Answers
explanation:
Answer:
it is C
Explanation:
I saw from Google. Hope it helps.
I cant get the full picture
sorry
Related Questions
In what type of inheritance do you see both traits on the same individual, but not
blended?
a. Incomplete Dominance
b. Codominance
c. Both
d. Neither
Answers
Which is a homogenous mixture?
1. ceasar salad
2. pre-cooked pizza
3. coffee in a cup
4. different color beads in a bowl
Answers
Answer:
ceasar said is a homogeneous mixture
Answer:
ceasar salad
need a top pick for another slide to talk about crystals
Answers
Answer:
tigers eyes
Explanation:
you need 16.66ml (+-0.01) of 53.4 (+-0.4)wt% of NaOH with a density of 1.52 (+-0.01)g/mL to prepare 2.00L of 0.169M of NaOH. What is the uncertainty in the molarity of NaOH. FM of NaOH=39.9971 g/mol. Neglect the uncertainty in the final volume and FM.
Answers
Answer:
The absolute uncertainty is approximately 1.69 × 10⁻³
Explanation:
The volume needed for NaOH needed to make the solution = 16.66 ml
The wt% of the added NaOH = 53.4 wt%
The volume of the NaOH to be prepared = 2.00 L
The concentration of the NaOH to be prepared = 0.169 M
The molar mass of NaOH = 39.997 g/mol
Therefore, 100 g of sample contains 53.4 g of NaOH
The mass of the sample = 16.66 × 1.52 = 25.3232 g
The mass of NaOH in the sample = 0.534 × 25.3232 = 13.5225888 g ≈ 13.52 g
Therefore;
The number of moles of NaOH = 13.52/39.9971 = 0.3381 moles
Therefore, we have 0.3381 moles in 2.00L solution, which gives;
The number of moles per liter = 0.3881/2 = 0.169045 moles/liter
The molarity ≈ 0.169 M
The absolute uncertainty, u(c) is given as follows;
[tex]u(c) = \sqrt{ \left (\dfrac{0.01}{16.66} \right )^2 + \left ( \dfrac{0.4}{53.4} \right )^2 + \left ( \dfrac{0.01}{1.52} \right )^2 } \times 0.169 \approx 1.69 \times 10^{-3}[/tex]
The absolute uncertainty, u(c) ≈ 1.69 × 10⁻³.
Which is a chemical property of oxygen?
1.It reacts with iron to form rust.
2.It is a gas at room temperature.
3.It expands when heated.
4.It combines to form O 2 molecules.
Answers
Answer: I think the answer is 1
i just learned this about two weeks ago
Explanation:
Plz help! This question is due in 10 mins!
Calculate the density of a 5cm3 cube of iron with a mass of 100 g
Answers
Answer: 20
Explanation: I’m in your class.
if 20 ml of carbon dioxide diffuse in 100 second what volume of ozone will diffuse in the same time under similar condition
Answers
volume of ozone : 19.15 ml
Further explanationGraham's law: the rate of effusion of a gas is inversely proportional to the square root of its molar masses or
[tex]\tt \dfrac{r_{CO_2}}{r_{O_3}}=\dfrac{\sqrt{M_{O_3}} }{\sqrt{M_{CO_2}}} }[/tex]
rate of CO₂ , M CO₂ = 44,01 g/mol
[tex]\tt r~CO_2=\dfrac{20~ml}{100~s}[/tex]
rate of O₃, M O₃ = 48 g/mol[tex]\tt r~O_3=\dfrac{x}{100~s}[/tex]
volume of ozone
[tex]\tt \dfrac{r~{CO_2}}{r~O_3}=\dfrac{\sqrt{48} }{\sqrt{44.01} }\\\\\dfrac{20}{x}=\dfrac{\sqrt{48} }{\sqrt{44.01} }\\\\x=\dfrac{20.\sqrt{44.01} }{\sqrt{48} }=19.15~ml[/tex]
How does a cold trap catch pollutants in smog?
