Answer:
52.5 g
Explanation:
Density= mass/volume
Rearranging the equation gives us m= d(V)
m= d(V)
m= (10.5 grams/cm^3)(5 cm^3)
m= 52.5 g
If the mass of an object is 20 kg and the acceleration is 5m/s2 . What is the force?
pleaseee help
Answer:
100 newtons
Explanation:
Using the force equation to solve;
F = m * a
F = 20 * 5
F = 100
True or False. Single covalent bonds are stronger than triple covalent
bonds
Answer:
False
Explanation:
Triple covalent bonds are much more stronger than single covalent bonds. In single bond, 2 electrons are shared, in double bond four electrons are shared and in triple bond six electrons are shared. Thus, triple bond is difficult to break since it is the strongest bond. Between the two atoms, stronger the bond, more stable the molecule. Thus, triple bond is more stable.
is heating an aluminum pan a chemical or physical reaction
Answer: chemical
Explanation: whenever heat is applied, it indicates a chemical change
Which statement is true? a. Energy is capability of doing work b. A cup of water has kinetic energy c. Kinetic energy is stored energy in substances. d. Potential energy is enery in motion. e. Heat and electricity are different forms of energy
Answer:
Option A an E.
Explanation:
Energy can be described as the capability to do work. It is what has to be transferred to an object in order to get this object to do work. Energy can be in various forms such as heat energy, kinetic, potential, electrical, chemical, nuclear etc.
It takes energy to do quite a number of things, from cooking food to driving and also in engaging in exercises.
1. How does erosion affect Earth's surface?
Answer:
By washing away the top soil and damages the echo system. It also destroys animal habitats.
Plz someone help me with this!
What structural formula represents 4 electrons shared between two atoms?
O 0=0
O Sg
ONEN
OP4
HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP
Answer:
finally found
31th July 2000
Compound name for C3F8
Answer:
Perflutren
Explanation:
Perflutren is a fluorinated hydrocarbon and gaseous substance used as an imaging contrast agent.
Which best illustrates the way in which radiation? Giving brainy.
Answer:
I dont really understand your question. but maybe this might help.
https://quizlet.com/283377931/radiation-flash-cards/
Explanation:
Fluidity is maximum in
a. Solid
b. Liquid
c. Gas
d. Liquid and gas
is the maximum population that a given area can support.
Carrying capacity
Population growth
Limiting factor
Immigration rate
The carrying capacity is the maximum number of individuals of a species that an environment can support. Population size decreases above carrying capacity due to a range of factors depending on the species concerned, but can include insufficient space, food supply, or sunlight.
Sound Wave, Ripple in water, Guitar String, TV Signal, Which one does not belong? Why?
Answer:
The TV signal.
Explanation: Hope this is right! :)
How is a temperature inversion like the temperatures of the stratosphere?
Answer:
When a weather phenomenon called a "temperature inversion" occurs, temperature in some part of the troposphere get warmer with increasing altitude, contrary to the normal situation. In the layer above the troposphere, the stratosphere, temperature rises with increasing altitude.
A salesman traveled at an average speed of 75 km/h for 2 hours. How far did he travel?
Answer: 150 km
Explanation:
75 × 2 = 150 km
Answer:
74km per hour can be put in fraction form, 75 (km)/ 1 hour
We need to know how man miles in 2 hours so our fraction will be x (km)/ 2 hours
75/1 = x/2
x= 150 km
Explanation:
periodic table
fill in the box :)
Answer:
I took a screen shot of your image, and wrote on top of it!
Explanation:
Hope this helps! :)
The mass of the Atom is determined mainly by the
a) mass of the neutrons
b) mass of the neutrons and protons
c) mass of the electrons
d) mass of the electrons and neutrons
Answer:
B.mass of the neutrons and protons
Explanation:
hope it's help..
True or False. Physical changes result in the formation of a new substance.
True or False. A major clue to a chemical change is the formation of a new
substance.
Answer:
1. false
2. true
Explanation:
I hope this helps
All of the following are empirical formulas EXCEPT
a) Fe(OH)3
b) Na2SO4
c) N204
d) Sn3(PO4)2
You have 1 1/2 moles of 1 kg bottles of O2. What is the mass of O2 that you have? A. 9.033x10^23 kg B. 9.033x10^23 atoms C. 1.80x10^27 kg D. 1.806x10^24 moles
Answer:
b
Explanation:
trust
Answer:
B
Explanation:
What is the mass of 0.0071 moles of lead?
Answer: 1.47 g
Explanation:
207.2 g/mol × 0.0071 mol = 1.47 g
You can find the molar mass of lead, Pb, on the periodic table, 207.2 g/mol.
0.0071 moles lead = 1.47112 grams
Which of these statements is NOT true of the biosphere? *
A. It includes living things only.
B. It includes all of Earth's ecosystems.
.
C. It includes the parts of Earth in which organisms live.
Answer:
A is not true.
The biosphere contains living and nonliving things.
Let me know if this helps!
What is the molar mass of KAISiO4
(with work)
Answer: hmmmmmmmm ldk
Explanation:
PLEASEEEEE HELP ME ON QUESTION 8 ASAP!!!!!!!!!!!!!!!!!!! GIVING 20 POINTS
Answer:
I am pretty sure the correct answer is a reproductive system
What kind of reaction is this?
Na + AgNO3 --> NaNO3 + Ag
Answer:
oxidation-reduction reaction
Explanation:
na was oxidized and ag was reduced
ag^1 +1e = ag
na= na^1 +1e
How many atoms can be found in 6.7 moles of Bromine (Br)
Question 7 options:
4.03 x 10^24
9.13 x 10^-24
8.99 x 10^22
3.31 x 10^24
Answer:
The first one is correct, 4.03 x 10^24.
Work = Force x Distance, calculate the amount of work done on an object
when a 300 N force acts on an object for a distance of 10 meters.
Please help and show work thanks
Answer:
3000 Joules
Explanation:
as you mentioned, w=fd
where w is the work done, in this scenario in the unit of Joules
the force, or f, is given to be 300N
the distance, or d, is given to be 10m
because joules is simplified to Newtons times Meters, all we need to do in this case is plug the givens into the equation.
so, 300 Newtons x 10 Meters = 3000 Joules
is lemon juice a asid base or neutral?
plzz help mee
Answer:
Acid
Explanation:
The pH level is below 7
Question 1 (1 point)
A party balloon is filled up under the following conditions: 1.1 atm 65°C, 1,55 liters. Then, the balloon is taken to an outdoor wedding with
sightly different conditions: 1.2 atm and 92°C. What is the new size of the balloon?
Do not enter a unit, just the number
Round your answer to 2 sig figs.
Answer:
.5
Explanation:
Answer:
1.5
Explanation:
1.5