Chemistry scavenger hunt-Can you figure it out?

1. Period two group one is where I sit

2. The # of valence electrons in the previous answer plus 23 is my atomic number

3. Five groups to the right of the previous answer, in period five, is my location.

4. the # of neutral particles in the previous answer is my atomic #

5. if you reverse the atomic number of the previous answer, you will know my mass

Answer:

hello hope this helps :)

a pure substance consists only of one element or one compound. a mixture consists of two or more different substances, not chemically joined together.

Explanation:

Answer:

chlorine

Explanation:

maybe just look it up

Answer:

sodium chloride & chlorine

Explanation:

is a chemical element with the symbol CL And atomic number 17, the second lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them.

Answer: The average atomic mass of oxygen is 15.999 amu

Explanation:

Mass of isotope O-16 = 15.995 amu

% abundance of isotope O-16= 99.759 % = \(\frac{99.759}{100}=0.99759\)

Mass of isotope O-17 = 16.995 amu

% abundance of isotope O-17 = 0.037% = \(\frac{0.037}{100}=0.00037\)

Mass of isotope O-18 = 17.999 amu

% abundance of isotope O-18 = 0.204% = \(\frac{0.204}{100}=0.00204\)

Formula used for average atomic mass of an element :

\(\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})\)

\(A=\sum[(15.995\times 0.99759)+(16.995\times 0.00037)+(17.999 \times 0.00204)]\)

\(A=15.999\)

Thus the average atomic mass of oxygen is 15.999 amu

Answer:

Converting the percent abundance into decimal form, we get:

O-16: 99.759% = 99.759/100 = 0.9975

O-17: 0.037% = 0.037/100 = 0.00037

O-18: 0.204% = 0.204/100 = 0.0020

Average atomic mass of oxygen is:

(15.995) x (0.9975) + (16.995) x (0.00037) + (17.999) x (0.0020)

= 15.955 + 0.0062 + 0.0359

= 15.997 amu

Explanation:

From PLATO

Answer:

atoms of oxygen is present in 10H2SO4 ?

Explanation:

10 * 4 = 40

Answer:

Because the infrared lamp gives off a type of light that the desk lamp does not, and the mirror can only take in the energy from the infrared light.

Explanation:

Answer:

A.

Explanation:

In conclusion, an electrically neutral object is an object that has a balance of protons and electrons. In contrast, a charged object has an imbalance of protons and electrons. ... The type of charge(positive or negative) is determined by whether the protons or the electrons are in excess

Dear God, the person reading this is kind and I’m proud of them . Please help them live life to the fullest and bless her in their chosen field. Now, you’re on the clock.❤❤❤ In 9 minutes something will make you happy. Please share this with 15 people you love. Remember, . If I don’t get this back I’m obviously not a close friend. Now, I have a game for you, it’s been played since 1977. Once you read this, you have to send it to 15 people. Your next 5 days will be like this: Day 1 - you will wake up to the biggest shock of your life. Day 2 - you will cross paths with an old friend you have missed. Day 3 - you will find yourself with a lot of money. Day 4 - your day will be perfect. Day 5 - the person u like the most in your life will spend lots of time with you. If you don’t forward this, your next 5 days will be the exact

Answer:alkali metals group 1

Explanation:practice and get better

Answer:c

Explanation:

Answer:

Sedimentary rock

Explanation:

Rocks found at the beach and near land surface are usually sedimentary rocks such as shale, sandstone, limestone, breccia e.t.c.

Now,these rocks are formed from the porosity destruction through compaction & cementation process of unconsolidated sediments by calcium carbonate cements in the tidal zone occurring primarily in the tropical and subtropical beaches. Various crystalline forms of Aragonite and calcite, are the primary agents of hardening and bonding of clastic sediments by the precipitation of mineral matter formed in the pore spaces.

The rock Kelly found on the beach has been sedimentary rock. The rocks have been formed by the series of events including melting, erosion, weathering, and compacting.

The rocks are the hard piece of matter that has compact structure. Rock has been of there types, namely igneous, metamorphic and sedimentary rocks.

