HELP ASAP DUE IN 5 MINUTES

HELP ASAP DUE IN 5 MINUTES

Answers

Answer 1

the second one i think, hope this helps

Answer 2

Answer:

 a

Explanation:


Related Questions

What are the steps needed to calculate the percent composition of Carbon in CH4

Answers

CH4 : Mr. 12+(1x4) =16
C= 12
12/16 x 100 =75%

PLEASE ANSWER BY 9:00pm PT

“A person takes in a breath of 450.0 mL air at 756 mmHg and -10.0°C. Assuming that amount and pressure remains constant, what is the volume of air when it warm to body temp (37.0°C)? (Convert °C to Kelvins (+273))”
- my chem teachers question

The given answer is 58.9 mL

I didn’t know how to get to that conclusion
And I have to show my work

Answers

Answer:

thanks to all the mortal those who are born must die one day that it cut in cannot be avoided as ripe fruit fall of the tree so it is common to all the mortal those who are born must die one day that it cut

Explanation:

silghjnb bj i bb b nv bv hc U and lamenting produce a few of the tree so much for your time is common to both of us ☺️ to all the said that death of the tree so it cut in cannot be avoided as well as well but the mortal Kombat X the said

14) For the reaction P4(s) + 6 Hz(9) — 4 PH3(g)
a) f 15 g of Pe were used, how many liters of PHs were produced?
b) How many liters of H2 are required to completely react with 15 g of P4?
c) How many grams of PHs will be produced if 6.0 L of H2 are used?
Molar Mass of P4: 1 mol P4 =
g
a)
L PH3
b)
L H2
Molar Mass of PH3: 1 mol PH3 =
9
c)
g PH3

Answers

The correct answer is b

5. A box with a volume of 22.4 L contains 1.0 mol of nitrogen and 2.0 mol of hydrogen at 0°C. Which of the following statements is true?

A. The total pressure is 202 kPa.

B. The partial pressure of N2 is 101 kPa.

C. The total pressure in the box is 101 kPa.

D. The partial pressures of N2 and H2 are equal.

Answers

B. The partial pressure of N2 is 101 kPa

Further explanation

Given

volume = 22.4 L

1.0 mol of nitrogen and 2.0 mol of hydrogen at 0°C

Required

Total pressure and partial pressure

Solution

Ideal gas law :

PV = nRT

n total = 3 mol

T = O °C + 273 = 273 K

P = nRT/V

P = 3 x 0.08205 x 273 / 22.4

P total = 3 atm = 303,975 kPa

P Nitrogen = 1/3 x 303.975 = 101.325 kPa

P Hydrogen = 2/3 x 303.975 = 202.65 kPa

Answer:The partial pressure of N2 is 101 kPa

Explanation:

Calculate the molar concentration of 4.75 moles of NaCl in
0.50 liters of water?

Answers

Answer:

9.5 m

Explanation:

First, divide 4.75 m by the 0.50 l

4.75/0.50

This leaves you with 9.5 m

If two kids kick the ball at the same time what is the motion on the ball will do?​

Answers

Explanation:

I think your correct it's A!!

Find the amount of atoms from 128 grams of NaCl?

Answers

Answer:

13.25 ×10²³ atoms

Explanation:

Given data:

Mass of NaCl = 128 g

Number of atoms = ?

Solution:

First of all we will calculate the number of moles of NaCl.

Number of moles = mass/molar mass

Number of moles = 128 g/ 58.4 g/mol

Number of moles = 2.2 mol

Number of atoms:

1 mole of any substance contain 6.022×10²³ atoms.

2.2 mol × 6.022×10²³ atoms / 1mol

13.25 ×10²³ atoms

How are a carrot, an amoeba, and a bacterium alike?


They are prokaryotes.


They are eukaryotes.


They are all made of cells.


They all live in soil.

Answers

#3 is the right one I believe

Answer:

c they are all made of cells

Explanation:

that's the only similarity

Can someone please help me quickly!!!

Answers

Answer:

Mercury

Explanation: Under standard conditions mercury is a shiny, heavy, silvery liquid. It is the only metal that is liquid at room temperature.

Answer:

Mercury, Venus, earth and mar, Jupiter, Saturn, urines, Neptune.

Explanation:

pleaseeeee I really need help :3​

Answers

Answer:

C. 5 inches

Explanation:

don't worried, i learned that from my teacher

help me out please!?

Answers

Answer:

area a

Explanation:

How many atoms of helium are present in 0.366g He?

Answers

Answer:

Explanation:

mass of one atom of helium-4 is one-third the mass of one atom of carbon-12. You can find ... mass He. 1 mole He. 4.00 g He. -= 0.366 g He. 0.0914 mothé x 1 motte. Helium ... How many moles of oxygen atoms are present in 5.00 mol diphos-.

What is the control center or “brain” of a cell called?

Answers

Answer: The nucleus is often referred to as the control center, or brain, of the cell and contains the DNA, or genetic material. The nucleus is surrounded by the nuclear envelope. ... Human cells are eukaryotic cells.

Explanation:

Answer:

Nucleus

Explanation:

not to good at explaining but I'm hoping this is right!

