Which of the following describe glands? Check all that apply.

a structure that secretes substances through a duct

a thin layer that separates or connects structures inside the body

a structure that secretes hormones into the bloodstream

a structure usually made from connective and epithelial cells

Answers

Answer 1

Answer:a, c, d

Explanation: just did it on edge


Related Questions

100 POINTS HELP!!!!!!!!!!!!!!!!!!!!

Answers

Given that,

Mass number of Ge = 70

Then,

Atomic number of Ge = 32

No. of protons = 32

No. of electrons = 32

No. of neutrons,

→ 70 - 32 = 30

Answer:

30 is correct

Explanation:

70 - 32 = 30 mark as brainliest

How many protons does Lithium have?

Answers

Answer:

3 ................................

Answer: 3

Explanation:

yes

Which element is a gas?

A.Br
B.C
C.B
D.Be

Answers

The answer should be (B) C

Answer:

A.Br

Explanation:

Bromine is the only gas from the choices provided. It belongs to the group of halogens, group 7.

It has atomic number of 35 and it belongs to the p-block on the periodic table.

C is carbon and carbon is a solid matter B is boron and boron is a metalloid Be is beryllium and silvery white metal

Only Bromine is the gas from the given choices. It is fuming liquid and when exposed, it becomes gaseous.

How many grams of lithium hypochlorite (LiClO) are there in 0.649 mol ?

Answers

Answer:

37.9 or 38 grmas approximately

A black bear can run 35.0 mph how long will it take to run 1.95 x 10^4?
A. 129
B. 0.360
C. None of the above
D. 0.106
E. 13

Answers

Answer:

The correct answer is C. None of the above.

Explanation:

To determine how long the black bear will run, the distance it will travel must first be determined. Thus, the proposed calculation must be solved.

1.95 x 10 ^ 4

1.95 x 10 x 10 x 10 x 10

19.5 x 10 x 10 x 10

195 x 10 x 10

1950 x 10

19500

Thus, the bear will run 19,500 miles, so, running at 35 mph, it will take about 557 hours to run that distance (19,500 / 35).

why some metals are more dense than others

Answers

This is due to the tightly packed crystal lattice of the metallic structure. The larger the amounts of delocalized electrons, the stronger the metallic bonds are.

What is the density of a substance with a mass of 15.0 g and a volume of 5.0 mL?
A. 0.33 g/mL
B. 3.0 g/mL
C. 10.0 g/mL
D. 20.0 g/mL

Answers

Answer:

B. 3.0 g/ml

Explanation:

density formula: mass/volume

15/5=3

Which sample matter is a pure substance

Answers

Answer:

Explanation:

If you have options, could you please tell me so I can further help you. If you just need an example then

Examples of pure substances include iron, steel, and water

Hope this helps (:

Answer

These are the following answers

A) zinc oxide

B) sugar dissolved in water

C) pond water

D) soil

Explanation:

What else heats the Earth when Permafrost melts?

Answers

Answer:

As those microbes thrive, they will release large amounts of methane, another climate-warming greenhouse gas. ... By the year 2100, they estimated, thawing permafrost could release enough carbon dioxide and methane to raise the average global temperature by 0.13 to 0.27 degree C (0.23 to 0.49 degree F). pls mark me brainlest :(

Explanation:

How much space does 2 x 1022 atoms of copper take up?


How much space do 2 x 1022 copper pennies take up, using examples from the animation?

Answers

Answer:

2044

Explanation:

Predict: Note the type of reaction you expect for the reactants Kl and Pb(NO3)2

Answers

Answer:

double replacement

Explanation:

just did it

Answer:

Double replacement

Explanation:

Pls help I am confused my sister got me sweating

Answers

Answer:

Im pretty sure its B. is released by salivary glands.