The rocks that has been found near the seashore has been sedimentary rock as they have been formed with the erosion and the compacting of erode with the weather conditions resulting in the rock.

The rocks have been formed with the process of melting, eroding, compacting, and deformation. The rocks form has been interchangeable.

Melting and cooling of the metamorphic rock results in the formation of the igneous rock. The igneous rock has been weathered and sediment to form the sedimentation rock. The effect of heat and pressure over sedimentation rock turns it into metamorphic rock.

The rock Kelly found on the beach has been sedimentary rock. The rocks have been formed by the series of events including melting, erosion, weathering, and compacting.

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Answer:

it would fall-

The volume the balloon will occupy at an altitude where the pressure is 0.600 atm and the temperature is -20.00 C is 6.15 L.

The ideal gas law can be used to solve the given problem, which is as follows:P1V1/T1 = P2V2/T2 Where:P1 is the initial pressure (1.00 atm)P2 is the final pressure (0.600 atm)V1 is the initial volume (4.50 L)V2 is the final volume (what we want to find)T1 is the initial temperature (20.00 C = 293.15 K)T2 is the final temperature (-20.00 C = 253.15 K)The problem does not provide the mass or number of moles of helium gas, but these quantities are not required to solve the problem as they cancel out in the calculation.The problem also does not mention any change in altitude, so we can assume that the balloon rises to an altitude where the pressure and temperature are lower.We can rearrange the equation above to solve for V2, which gives:V2 = (P1V1T2)/(P2T1) Substituting the given values gives:V2 = (1.00 atm × 4.50 L × 253.15 K)/(0.600 atm × 293.15 K)V2 = 6.15 L.

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Answer:

Two Negative Charges

Explanation:

C. Two negative charges

Given condition: An atom gains two electrons during the formation of a bond.

As we know gaining an electron results in a negative charge and here two electrons being gained.

Therefore, the charge on it after gaining two electrons will be two negative charges.

Thus, the correct option is option C.

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Answer:

Energy retained at consumer level 1 -  units

Energy retained at consumer level 2 -  units

Energy retained at consumer level 3 -  units

Explanation:

Answer:

d

Explanation:

yes

Answer:

their citrus clouds

Explanation:

I looked it up on the internet

Explanation:

An exothermic reaction is a chemical or physical reaction that releases heat. An endothermic reaction is a process or reaction that absorbs energy in the form of heat. So, the reaction in which heat is released make the temperature rise.... and the reaction in which heat is absorbed make the temperature fall.

Answer:

Kp = Kc (RT) ^(-2)

Explanation:

For the reaction;

N2 (g) + 3H2 ⇄ 2NH3(g)

We can write;

Kc = [NH3]^2/[N2] [H2]^3

But

Kp = pNH3^2/pN2 . PH2^3

To convert from Kc to Kp

Kp = Kc (RT) ^Δn

where Δn is the change in number of moles going from reactants

to products.

For this reaction;

Δn = 2- (3+1) = -2

Kp = Kc (RT) ^(-2)

Answer:

c

Explanation:

Answer:

Central atoms with four electron groups will be sp3 hybridized. True

Hybrid orbitals are delocalized over the entire molecule. False

The number of hybrid orbitals is equal to the number of atomic orbitals that are blended together. True

Atoms with a single pi bond and an octet are sp2 hybridized. True

Sometimes oxygen atoms will be sp3d hybridized in organic molecules. False

All resonance structures must be considered when assigning hybridization. False

Explanation:

When a central atom has four electron groups attached to it, then it must be sp3 hybridized. This is the case in ammonia, water, hydrogen sulphide, methane etc.

Hybridization is a valence bond concept while delocalization is a molecular orbital theory concept. Hybridized orbitals are localized on central atoms in a molecule while delocalized orbitals spread across the entire molecule.

According to valence bond theory, the number of atomic orbitals that combined to give hybrid orbitals must be equal to the number of hybrid orbitals formed.

When an atom has a single pi bond and on octet of electrons, then it must be sp2 hybridized. Remember that in ethene for instance, carbon has one pi bond and an octet of electrons.

Oxygen has an empty n=3 level hence it can not have d-orbitals involved in hybridization.