Answers
Answer:
A temperature inversion occurs when air near the ground is relatively cool, and there is a layer of warmer air above it. That upper layer of warm air keeps the cooler air from rising, and traps all of the pollution in the cooler, lower layer.
Explanation:
Hope this helps
Crown me as brainliest:)
Could someone answer this for me?
Answers
Answer:
B
Explanation:
What is the independent variable in this experiment?
Answers
Answer:
D
Explanation:
because it was the variable that was changed in the experiment. distance was controlled and speed changed with time.
what is the energy
Answers
Answer:
what type energy?
Explanation:
5. On a 92 point test, a student scored 87 points. What is their percent error?
Answers
Answer:
Explanation:
5.7471264367816%
Mountain ranges are the result of many different
Answers
Answer:
yea that answer he gave is correct
Explanation:
Why do acids and bases neutralize eachother?
Answers
Answer:
Explanation:
When an acid and a base are placed together, they react to neutralize the acid and base properties, producing a salt. The H(+) cation of the acid combines with the OH(-) anion of the base to form water. The compound formed by the cation of the base and the anion of the acid is called a salt.
How do you convert in the metric system?
Answers
Answer:
To convert among units in the metric system, identify the unit that you have, the unit that you want to convert to, and then count the number of units between them. If you are going from a larger unit to a smaller unit, you multiply by 10 successively. If you are going from a smaller unit to a larger unit, you divide by 10 successively
Explanation:
hope it helps
In a science demonstration, a teacher mixed zinc (Zn) with hydrogen chloride (HCl) in a flask and quickly attached a balloon over the mouth of the flask. Bubbles formed in the solution and the balloon inflated.
What most likely occurred during this demonstration?
The Zn and HCl both retained their identity.
Either Zn or HCl, but not both, retained its identity.
Evaporation of one of the substances occurred.
One or more new substances formed.
Answers
One or more new substances formed.
Answer:
d
Explanation:
100 quiz
Which statement about sound waves is true?
They can be reflected.
Air travels with them
They travel throughoven
They exist only if heard
Answers
Answer:
Explanation:
They can be reflex lol
A chemical formula is shown below. How many total atoms are in 2 molecules of the chemical formula shown?
C6H12N2O
Answers
Answer: 42
Explanation: I took a quiz and had the same question.
PLEASE HELP 30 POINTS
Because the rock is irregularly shaped, you used the displacement method to measure its volume.
You used (______) to indirectly find the (_____) of the objects.
Options for the 1st fill in the blank:
- a balance
- calculations
- a graduated cylinder
Options for the 2nd fill in the blank:
- density
- mass
- area
Answers
Answer:
Because the rock is irregularly shaped, you used the displacement method to measure its volume. You used calculations to indirectly find the density of the objects.
PLZ Brainliest
Because the rock is irregularly shaped, you used the displacement method to measure its volume. You used calculations to indirectly find the density of the objects. Thus, option 1. b and 2. a is correct.
What is density?"Density has been defined as the ratio of the mass of the object to the volume of the substance." The mass of the object must be in grams and the volume is in the liter, milliliter, or cubic centimeter.
The density of the irregular-shaped rock can be calculated by the displacement method so that the volume of the rock can be estimated. The displacement method is used to calculate the volume of irregularly shaped objects. The formula is given as,
m = ρV
Here, m is mass, ρ is density and V is volume.
Therefore, the indirect calculation can be used to estimate the density.
Learn more about density, here:
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which describes the substances that form covalent bonds
Answers
Answer:
both Non metal's G
Explanation:
i did the test
In an isotope, what does the 'u' stand for?
For example: Lithium isotope: Li-6 6u
The u after 6
Answers
It is a unit of weight
Like we have kilograms,grams,milligrams, On the atomic level,the unit of weight measurement is AMU or just u for short.