Explanation:

The phase of matter most likely to be present at absolute zero would be:

A)
plasma
B)
gas
C)
liquid
D)
solid

Answers

Answer:

D solid

Explanation:

A sample of an ideal gas has a volume of 2.38 L at 283 K and 1.03 atm. Calculate the pressure when the volume is 1.97 L and the temperature is 307 K.

Answers

Gas Has A Volume Of 2.21 L At 287 K And 1.11 Atm. Calculate The Pressure When The Volume Is 1.03 L And The Temperature

Explanation:

Weather is not the same as climate. Which claim
identifies the main difference between these two concepts?
A. The main difference is how both are measured
B. Only weather includes information about the
temperature
C. Only climate includes information about
precipitation
O D. The main difference is the length of time over
which both are measured

Answers

Answer:

b. only weather includes information about the temperature

Substances which will glow in the dark after being exposed to sunlight are:
radioactive

photosensitive

luminescent

phosphorescent

Answers

Answer:

If something glows in the dark it is phosphorescent.

Explain how scientists know the composition of the bottom layer of the cust?

Answers

Answer: Scientists learn about the layers deep within the Earth's crust by studying how seismic waves travel through the Earth. If there is an earthquake somewhere, seismagraphs in many locations will record it.

HOPED IT HELPED IF IT DID CAN I HAVE BRAINLIEST AND GOOD LUCK.

What type of bond is present between two atoms of zinc in a nickel

Answers

Answer:

Pure covalent

Explanation:

To know the type of bond between two atoms you must find the electronegativity difference of them:

If electronegativity difference is:

< 0.4: Pure covalent.

Between 0.4 and 1.8: Polar covalent.

> 1.8: Ionic.

The electronegativity of Zn is 1.65 and Ni is 1.91. Electronegativity difference is:

1.91 - 1.65 =  0.26

That means the type of bond is:

Pure covalent

Which of the following is an example of a pure substance?
A. beer
C. halo-halo
B. ethyl alcohol
D. silver spoon​

Answers

Sliver spoon is an example of a pure substance

What molar concentration of hydrochloric acid (HCl) is needed to prepare a disinfectant solution with a pH

Answers

Answer:

The correct approach is "3.1×10⁻³ M".

Explanation:

As we know,

[tex]pH=-log[H_{3}O^+][/tex]

[tex]pH=2.5[/tex]

[tex][H_{3}O]^+= \ ?[/tex]

Now,

⇒ [tex]-log[H_{3}O]^+=2.5[/tex]

⇒ [tex][H_{3}O]^+=10^{-2.5}[/tex]

⇒             [tex]=3.1\times 10^{-3} \ M[/tex]

So that the needed molar concentration of HCL will be:

= [tex]3.1\times 10^{-3} \ M[/tex]

How many protons, neutrons, and electrons are in C -14

Answers

6 protons, 8 neutrons, and 6 electrons

3. Using the periodic table,
What is the average atomic mass of bromine?
What is the average atomic mass of magnesium?
How do your calculated answers in #1 and #2 compare to those on the periodic table?

Answers

Answer:

79.904 u for bromine

24.305 u

Not really sure what the 3rd question is asking

Explanation:

how many orbitals are in 6s sublevel

Answers

Each sublevel can have 6 electrons , basically 2 s orbital electrons 6 p orbitals electrons 14 f orbital electrons

Hope this helps.. if not sorry

The azimuthal quantum number and magnetic quantum number corresponds to the s orbital is zero. Hence, there is only one m value and thus contains one orbital only.

What are quantum numbers ?

The quantum numbers are numbers used to describe the position of an electron within an orbital. The principal quantum number n indicates the main energy level. The azimuthal quantum number l indicates the shape and type of orbital which have values from 0 to n-1.

The magnetic quantum number m indicates the number of orbitals for a sublevel. m can have values from + l to -l. The fourth quantum number s is called spin quantum number. For an electron the spin quantum number can be +1/2 or -1/2.

The n value for the 6s sublevel is 6. The azimuthal quantum number , l for an s orbital  is zero. So its m quantum number has only one value that is zero. Hence, there is only one orbital in 6s sublevel.