How many grams of CO2 can be produced from 150 grams of O2?
C3H8 + 5 02
->
3 CO2 + 4H2O

Answers

Answer:

120 g CO₂

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic Table

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

[RxN - Balanced] C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

[Given] 150 g O₂

Step 2: Identify Conversions

[RxN] 5 mol O₂ → 3 mol CO₂

[PT] Molar Mass of O - 16.00 g/mol

[PT] Molar Mass of C - 12.01 g/mol

Molar Mass of O₂ - 2(16.00) = 32.00 g/mol

Molar Mass of CO₂ - 12.01 + 2(16.00) = 44.01 g/mol

Step 3: Stoich

[DA] Set up:                                                                                                     [tex]\displaystyle 150 \ g \ O_2(\frac{1 \ mol \ O_2}{32.00 \ g \ O_2})(\frac{3 \ mol \ CO_2}{5 \ mol \ O_2})(\frac{44.01 \ g \ CO_2}{1 \ mol \ CO_2})[/tex][DA] Multiply/Divide [Cancel out units]:                                                         [tex]\displaystyle 123.778 \ g \ CO_2[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

123.778 g CO₂ ≈ 120 g CO₂

Describe what causes the airbag to inflate on the particle level

Answers

Answer:

The chemical at the heart of the air bag reaction is called sodium azide, or NaN3. CRASHES trip sensors in cars that send an electric signal to an ignitor. The heat generated causes sodium azide to decompose into sodium metal and nitrogen gas, which inflates the car's air bags

Explanation:

The chemical at the heart of the hair bag

How many molecules in 4C6H12OH

Answers

Answer: 80

Explanation:

12+6+1+1=20

20x4=80

Which would have the greatest evaporation: pure water or salt water?

Answers

Answer:

Pure Water.

Explanation:

Pure water evaporates faster than salt water.

What is the purpose of the periodic table?

Answers

Answer:

the periodic table is important because it is organized to provide a alot of information about elements and how they relate to one another in one easy-to-use reference. The table can be used to predict the properties of elements, even those that have not yet been discovered.

Explanation:


Cyanobacteria use the process of
to produce energy, and oxygen is given off as a waste product.

Answers

Answer:

Photosynthesis utilizes water as an electron donor in cyanobacteria in general and creates oxygen as a by-product, although some can even use hydrogen sulfide, a process that occurs among other photosynthetic bacteria, such as purple sulfur bacteria. Carbon dioxide is reduced via the Calvin cycle to form carbohydrates.

How many moles of oxygen are in 2.00 moles of NaCIO4?​

Answers

Answer: 8 Moles of Oxygen

Explanation: The formula shows that there are (exactly) 4 oxygen atoms in each mole or formula unit. Therefore 4 * 2.00 = 8.

Boron carbonate decomposes into boron oxide and carbon dioxide, how many moles of carbon dioxide are produced when 5.0 mol of boron carbonate decomposes completely?

Answers

Hope this is clear! Have a nice day.

Does the following compound contain a polyatomic ion? LiC2H3O2
Yes
No

Answers

Answer:

yes

Explanation:

the polyatomic ion is acetate, C2H3O2

List the three must haves of a hypothesis

Answers

Answer:

1. definition of a problem

2.solution to the problem

3.the result

Explanation:

Hope this helps

The three (3) must haves of a hypothesis include the following;

A hypothesis must be tested and falsifiable.A hypothesis must be supported by an observation and results of control experiments.A hypothesis must proffer a solution to a problem.

A hypothesis can be defined as a testable explanation for an  observation or a scientific problem. Thus, a hypothesis is a type of statement that is typically considered to be either tentative or an educated guess.

An example of a hypothesis is saying;

Corona virus is caused by the introduction of the "5G" technology.

Generally, the three (3) must haves of a hypothesis include the following;

1. A hypothesis must be tested and falsifiable.

2. A hypothesis must be supported by an observation and results of control experiments.

3. A hypothesis must proffer a solution to a problem.

Find more information: https://brainly.com/question/21053600

which model of the atom is most accurate?

Answers

Answer:

it's the electron cloud model

4) What is the Formula weight of MgCl2 and the explanation.

Answers

Answer:

95.21 g/mol

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic TableExplanation:

Step 1: Identify

MgCl₂

Step 2: Find Formula Weight

[PT] Molar Mass of Mg - 24.31 g/mol

[PT] Molar Mass of Cl - 35.45 g/mol

Molar Mass of MgCl₂ - 24.31 + 2(35.45) = 95.21 g/mol

Cell organizations^ pls help

Answers

Cell > tissue > organ > organ system > whole organism

Answer:

Multicellular organisms have cells that are organized in specific ways to perform specialized functions. From the most complex level to the simplest level, the five levels of organization for the sheep should be ordered as:

whole organism → organ system → organ → tissue→ cell

Explanation:

What is the percent composition of the element hydrogen in the compound methane CH4

Answers

Answer:

The answer is 25.14 percent. Hope this helps.

Precautions to take during electroplating

Answers

Answer:

Always be scared of electroplating. ...

Follow all electrical safety precautions. ...

Use all safety Precautions. ...

Use that Fume Hood. ...

It's a chemistry lab, set it up like one. ...

Always add acid to water. ...

Don't overheat your solutions! ...

Don't mix acid and cyanide solutions.

When an electron in an atom moves from high to low
energy levels:
a alpha particles are emitted
b gamma rays are emitted
c energy is emitted as electromagnetic radiation
d energy is absorbed

Answers

Answer:energy is emitted as electromagnetic radiy

Explanation:

How many orbitals are for p shapes

Answers

Answer:

3

Explanation:

From the table below we see that we can have three possible orbitals when l = 1. These are designated as p orbitals and have a sort of 8 shapes. Each of the p orbitals has a different orientation in three-dimensional space.

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