Answer:
distance traveled divided by the time it traveled
Explanation
this is just an equation for how to find speed. you can also just use like a meterstick and a stopwatch
whoever answeres all the questions will get brainliest question
question 1
why is steel not a mineral?
A. is it man-made
B. is it alive
c. is it found in nature
d. is it strong
question 2
which mineral is used to make pencils?
A. diamond
B. jade
c. graphite
d. calcite
question 3
wich mineral is used to make glass
A. emerald
b. quartz
c.copper
D. halite
question 4
wich mineral do we eat
A. silver
b. jade
c. quartz
d.halite
question 4 _____ is the hardest mineral and ____ is the softest
A. quartz, graphite
B. silver, gold
C. diamond , talc
d. halite, calcite
question 5
what is minerals streak
A. the color minerals streak
b. how much the mineral weighs
c. the shape of crystals
d. the color left behind when a mineral is
scraped on porcelain tile
question
question 6
all minerals break at the same time
a. true
b. false
Answer:
1. A
2. C
3. B
4. D
5. D
6. B
Explanation:
I'm not quiet sure on 5 but I'm pretty sure its correct
A solution has pH of 9 what is it?
Name the process by which oxygen moves from alveoli to blood
diffusion...........the blood through the capillaries lining the alveolar walls. Once in the bloodstream, oxygen gets picked up by the hemoglobin in red blood cells.
4. Based on their placement on the periodic table, which of the following is more
reactive?
A.Sodium (Na)
B. Magnesium (Mg)
C. Barium (Ba)
D. Neon (Ne)
Give three examples of energy traveling in waves
Answer:
ELECTROMAGNETIC SPECTRUM. Radios, televisions, mobile phones, and radar use signals made up of electromagnetic waves. These are waves that carry energy as electricity and magnetism at the speed of light. Light we can see is also an electromagnetic wave, but other types of electromagnetic wave are invisible.
Explanation:
~Hope this helps
Need help. Will pay if needed, or give away points. CHEMISTRY
Answer:
C. So electrons can flow from one electrode to another
Explanation:
An electrochemical cell is any cell in which electricity is produced by reason of a chemical change.
An electrochemical cell consists of two electrodes, these two electrodes are connected using a wire.
Usually, electrons flow from one electrode to another via this wire thereby enabling the electrochemical processes of oxidation and reduction in the cell to proceed effectively.
Select all of the HOMOGENEOUS mixtures from this list (click all that apply).
A. Paint
B. Chili
C. Blood
D. Soil
E. Salt water
Answer:
E is answer
Explanation:
salt water is the answer
Answer:
E.Salt water
Explanation:
Salt water is a homogeneous because the dissolved salt is evenly distributed throughout the entire salt water sample. The amount of salt in the salt water can vary from one sample to another.
Is Ca +O2 ?-->CaO balanced ? explain why or why not
Can someone pls pls help me with these questions?!?!
Answer:
13) What common form of energy (not including kinetic or potential) is not included in the “Energy Symbols” key that would normally be present in these examples?
1) Sound Energy
2) Magnetic Energy
14)Look carefully at each of the four systems shown above. Knowing what we have discussed about energy conversions, identify (list) at least three different places where this form of energy (sound) should be “produced”.
1) When you open the water tap, in the turbine and the sound of the light bulb.
2) In the light bulb
3) The sound of the kettle, the turbine and when water is boiling.
4) The movement of the wheel of the bicycle, the turbine and the light bulb.
Which type of changes are melting, freezing, and boiling?
Answer:
the changes are physical changes
if you traveled 100 miles in 5 hours what is your speed
Answer:
20 MPH (miles per hour)
Explanation:
You do miles / time (miles divided by time) to calculate the average speed!
Hope this helped ^^
How many mL of a 2.0 M CuCl2 solution are needed to make 500 mL of a 0.5 M solution?
Answer: There is 125 mL of a 2.0 M CuCl2 solution are needed to make 500 mL of a 0.5 M solution
Explanation:
Given: [tex]M_{1}[/tex] = 2.0 M, [tex]V_{1}[/tex] = ?
[tex]M_{2}[/tex] = 0.5 M, [tex]V_{2}[/tex] = 500 mL
Formula used to calculate the volume is as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]
Substitute the values into above formula as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}\\2.0 M \times V_{1} = 0.5 M \times 500 mL\\V_{1} = 125 mL[/tex]
Thus, we can conclude that there is 125 mL of a 2.0 M [tex]CuCl_{2}[/tex] solution are needed to make 500 mL of a 0.5 M solution.
What mass of potassium would need 2350 J of energy in order to raise its temperature from 44.3°C to 57.8°C? (cpotassium = 0.753 J/g°C)
Answer:
Explanation:
q = mCΔT
m =CΔT/q
ΔT = 57.8°C - 44.3°C = 13.5°C
m = (0.753*13.5)/2350
m = 0.00433 g
The mass of potassium that will need 2350 J of energy in order to raise its temperature from 44.3°C to 57.8°C is 231.17 g
Data obtained from the question Heat (Q) = 2350 JInitial temperature (T₁) = 44.3 °CFinal temperature of water (T₂) = 57.8 °CChange in temperature (ΔT) = 57.8 – 44.3 = 13.5 °C Specific heat capacity (C) = 0.753 J/gºC Mass (M) =?Q = MCΔT
2350 = M × 0.753 × 13.5
2350 = M × 10.1655
Divide both side by 10.1655
M = 2350 / 10.1655
M = 231.17 g
Learn more about heat transfer:
https://brainly.com/question/6363778
#SPJ2
Convert from °C to K. 13°C
Answer:
286.15 Kelvin
Explanation:
Answer:
286.15
Explanation:
Hope this helps, if its correct could you mark me as brainliest please?
