Does anyone know the ones that are blank

Does Anyone Know The Ones That Are Blank

Answers

Answer 1
What is it asking for?
Answer 2

Answer:

yeah whats it asking for

Explanation:


Related Questions

A structure that contains a watery fluid which protects the embryo/fetus is 7 7 point
known as? *
chorion
amnion sac
uterus
cervix

Answers

Answer:

and unborn baby

Explanation:

an unborn baby

Tbh a thing amnion sac sorry if wrong

For the autoionization of water at 25°C, H2O(l) <---> H+ (aq) + OH-(aq)

Kw is 1.0 X 10^-14. What is (Delta Gº) for the process? ​

Answers

Answer:

ΔG° = 80 Kj/mole

Explanation:

ΔG° = -R·T·ln(Kw)

R = 0.008314 Kj/mol·K

T = 25°C = 298K

Kw = 1 x 10⁻¹⁴

ΔG° = -R·T·ln(Kw) -(0.08314Kj/mol·K)(298K)ln(1 x 10⁻¹⁴)

= -(0.008314)(298)(-32.2)Kj/mole

= 79.78Kj/mole ≈ 80Kj/mole (1 sig.-fig.)

The change in free energy for the autoionization of water at 25°C is -79.9 KJ

Using the formula;

ΔG = -RTlnK

ΔG  = change in free energy = ?

R = gas constant = 8.314 J/K/mol

T = temperature = 298 K

K = equilibrium constant = 1.0 X 10^-14

Substituting into the given formula as;

ΔG = -  (8.314 J/K/mol × 298 K × ln(1.0 X 10^-14))

ΔG = -7.99 × 10^4 J/mol or -79.9 KJ/mol

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Calculate the number of atoms in 0.50 moles of Barium

Answers

One mole of Ba: 137.33 grams
.5 * 137.33 = 68.67

Choose the correct option

Answers

Answer:

C

Explanation:

Hope this helps.

A mixture of Oxygen and Hydrogen occupies a pressure of 101.3kPa. The pressure of Hydrogen is 56kpa. Calculate the pressure of oxygen.

Answers

Answer:

45.3 KPa

Explanation:

From the question given above, the following data were obtained:

Total pressure (Pₜ) = 101.3 KPa

Pressure of Hydrogen (Pₕ) = 56 KPa

Pressure of Oxygen (Pₒ) =?

The pressure of oxygen in the mixture can be obtained as follow:

Pₜ = Pₕ + Pₒ

101.3 = 56 + Pₒ

Collect like terms

101.3 – 56 = Pₒ

Pₒ = 45.3 KPa

Thus, the pressure of oxygen in the mixture is 45.3 KPa

What type of decay does Am-241 undergo to become Np-237?

a. Alpha decay

c. Positron emission

b. Beta decay

d. Electron capture

Answers

i think it’s positron emission

The type of decay that Am-241 undergoes to become Np-237 is alpha decay. The correct option is a.

What is alpha decay?

Alpha decay is a type of decay or transformation in which a nucleus emits an alpha particle and change into different atomic nuclei. The atomic number reduces by 2 and the mass is reduced by 4.

Am-241 is an isotope of the chemical element americium. It is a radioactive element and its radioactive decay period is 432.2 years. It is used in the testing of machinery.

When the nucleus of Am changes or emits a radioactive particle. It converts into Np-237. The process is called alpha decay. The atomic mass is reduced by four, and the 241 converts into 237, which become neptunium.

Thus, the correct option is a. Alpha decay.

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What drives the flow of energy in cycling of matter in the atmosphere

Answers

The earths rotation if I’m not mistaken

La leche se considera un alimento basico por su elevado contenido de nutrientes su densidad es de 1,4g/ml. Si se hace una compra de 7 bolsas de leche cada una con un volumen de 900m cual es la masa total de la leche expresada en kilogramos?

Answers

Answer:

8.82 kg es la masa total de leche

Explanation:

Consideraremos que el volumen de cada bolsa de leche es de 900 mL.

Sabiendo que tenemos en total 7 bolsas, el volumen final en litros que tenemos disponible es de:

900 mL . 7 = 6300 mL

Utilizando la densidad podemos calcular la masa de leche que tenemos en el total de las 7 bolsas

Densidad = masa / volumen

Densidad . volumen = masa → 1.4 g/mL . 6300 mL = 8820 g

Convertimos la masa de gramos a kg

8820 g . 1 kg /1000g = 8.82 kg

PLEASE HELP!!!!!!!! I DO NOT UNDERSTAND

Answers

Answer:

A, B, C

Explanation:

Answer:A, b, c

Explanation

HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP ​​

Answers

Answer:

but what is your question? it's just like the moon going around earth while earth along with all the other planets revolve around the sun

Explanation:

Find a room that can be made completely dark. In the room, tape the pieces of construction paper on a wall, slightly above eye level. Turn on the flashlight, and turn off the lights in the room. Hold the flashlight over your head and angle it down slightly so the light hits the colored paper. Can you see the light traveling through the room before it hits the paper?

Answers

Answer:

Yes, I can see the light traveling through the room before it hits the paper.

Explanation:

edmentum

Since light rays travels in a straight line, the light traveling through the dark room can be seen before it hits the paper.

What are light rays?

Light rays refers to a straight line path through which light waves travel.

Light rays travel in a straight line and this phenomenon is known as the rectilinear propagation of light.

In a dark room, the path of light rays travelling in a straight can be seen.

Therefore, the light rays traveling through the room can be seen before it hits the paper.

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A chemical reaction can theoretically produce 137.5 grams of product, but it actually produced 112.9 grams. Which is the percent yield for this reaction? AKS 4f

Answers

Answer:

Explanation:

Zoom in we can't see it dude

answer: 26.6%

explanation: actual yield - theoretical yield x 100%
112.9-137.5x100%= 26.6%

Which statement best describes the polarity of the molecule Sil4?

