Chemistry High School

what unit of measure would i use to measure the width of my fingernail A millimeters
B centimeters C meters D kilometers
E grams​

Answers

Answer 1
A. Millimeters
Because the width of fingernails are very small and millimeters is the smallest unit of measurement listed.

Related Questions

Which of the following is the correct model of C7H16?
A.
B.
C.
D.

Answers

Answer:

D

Explanation:

Option D gives the correct model of C7H16. From the option, one will discover that the model has 7 carbons in the backbone. If you count the attached hydrogen, you will discover that the hydrogen is 16 in total.

This model or skeletal structure of this element represents heptane. Heptane or n-heptane is known to be a straight-chain compound and an alkane. It's chemical formula can also be written as: H₃C(CH₂)₅CH₃ or C₇H₁₆.

This compound is known to be one of the main components of gasoline. It is known to be a volatile organic compound and a clear and colorless liquids with a petroleum-like odor.

Answer: D

Explanation: Just took the test

25 cm of liquid 'A' and 20 cm of liquid
'B' are mixed at 25°C and the volume of
solution was measured to be 44.8 cm3
then correct reaction is
(A) A Hmix = 0, solution shows
ideal

Answers

Answer:

The correct option is;

(B) [tex]\Delta H_{mix} < 0[/tex], solution shows negative deviation

Explanation:

The given parameters are;

The available volume of liquid A = 25 cm³

The available volume of liquid B = 20 cm³

The volume of the solution (mixture) = 44.8 cm³

Therefore, we have;

[tex]\Delta _{mix} V < 0[/tex]

Which is one of the prerequisite for the formation of negative deviation

When a non-ideal solution shows negative deviation according to Raoult's Law, we have;

[tex]\Delta _{mix} H < 0[/tex], we have more heat released due to new molecular interactions.

How many moles are in a sample of 2.39 x 10^23 atoms of sodium (Na)

Answers

Answer:

The answer is 0.4 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\ [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{2.39 \times {10}^{23} }{6.02 \times {10}^{23} } \\ = 0.39700996...[/tex]

We have the final answer as

0.4 moles

Hope this helps you

Which types of matter are made of atoms

a. Mixtures
b. Elements
C. Compounds
D. All of the above

Answers

Answer:

D all above yes I think it's all above

Answer:  D

Explanation: All of the above.

Plz mark brainliest:)

Other Questions
Please answer this.. please Plz help Plz helpElla played a math game and had the five cards shown.7 0 -4 -10Her score was the sum of the numbers on these five cards. What was Ellas score?3235Not here Help pls idk pls pls and thank you I NEED HELP ITS URGENT!!! I WILL MARK BRAINLIST!! LOOK AT THE IMAGE ABOVE AND DO BOTH PROBLEMS BY SHOWING THE ENTIRE WORK!!Do NOT answer if you DONT know. This could lead to serious consequences. Ex: idk could lead to the monitor marking you to loose points. PLEASE HELP How did the trial of Peter Zenger in 1733 demonstrate the need for an impartial court system? Which narrative point of view is used in this excerpt from The Lilys Quest by Nathaniel Hawthorne?So one breezy and cloudless afternoon Adam Forrester and Lilias Fay set out upon a ramble over the wide estate which they were to possess together, seeking a proper site for their temple of happiness. They were themselves a fair and happy spectacle, fit priest and priestess for such a shrine, although, making poetry of the pretty name of Lilias, Adam Forrester was wont to call her "Lily" because her form was as fragile and her cheek almost as pale. As they passed hand in hand down the avenue of drooping elms that led from the portal of Lilias Fay's paternal mansion they seemed to glance like winged creatures through the strips of sunshine, and to scatter brightness where the deep shadows fell. Melanie had 3 pounds of dried fruit. She packed the dried fruit into bags of 3/8 pound each. How many bags of dry fruit does she pack? What is the measure of angle x? 62" X Why should someone seek professional help for issues related to mental health?A) to get out of classB) to develop dependence on othersC) to prevent thoughts of hopelessness D) to become friends with a professional what is a unit of electrical flow called Find the distance between each pair of points in the coordinate plane.(3,-2) and (2,-1) Deandre pays $15.20 for a pack of 8 towels.Find the unit price in dollars per towel.If necessary, round your answer to the nearest cent.Please help Workers have been down the street installing two blinking red lights in front of the fire station. The two lights are always turned on at the same time. Both lights blink as they are turned on. One lights blinks after every 8 seconds. The other light blinks every 22 seconds. After how many seconds will they blink together again? A country, called Simpleland, has a language with a small vocabulary of just the, on, and, go, round, bus, and wheels. For a word count vector with indices ordered as the words appear above, what is the word count vector for a document that simply says the wheels on the bus go round and round.Please enter the vector of counts as follows: If the counts were ["the"=1, on=3, "and"=2, "go"=1, "round"=2, "bus"=1, "wheels"=1], enter 1321211.1 point The discharge of chromate ions (CrO42-) to sewers or natural waters is of concern because of both its ecological impacts and its effects on human health if the receiving water is later used as a drinking water source. One way in which chromate can be removed from solution is by its reaction with ferrous ions (Fe2+) to form a mixture of chromic hydroxide and ferric hydroxide solids [Cr(OH)3(s) and Fe(OH)3(s), respectively], which can then be filtered out of the water. The overall reaction can be represented as CrO42- + 3 Fe2+ + 8 H2O --> Cr(OH)3(s) + 3 Fe(OH)3(s) + 4 H+How much particulate matter would be generated daily by this process at a facility that treats 60 m3/h of a waste stream containing 4.0 mg/L Cr, if the treatment reduces the Cr concentration enough to meet a discharge limit of 0.1 mg/L? The grandpapa car traffic function is shown check although following statements are true of the function An).is anything that increases the chances of an unhealthy outcome.A. risk factorB. action planC. health continuumD. habit In "A Warning Against Passion," what does Bront say can happen if a woman loves too much?a.she will go insanec.the man can begin to neglect herb.she will appear to be weakd.none of these Which is the IUPAC name for NO?nitric oxidebinitrogen oxidedinitrogen dioxidenitrogen monoxide ITS SUPER EASY PLEASE HELP ITS DUE IN AN HOUR PLEASEEEEEEEEEEEEEEEEEEEEEE