Why do the two electrons spend their time equally between both hydrogen atoms? In other words, why can’t one hydrogen just take the other’s electron?
How would the number of atoms in a 2.02g sample of hydrogen compare to the number of atoms in a 32.00g sample of oxygen
Answer:
Number of atoms is equal.
Explanation:
1 mol of anything contains NA particles.
NA is known as Avogadro's number, 6.02×10²³
We determined the moles of each compound. Both molecules are dyatomic,
H₂ → 2.02 g . 1mol / 2.016 g = 1 mol
O₂ → 32 g . 1mol / 32g = 1 mol
Both have the same amount of moles.
In conclussion, the number of atoms is the same in both samples.
THIS IS ALSO PAST DUE PLEASE ANYONE HELP BRINLIEST GIVEN
Explain how limiting growth is advantageous for the goldfish’s survival in a home aquarium
Answer:
I dont know what ur answers are but mine are option a and b fish will not out grow the tank and Concentration of waste in the water does NOT become harmful to the fish.
Explanation:
What is the momentum of a motorcycle and a rider weighing 215 kg traveling at a speed of 62 meters per second?
Answer:
[tex]p=13330kg*\frac{m}{2}[/tex]
Explanation:
Hello there!
In this case, since the momentum of any body is calculated by multiplying the mass and the velocity:
[tex]p=m*v[/tex]
We simply need to multiply the 215 kg of the motorcycle by the velocity it has, 62 m/s to obtain:
[tex]p=215kg*62m/s\\\\p=13330kg*\frac{m}{2}[/tex]
Regards!
Determine the grams of water produced when 250 grams of barium hydroxide react
with 125 grams of HCI. Refer to the balanced equation below.
Ba(OH)2 (aq) + 2HCl (aq) --> 2H2O (l) + BaCl2 (aq) (balanced)
Answer:
Explanation:
Ba(OH)₂ (aq) + 2HCl (aq) --> 2H₂O (l) + BaCl₂ (aq)
171 g 2 x 36.5 g 2 x 18 g
73 g of HCl reacts with 171 g of Ba(OH)₂
125 g HCl reacts with 171 x 125 / 73 g of Ba(OH)₂
= 292.8 g of of Ba(OH)₂
Ba(OH)₂ available is 250 g , so it is the limiting reagent .
171 g of Ba(OH)₂ forms 36 g of water
250 g of Ba(OH)₂ forms 36 x 250 / 171 g of water
= 52.63 g of water.
Chemical properties of matter depend mostly on what?
Answer:
the types of atoms and bonds that a substance contains
Explanation:
Answer:
the types of atoms and bonds that a substance contains
Explanation:
what is electromagnetic?
Answer:
relating to the interrelation of electric currents or fields and magnetic fields.
an organism that gains energy by feeding on other organism is a
A. consumer
B. predator
C. prey
D. parasite
F. host
Answer: the answer is A
Explanation:
Answer:
The answer to your question is, A. consumer.
Explanation:
Any organism that 'consumes' other organisms is a consumer
down there (pls hurry!!)
An atom has 23 protons and 24 neutrons. Write both its NAME and it's SYMBOL using isotope notation.
Answer:
Vanadium is the name and the symbol is V #23
Explanation:
proper significant figure: 27.01 + 14.369
Answer:
put the bigger number on top then addExplanation:
41.369
The table below shows the speed of sound waves from musical sound sources at 20°C.
Which conclusion can be made based on the information in the table?
Wave speed and wave lengths can vary inversely to produce the same frequency.
Frequency and wave speed can vary directly to produce the same wavelength.
Wavelengths and frequency can vary inversely to produce the same wave speed.
Frequency and wave speed can vary directly to produce the same wave speed.
Answer:
C
Explanation:
Wavelengths and frequency can vary inversely to produce the same wave speed
Answer:
C) Wavelengths and frequency can vary inversely to produce the same wave speed.
Explanation:
edge
H2O2 (yield) H2O + O2
If 650 grams of hydrogen peroxide is allowed to decompose, how much water and
oxygen will be created? If 255 grams of oxygen are collected, what is the percent
yield?
How many grams of copper (II) oxide will react with 10 liters of hydrogen gas?
Answer:
maybe 200g
I don't know thats just a guess
HOPE ITS TURE
A 3.5L container has a gas pressure of 5.3atm. If the volume is decreases to 1.4L. What will be the new pressure inside the container?
Answer:
your answer for that problem is 34.5
Al hacer reaccionar 5g de cinc con ácido sulfúrico se observa que la reacción ocurre en 20s. ¿Cuál será la rapidez de la reacción? Masa atómica del cinc 65,37g.
Answer:
0.0038 mole s-1
Explanation:
La velocidad de una reacción se refiere a la rapidez o la lentitud con que avanza una reacción. Se mide por la cantidad de reactivos que desaparecen por unidad de tiempo o por la cantidad de productos que aparecen por unidad de tiempo.
Número de moles de zinc = 5g / 65.37gmol-1 = 0.076 moles
Velocidad de reacción = 0.076 moles - 0 moles / 20 s - 0s = 0.0038 mole s-1