Answers

Answer:

I dont a picture

Explanation:

but the answer is 24

The equation below shows the decomposition of lead nitrate. How many molecules of PbO are produced when 11.5 g NO2 is formed?
2Pb(NO3 )2 (s) → 2PbO(s) + 4NO2 (g) + O2 (g)

Answers

Answer is in the file below

7. A sample of helium gas occupies a volume of 24.6 L at 2.20 atm. What would its volume be at 3.50 atm?
Answer: 15.5L

Please show your work

Answers

so, here's your answer, 15.5L (appr)

If you try to place the compound on the pan over the flame, what could possibly happen? Explain your answer. [2 marks] anyone please help me!!:(​

Answers

Answer:

it will probably flame up or explode or maybe start boiling

2. Have you ever seen a natural event that surprised

you? Why was it surprising?

Answers

Answer:

I have seen many lightning storms before. However, one of the most surprising ones was when I was at my house. It was around midnight when I awoke from the sound of lightning in the distance. I was also half awake so this could be another reason this was the most surprising, but lightning struck near my area. i could see the light through my curtains and the sound was loud enough to awake everyone in my house, even the deep sleepers. I practically jumped out of bed.

I’ve seen an tornado. It was surprising because I didn’t think they would be a big or dark as they really are.

A clownfish uses a sea anemone as a safe place to live. While living there, the clownfish lures in food for the anemone. This is an example of what type of relationship?

Answers

do you possibly have a picture by vhanec?

In order to form water, two hydrogen atoms and one oxygen atom must be

A. dissolved.
B. bonded.
C. divided.
D. mixed.

Answers

Answer:

B bonded

Explanation:

Two molecules of hydrogen gas (two hydrogens bonded together) are combined with one molecule of oxygen gas (two oxygen atoms bonded together) in order to form two molecules of water (two hydrogen atoms bonded to one oxygen atom). What are covalent bonds? Covalent bonds occur when two or more atoms share electrons.

In order to form water, two hydrogen atoms and one oxygen atom must be bonded. The correct option is B.

What are covalent bonds?

Covalent bonds between two or more atoms occur when they share electrons. with each other.

Two molecules of hydrogen gas are combined with one molecule of oxygen gas which forms two molecules of water. Hydrogen take one electron and oxygen can donate two electrons. One oxygen shares two electron with two hydrogen with one electron gaining capacity.

Thus, in order to form water, two hydrogen atoms and one oxygen atom must be bonded. The correct option is B.

Learn more about covalent bond.

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When an atom loses an electron, the resulting charge on the atom is ____

Answers

Answer:

Positive

Explanation:

The atom will gain a positive charge by losing an electron

Answer:

cation

Explanation:

Obtaining crude oil for refining is an example of
A. Constructive occupation
B. Extractive occupation
C. Manufacturing occupation
D. Tertiary occupation
E. Service occupation

Answers

Answer:

B: extractive occupation

help me with this pleasee

Answers

1-Addition 2-Substituted 3-deleted

Which of the following is the conjugate base of HPO42-?

Answers

Answer:

A. PO4^3-

Explanation:

took the quiz on a pex

The conjugate base of HPO₄²⁻ is PO₄³⁻. Therefore, option (A) is correct.

What is the Bronsted-Lowry concept?

The Bronsted-Lowry concept can be explained as an acid-base reaction where base and acid react with each other and by an exchange of proton acid, forms its conjugate base and the base generates its conjugate acid.

The Bronsted-Lowry theory is an extended version of Arrhenius's theory of acid-base. According to this concept, acid can be defined as a substance that donates a hydrogen ion or a proton and produces its conjugate base and the base can be defined as a substance that accepts a proton and creates its conjugate acid.

Bronsted-Lowry acid in the dissociation form can be represented as:

Acid   ⇄   Conjugate base +   H⁺

The conjugate base of Bronsted-Lowry acid HPO₄²⁻ can be represented as follows:

HPO₄²⁻   ⇄  PO₄³⁻ +   H⁺

Therefore, PO₄³⁻ is the conjugate base of the Bronsted-Lowry acid HPO₄²⁻​.

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which process helps guarantee that a species continues to involve over hundreds of years?

A. growth

B. nutrition

C. reproduction​

Answers

Answer:

C. reproduction​

Explanation:

3. Convert 273.0 g of lead into moles.

Answers

Answer:

1.3175675675675604

Explanation:

does this need to be rounded?

WDYT a mixture is? Please help

Answers

Answer:

A mixture is when two substances are physically combined and can be taken apart.

Explanation:

my words

During the daytime, we can see things because the sun is giving off
heat energy
light energy
sound energy
electrical energy

Answers

Answer:

light energy

.................

Answer:

light energy

Explanation:

heat does not effect how we see

the sun does not have sound

electrical energy does not effect how we see

How many mililiters are in 0.5000 liters?

Question 6 options:

50 ml


500 ml


0.5000 ml


5,000 ml

Answers

500ml you multiply the volume value by 1000

Which of the following statements is true? Running an electric current through a magnet can create a magnetic field, Electrons are found in the nucleus of an atom, The strength of a magnetic field increases with distance, Electric engines change electricity into magnestism

Answers

Answer:

running an electric current through a magnet can create a magnetic field

PLS ANSWER FAST WILL GIVE BRAINLY!!!!


dissolving sugar into coffee is a chemical change

true or false

Answers

False because the sugar is just changing it’s form
False. Because no matter how it’s mixed it’s still the same substances. Freeze it and it’s still coffee and sugar. Evaporate the water and it’s still coffee and sugar.
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