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3 years ago

What are 2 difference forms of a single gene called

Chemistry

1 answer:

zlopas [31]3 years ago

8 0

An organism which has two different alleles of the gene is called Heterozygous.

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Which has a triangular fiber? Wool Silk Cotton Nylon

julsineya [31]

The answer for this question is
Nylon

8 0

3 years ago

A 10.0g sample of H2O(l) at 23.0degrees C absorbs 209 joules of heat. What is the final temp of the H2O(l) sample? Explain.

IRISSAK [1]

Answer:

Final temperature = 28.0 degrees C.

Explanation:

heat absorbed = mass * specific heat * rise in temperature.

The specific heat of water is 4.186 J /g/C so we have the equation

209 = 10 * 4.186 * x where x is the temperature increase

41.86x = 209

= 5 degrees C.

7 0

3 years ago

3. Students were measuring distances and found one to be 2.04 m. When they asked the teacher if their measurement was correct, t

Vlada [557]

Answer:

5.56

Explanation:

4 0

3 years ago

A 25.0 mL sample of a solution of a monoprotic acid is titrated with a 0.115 M NaOH solution. The end point was obtained at abou

kati45 [8]

Answer:

The concentration of the acid is about 0.114 M (option E)

Explanation:

Step 1: Data given

Volume of the monoprotic acid = 25.0 mL = 0.025 L

Molarity of the monoprotic acid = ?

Molarity of the NaOH solution = 0.115 M

Volume NaOH = 24.8 mL = 0.0248 L

Step 2: Calculate the concentration

a*Cb * Vb = b * Ca * Va

⇒ a = the coeficient of NaOH = 1

⇒ Cb = the molarity of the acid = TO BE DETERMINED

⇒ Vb = the volume of the acid = 0.025 L

⇒ b = the coefficient of the acid = monoprotic = 1

⇒ Ca = the moalrity of NaOH = 0.115 M

⇒ Va = the volume of NaOH = 0.0248 L

1 * Cb * 0.025 = 1 * 0.115 * 0.0248

0.025 Cb = 0.002852

Cb = 0.11408 M

The concentration of the acid is about 0.114 M

5 0

4 years ago

A liquid in lab has a density of 1.24g/cm3. What is the mass in grams of 254mL of the liquid?

o-na [289]

Answer:

Mass= 314.96 grams

Explanation:

The density of the substance is defined as mass per unit volume of it.

The formula is :

$density=\frac{mass}{Volume}$

Unit conversion:

1 liter = 1000 ml

$1dm^{3}=1Liter$

$1dm^{3}=1000ml$ ....(1)

$1dm^{3} = (10cm)^{3}$

$1dm^{3}=1000cm^{3}$

Replace The dm3 by cm3 in (1)

$1000cm^{3}=1000mL$

$1cm^{3}=1mL$

Volume = 254 mL = 254 cm3

Calculation of mass

$density=\frac{mass}{Volume}$

$1.24=\frac{mass}{254cm^{3}}$

$mass=1.24\times 254$

Mass= 314.96 grams(or 315 grams)

Note: Always makes same units before solving the question. You can not determine the mass if Volume is in mL and Density is in g/cm3. Change mL into cm3 first

8 0

3 years ago