The electron domain geometry of the molecule is considered when assigning hybridization and not the resonance structures. All the resonance structures must have the central atom in the same hybridization state.

The atoms have been resulted in the formation of the covalent bond, by the sharing of the electrons. The sharing of electrons results in the hybrid atomic levels.

Thus, the given statement is True.

Thus, the given statement is False.

Thus, the given statement is True.

The atom with single pi electrons has fulfilled s orbital and 2 electron sin the p orbital by sharing of bond, Thus, the hybridization has been \(\rm sp^2\).

Thus, the given statement is True.

Thus, the given statement is False.

Thus, the given statement is False.

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The molecules that assists deoxyribonucleic acid (DNA) in its organization is the proteins. That is option A.

Deoxyribonucleic acid (DNA) is defined as the hereditary molecules in a living organism that stores instructions for making other large molecules which are inherited from the parent.

In the structure of the deoxyribonucleic acid, they are made made up of base pairs that are organised by proteins known as histones.

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Answer:

2 moles

In words, 1 mole of Mg reacts with 2 moles of HCl to form 1 mole of MgCl₂ and 1 mole of H₂. The molar ratio of HCl to MgCl₂ is 2:1.

Answer:

1.   C + O₂ → CO₂

2.  C + CO₂ → 2 CO

3. Fe₂O₃ + 3 CO → 2 Fe + 3 CO₂

At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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Answer:

A) Using the ideal gas law, we can calculate the number of moles of gas present:

```

PV = nRT

```

where:

* P = pressure (atm) = 1 atm

* V = volume (L) = 5.6 L

* n = number of moles of gas

* R = ideal gas constant = 0.08206 L atm / mol K

* T = temperature (K) = 273.15 K

Solving for n, we get:

```

n = (P * V) / RT

```

```

n = (1 atm * 5.6 L) / (0.08206 L atm / mol K * 273.15 K)

```

```

n = 0.25 mol

```

Therefore, there are 0.25 moles of gas present.

B) The molar mass of the gas can be calculated by dividing the mass of the gas (8.0 g) by the number of moles of gas (0.25 mol):

```

Molar mass = Mass / n

```

```

Molar mass = 8.0 g / 0.25 mol

```

```

Molar mass = 32 g/mol

```

The molar mass of the gas is 32 g/mol.

C) The common atmospheric gas with a molar mass of 32 g/mol is oxygen (O2). Therefore, the gas that was collected is oxygen.

Explanation:

Answer:

Use 62% - the equation is for the amount present at a given time. 0.62 = (1) e-kt -> ln(0.62)=-kt -> k = -ln(0.62)/t. I get k = .00117 hr-1 t(half) = 0.693/k = 590 hr.

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The half-life is the time at which the substance's concentration is reduced by half of its initial amount. The half-life of a nuclide that lost its 38.0% mass is 590 hr. Thus, option C is correct.

Half-life is the time required by a substance to get reduced to half of its initial concentration. The half-life of the substance can be determined by the rate constant.

Given,

The initial quantity of substance (A₀) = 100

Remaining quantity (At) = 10 - 38 = 62

Time elapse (t) = 407 hours

The rate constant (k) is calculated as:

ln (At ÷ A₀) = - kt

ln (62 ÷ 100) ÷ 407 hour = - k

-0.47803580094 ÷ 407 = - k

k = 0.00117453513

Now, half-life from rate constant (k) is calculated as:

\(\rm t ^{\frac{1}{2}}\) = 0.693 ÷ k

\(\rm t ^{\frac{1}{2}}\) = 0.693 ÷ 0.00117453513

\(\rm t ^{\frac{1}{2}}\) = 590 hours

Therefore, option C. 590 hours is the half-life of the substance.

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The grams of iburofen does such a tablet contain 800 mg =   0.8g Ibuprofen

1 g = 10^-3g = .001g

Ibuprofen has  800 mg doses in over-the-counter analgesic

800g = 800 × .001

        = 0.8g

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A compound consisting of Ba2+ and Cl- :

We have to cross multiply the ionic charges:

Therefore the compound will be: