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3 years ago

Four properties of water are listed.

Chemistry

1 answer:

vichka [17]3 years ago

6 0

Explanation:

Physical property

1- Water is colorless and odorless in its pure form

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Which statement is true about your mass?

ziro4ka [17]

the answer isn't A, it is D, You would have the same mass on the Earth and moon

8 0

3 years ago

4. What are the possible genotypes of the pes plant?

shtirl [24]

PPRR, PpRR, PPRr, and PpRr

8 0

3 years ago

Given the equation representing a reaction: H2 O2 --> H2O . What is the total mass of water formed when 8 grams of hydrogen r

Brrunno [24]

2 H₂ + O₂ = 2 H₂O

4 g H₂ ------------ 32 g O₂----------- 36 g H₂O
 8 g H₂ ------------ 64 g O₂------------ ? g H₂O

Mass of H₂O :

64 * 36 / 32 =

2304 / 32 = 72 g of H₂O

hope this helps!

5 0

4 years ago

The empirical formula of a compound is CH. At 200 degree C, 0.145 g of this compound occupies 97.2 mL at a pressure of 0.74 atm.

Vladimir [108]

Answer:

The molecular formula = $C_{6}H_{6}$

Explanation:

Given that:

Mass of compound, m = 0.145 g

Temperature = 200 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15

So,

T = (200 + 273.15) K = 473.15 K

V = 97.2 mL = 0.0972 L

Pressure = 0.74 atm

Considering,

$n=\frac{m}{M}$

Using ideal gas equation as:

$PV=\frac{m}{M}RT$

where,

P is the pressure

V is the volume

m is the mass of the gas

M is the molar mass of the gas

T is the temperature

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the values in the above equation as:-

$0.74\times 0.0972=\frac{0.145}{M}\times 0.0821\times 473.15$

$M=78.31\ g/mol$

The empirical formula is = $CH$

Molecular formulas is the actual number of atoms of each element in the compound while empirical formulas is the simplest or reduced ratio of the elements in the compound.

Thus,

Molecular mass = n × Empirical mass

Where, n is any positive number from 1, 2, 3...

Mass from the Empirical formula = 12 + 1 = 13 g/mol

Molar mass = 78.31 g/mol

So,

Molecular mass = n × Empirical mass

78.31 = n × 13

⇒ n ≅ 6

The molecular formula = $C_{6}H_{6}$

6 0

3 years ago

The distance between two bonded atoms (the bond length), is usually in units of picometers, where 1.00 m = 1.00 x 1012 pm (or 1.

8090 [49]

Answer:

7.52 × 10⁻¹⁴ mi

Explanation:

Step 1: Given data

Bond length between two carbon atoms (l): 121 pm

Step 2: Convert "l" to meters

We will use the conversion factor 1.00 m = 1.00 × 10¹² pm.

121 pm × (1.00 m / 1.00 × 10¹² pm) = 1.21 × 10⁻¹⁰ m

Step 3: Convert "l" to miles

We will use the conversion factor 1.00 mi = 1609.34 m.

1.21 × 10⁻¹⁰ m × (1.00 mi / 1609.34 m) = 7.52 × 10⁻¹⁴ mi

4 0

4 years ago