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Science
Page 6
Questions (161,143)
What is the surface tension of water at 23 degrees Celsius?
5 answers
asked by
Jane
2,510 views
A lake may be polluted with Pb2+ ions. what precipitation reaction might you use to test for the presense of Pb2+?
4 answers
asked by
Josh
1,817 views
Use the scenario to answer the question.
A student is examining scientific evidence to support the following claim. “Life is
4 answers
asked by
tallie
456 views
Frequency is measured in hertz . Which option best describes hertz
4 answers
asked anonymously
530 views
Which statement is true about DNA? (1 point)
• DNA cannot be analyzed in extinct organisms. DNA sequences can be encoded to
1 answer
asked anonymously
101 views
Can the law of conservation of mass be applied when cooking? In one to two sentences, explain why.
7 answers
asked anonymously
82 views
Which electromagnet will produce the strongest magnetic force.
1 answer
asked anonymously
56 views
Did you find a relationship between changes in pH, surface temperature, water clarity and dead zones?(1 point)
Responses Yes,
1 answer
asked anonymously
116 views
Calculate the mass of Mg metal required to consume 2560g of CO2 in the reaction. 2Mg+CO2_2MgO+C
6 answers
asked by
Asad khan
4,912 views
In the Dark - Quick Check
1. Weakly interacting massive particles/black holes/massive compact halos 2. Scientists have hypotheses
5 answers
asked by
Hey Lover <3
2,457 views
A blacksmith strikes a piece of metal with a hammer repeatedly. The metal slowly begins to glow as the temperature increases,
15 answers
asked by
PLZ HELP
4,738 views
what evidence supports the big bang theory?
7 answers
asked by
xiomara
5,923 views
Waves Unit Test
1 of 141 of 14 Items Question Use the diagram to complete the statement. An illustration shows the propagation of
39 answers
asked by
who dat
2,891 views
A metal pot with hot soup in it is placed on a cool stone countertop, as shown in the diagram below.
The numbered arrows show the
4 answers
asked by
redredered
528 views
Write the balanced equation for vandadium (II) oxide with iron (III) oxide results in vanadium (V) oxide and iron (II) oxide.
2VO
5 answers
asked by
Hayden
5,779 views
What is kinetic energy
12 answers
asked by
Arnny
2,528 views
how many moles of iron would have been used up if 45.0g of copper were to be produced?
is it # mols Fe = 45.0gCu x 1mol/63.5g =
7 answers
asked by
Lily
3,281 views
activity to demonstrate the fact that for a metallic wire of uniform material density and thickness, the resistance increases
4 answers
asked by
yash
855 views
Using the information below, which answer lists the salts in order of increasing solubility?
PbSO4 Ksp = 1.6 x 10^-8 PbS Ksp = 8
4 answers
asked by
Christine
871 views
A student investigated the effect of root space on plant growth. The student grew two groups of plants of the same variety. Both
1 answer
asked by
TEEZY
255 views
A scientist discovers a fossil of an animal and places it in the fossil record. The organism’s bones are similar to the bones
1 answer
asked by
quandale dingle
261 views
suggest a reason why plastic article first coated with graphite
4 answers
asked by
julia sedupenyane
369 views
which of the following has the highest boiling point?
a)C2Cl6 b)C2Br6 c)C2H6 d)C2F6 e)C2I6 i know its e, but why is that the
6 answers
asked by
RiChy
12,342 views
Two radioactive isotopes are extracted from spent nuclear fuel and placed in a metal container, which is then
sealed and
7 answers
asked by
Amanda.
3,416 views
The surface of which material is least likely to reflect light?(1 point)
Responses pillowcase sheet of metal mirror water
6 answers
asked by
Anonymous ;)
573 views
The genetic engineering of crops is a controversial and debated issue in the media and press. Which of the following would be an
44 answers
asked by
bot?
337 views
I noticed it was hard to check my answers on Black holes quiz in science so here are the answers
Where could scientists look to
8 answers
asked by
Science hero
4,713 views
Why is thermal energy (heat) required to freeze ice into crystals?
Responses- a- Heat must be absorbed by the reactants and the
3 answers
asked by
Someone
189 views
what is the difference between mass and weight?
The mass of an object is the amount of matter it contains, while its weight is a
15 answers
asked by
Nick J.
7,779 views
Which best describes the relationship between climate change and global warming?(1 point)
28 answers
asked by
❤
3,780 views
I need help with Classification Unit Test 9th grade semester B the first question is ( Bords are uniquely classified from other
38 answers
asked by
Angel of God
2,168 views
How did the Industrial Revolution impact the population of peppered moths in Britain? (1 point)
The Industrial Revolution caused
6 answers
asked by
koala
2,278 views
i need help with theLesson 19: Biodiversity Portfolio
Science 6 B Unit 6: Biodiversity
12 answers
asked by
PLZ HELP ME
1,464 views
X-ray technicians wear protective gear to keep them safe from the X-rays. Why are X-rays dangerous?(1 point)
Responses They have
4 answers
asked by
osihxbdy8cgbefgb8y
245 views
How much energy is released when 2.05 mol of water vapour at 100C condenses with no change in temperature?
5 answers
asked by
Anonymous
1,417 views
Which type of intermolecular forces would be expected in a sample of F2 gas?
a. London forces, dipole interactions, and ionic
5 answers
asked by
Christine
4,349 views
Two reasons why displacement method is not suitable when determining the volume of a charcoal?
5 answers
asked by
Michael
2,831 views
Mno4- + So3-2 = Mno2 + sO4-2 (OH-) solve this redox reaction and give me the method also
4 answers
asked by
kiara
16,596 views
Name two metals which form both soluble trioxocarbonate (iv) and soluble tetraoxosulphate (vi)
4 answers
asked by
Nicola
900 views
Is carat earrings homogeneous mixture or heterogeneous mixture?
4 answers
asked by
Lwandile
909 views
how much copper sulphate will require saturating 80 grams of water at 20 degree celcious .if solubility of copper sulphate at
4 answers
asked by
diwas pathak
1,231 views
Compared to wave A, wave B has a _____.
(1 point) Responses longer wavelength and greater frequency longer wavelength and greater
2 answers
asked by
your boy
67 views
Why is glass a good insulator?(1 point)
Responses The atoms in glass hold on tightly to their negatively charged particles. The
1 answer
asked by
baby weiner
87 views
Question 4
Three different bird species are represented by the letters R, S, and T. Species S and T show similar coloration. The
1 answer
asked anonymously
61 views
The final section, "When Is the Next Solar Eclipse?," contributes to the overall meaning of the text by providing concrete
1 answer
asked anonymously
104 views
What is most likely to happen if predators are introduced into an ecosystem with no known predators
1 answer
asked anonymously
43 views
what kind of galaxy is the milky way?
7 answers
asked by
frank
2,944 views
Which observation most likely indicates that a physical change has taken place?(1 point)
A. A reaction occurs. B. An odor occurs.
38 answers
asked by
Anonymous
20,106 views
Providing Evidence Quick Check
3 of 5Items Item 3 Which is the best evidence to support the sentence? Wildfires are essential to
23 answers
asked by
gurl
10,426 views
What factors caused the correlation between the reduction in skin pigmentation in humans and migration of human populations away
4 answers
asked by
lalala
288 views
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