Could someone answer this for me?

Could Someone Answer This For Me?

Answers

Answer 1
A is the answer as they both are solid at room temp.
Answer 2

Answer:

B

Explanation:


Related Questions

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:)

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.

Which metals have similar chemical properties?
barium
beryllium
rubidium
radium
titanium
calcium
platinum

Answers

Answer:

Barium

Beryllium

Radium

Calcium

Explanation:

What kind of investigation are best for demonstrating cause and effect

Answers

Experimental investigations are the best type of scientific investigation to demonstrate cause-and-effect relationships because they allow the investigator to actively manipulate variables and control conditions.

what acts as a buffer for seawater ?

Answers

Answer:

The bicarbonate and carbonate ions.

Explanation:

Probably not he answer your looking for though. So, CO2.

Bicarbonate hope this helps

which describes the substances that form covalent bonds

Answers

Phosphorus and chlorine bond to form phosphorus trichloride

Answer:

both Non metal's G

Explanation:

i did the test

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

how many molecules are in 3.40L of H2O vapor at STP?*

Answers

Answer:

9.14 x 10^22 molecules

Explanation:

Which step in the Scientific Method should be done after asking a question and before developing a hypothesis? A)analyze the data
B)communicate findings
C) conduct background research D)design an experiment​

Answers

This is so frustrating I don’t even understand this
I believe the best answer for this would be D) no matter what it can be A or B and C wouldn’t make much sense so D) design an experiment

In an isotope, what does the 'u' stand for?
For example: Lithium isotope: Li-6 6u
The u after 6

Answers

The u is called atomic mass unit.
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.

What are alternative periodic tables

Answers

Tabulations of chemical elements differing in their organization from the traditional seen periodic system

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.

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:

https://brainly.com/question/6107689

#SPJ2

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

Mountain ranges are the result of many different

Answers

Answer:

yea that answer he gave is correct

Explanation:

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

, glucose is converted into what three products? science

Answers

Answer:

carbon dioxide, water, sunlight

2 ATP, 2 NADH, and 2 pyruvate.

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.

what is the energy ​

Answers

Answer:

what type energy?

Explanation:

need a top pick for another slide to talk about crystals

Answers

Answer:

tigers eyes

Explanation:

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

B. Codominance .....

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:

https://brainly.com/question/1369730?referrer=searchResults

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:

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/cm³

The substance will float on water since it's density is less than that of water which is

1 g/cm³.

Hope this helps you

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 explanation

Graham'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]

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.

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.

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

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

Other Questions
An electronic store orders cell phone covers for $14.85. The store sells each phone case for$19.90. What is the percent of markup? During the summer season, a jet ski rental company charges a 12% registration fee to reserve a jet ski thatrents for $90. How much is the fee? Hydrogen is found as a gas on Earth but exists in all four states in the solarsystem. Four samples of hydrogen have equal masses but are each in adifferent state. Which statement about the relative amounts of thermalenergy in the samples is true? Solve the equation, justifyeach step with an algebraicproperty.10 + 8x = -78 Write three questions on how Christianity spread through Europe. why is soaking necessary for seed germination The standard deviation from the National Health and Nutrition Survey is 1.29 hours. What is the variance (rounded to the hundredth place) ? THE IPHONE 12 LOOKS JUST LIKE THE 11 BUT WITH MORE CIRLCES IN THE CAMERA where was the first center of agriculture south america B southwest Asia c Africa D Europe Which is NOT TRUE about upland landscape positions?A May be subject to erosionB Normally the oldest and most strongly developedC Area of accumulation of soil materialD Includes summits and side-slopes On July 8th, I will be 8.51472x108 seconds old. How old will I be in years? (Assume 365 days in a year.) step by step M is the midpoint of segment AB. If A is at (2,5) and M is at (7.8) What is 192/8? Solve then evaluate. 7th grade math help me pleasee The reverse of the process of sublimation is calleda freezing.b vaporization.c deposition.d condensation.Science 12X12+12-12=answer is: Solve 210 30 = ___ using mental math. 7 70 700 7,000 First to answer both CORRECTLY gets brainleist! Park Corporation is planning to issue bonds with a face value of $710,000 and a coupon rate of 7.5 percent. The bonds mature in 8 years and pay interest semiannually every June 30 and December 31. All of the bonds were sold on January 1 of this year. Park uses the effective-interest amortization method and also uses a discount account. Assume an annual market rate of interest of 8.5 percent. (FV of $1, PV of $1, FVA of $1, and PVA of $1) (Use the appropriate factor(s) from the tables provided. Round your final answer to whole dollars.) Required 1. Prepare the journal entry to record the issuance of the bonds. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.) i need this answer as soon as possible or i'll be grounded