Find more on quantum numbers:

https://brainly.com/question/16979660

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The graph shows the average monthly rainfall for a
forested area.
In which month is a high alert for fire danger most
likely?

A. April
B. August
C. May
D. October

Answers

The answer is A. April

Answer:

The Answer would be A. April

Explanation:

Least amount of rainfall out of all the months we have to choose from.

Calculate the number of molecules in 2.00 moles H2S.
Express your answer numerically in molecules.

Answers

Answer:

The answer is

1.204 × 10²⁴ molecules

Explanation:

The number of molecules can be found by using the formula

N = n × L

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

N = 2 × 6.02 × 10²³

We have the final answer as

1.204 × 10²⁴ molecules

Hope this helps you

If 2.1 mL of 70.0% alcohol is added to 6.7 mL of water, what is the percent alcohol (%v/v) in the new mixture?

Answers

Answer:

Since we are adding more water to an alcohol solution,

the volume of alcohol in the alcohol will be the same but the volume percent of alcohol will decrease

Initial Volume of Alcohol in the solution:

We are given that 70% of the 2.1 mL solution is alcohol

So, Finding 70% of 2.1

70/100 * 2.1 = 1.470 mL alcohol

Volume of Water in the Solution:

In our initial solution, we have (2.1 - 1.47) mL water

and we add an additional 6.7 mL water in the solution

Hence,

the total amount of water in the solution = (2.1- 1.47) + 6.7

Total amount of water in the solution  = 0.63 + 6.7

Total amount of water in the solution = 7.33 mL

Volume of the final solution = 8.8mL

Percent Alcohol in the new mixture:

Now that we know the volume of alcohol and the volume of water in our mixture, we can now find the percent composition of alcohol

Percent of alcohol (%v/v) = Amount of alcohol / 100mL of solution

Percent of alcohol = (1.47 / 8.8) * 100

Percent of alcohol = 0.167 * 100

Percent of alcohol = 16.7

Therefore, in a 100mL solution, we will have 16.7 mL alcohol

A mineral breaks into cubes when struck with a rock hammer. It also leaves a red trail when scraped against an unglazed porcelain plate.

Which of the mineral's properties are being measured?

Choose the two correct answers.


streak

color

cleavage

hardness

Answers

The two properties which can be measured from the given information are streak and cleavage of the mineral.

What are minerals?

Minerals are naturally forming inorganic substances having crystal structure and metallic characteristics. They have a definite chemical composition and  homogeneity.

Streak is the color of powder form of mineral and cleavage is how the mineral cleave when we cut through a plane.  Hardness says how much hard the solid is.

When the mineral breaks into cubes when struck with a hammer, we measure its cleavage properties. The red trail on scrapping indicates the streak of the mineral.

Hence, the two properties we can measure from breaking by hammer and scrapping by an unglazed porcelain are its cleavage and streak.

To learn more about minerals, refer the link below:

https://brainly.com/question/18078524

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chemistry question please help

Answers

Answer:

AR(18)  

Explanation:

Try that it should work

                                                                                                                                         *(

I NEED HELP ASAPPPP!!!!

Is a styrofoam ball heavier than a rock?
Is water heavier than a ping pong ball?
Is a gold ring heavier than a pencil?
Is oil heavier than water?
Is a large log heavier than a small rock?

Answers

Answer:

Styrofoam could be heavier than a rock depending on how much weight you put on it,

Water is heavier than a ping pong ball,

A gold ring is not heavier than a pencil,

Oil is heavier than water because of the combined mass.

A large log is heavier than a small rock.

Explanation:

Which of the following is an example of work: bowling or reading? How do you know?

Answers

Both.. I know because reading you have to focus on the book and actually make your mind read the book and process what you are reading... Bowling is also an example of work because you have to focus on the ball and focus on where you roll the ball
I hope this helps! HAVE A GREAT DAY!!
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