AgF (aq) + KNO3 (aq) →
Answers
Answer:
AgF (aq) + KNO₃ (aq) → AgNO₃(aq) + KF(aq)
Explanation:
AgF (aq) + KNO₃ (aq) →
The products from the equation above can be obtained as follow:
1. AgF and KNO₃ will dissociate in solution as shown below:
AgF (aq) —> Ag⁺(aq) + F¯(aq)
KNO₃ (aq) → K⁺(aq) + NO₃¯(aq)
2. A double displacement reaction will occur between AgF and KNO₃ as illustrated below:
AgF (aq) + KNO₃ (aq) →
Ag⁺(aq) + F¯(aq) + K⁺(aq) + NO₃¯(aq) → Ag⁺NO₃¯(aq) + K⁺F¯(aq)
AgF (aq) + KNO₃ (aq) → AgNO₃(aq) + KF(aq)
A careful observation of the above equation shows that the equation is balanced.
SCIENCE A meteorologist uses a weather map to explain an upcoming change in weather. The map shows a blue line with triangles approaching a red line with semicircles. Based on the map, which weather prediction is most valid? (1 point) A a significant drop in temperature will occur across the area. B There is no chance of precipitation in the forecast. C Warm temperatures will replace cold temperatures. D Humidity levels will rise.
Answers
Answer:
The correct option is D) Humidity levels will rise
Explanation:
A rise in humidity means that it is most likely there is going to be a rain.
When blue semi-circle lines with triangles approach red semi-circle lines it is a situation where cold front is approaching a warm front.
The resultant effect is that the warm and cold air both come to a standstill. This will most likely trigger cloud and fog and may even lead to rain.
Cheers
What kind of investigation are best for demonstrating cause and effect
Answers
How does a hydra move?....In short form
Answers
Answer:
Hydras are generally sessile, but they can detach and move to another location by gliding slowly on their base. Sometimes they somersault, float, or use their tentacles to move along. ... If cut into several sections, a new Hydra will generate from each piece.
Explanation:
Answer:
Hydras are typically sessile, however they are able to detach and flow to every other place via way of means of gliding slowly on their base. Sometimes they somersault, float, or use their tentacles to transport along. ... If reduce into numerous sections, a brand new Hydra will generate from every piece.
A procedure calls for 0.250 kg of sugar. Your balance is in ounces. What mass in ounces should be weighed out on this balance?
Answers
Answer:
8.81849
Explanation:
i believe the whole number would be this but usually i round to the second decimal point, i dont know if you could do that in chemistry tho
Calculating Density A sample of a sub-
stance with a mass of 85 g occupies a vol-
ume of 110 cm What is the density of
the substance? Will the substance float
in water? Explain your answer:
Answers
Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{85}{110} \\ = 0.772727272...[/tex]
We have the final answer as
0.77 g/cm³The substance will float on water since it's density is less than that of water which is
1 g/cm³.
Hope this helps you
how many molecules are in 3.40L of H2O vapor at STP?*
Answers
Answer:
9.14 x 10^22 molecules
Explanation:
describe what you think will happen to a balloon that has been fully inflated and Port into a hot place explain your prediction
Answers
Answer:
Explanation:
A balloon if fully inflated and then placed close to a hot place is likely to blow. This would result from the increased air pressure inside the balloon. Increase in temperature leads to an increase in the energy of the air molecules which move at a higher speed and more collisions.May 11, 2018
What are the physical properties of gases, and how do they change under certain conditions?
Answers
Answer: Gases expand to fill their containers, have a fluid nature, low density, can be compressed, diffuse and effuse - move in small hole spray perfume .
Explanation:
Gases have such an unpredictable nature like fluid, very low density, can be condensed, disperse and effuse move in tiny hole spray fragrance, and they dominate far more room than the fine solids out of which they establish.
Because gases are harder to identify directly, gases are defined using four physical qualities or observable characteristics such as temperature, density, particles number, and volatility.
Learn more:
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