1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Katen [24]
2 years ago
13

To calculate the percentage of people who have a particular allele population studies are conducted to collect data.true or fals

e
Chemistry
1 answer:
kondaur [170]2 years ago
6 0
I think is is going to be truth because
You might be interested in
A copper wire is made of copper (Cu) atoms. Which of the following best describes the copper atoms?
Evgesh-ka [11]

Answer: Option (A) is the correct answer.

Explanation:

An element is defined as a substance that contains atoms of same type.

As copper wire is a substance that is made up of only atoms of copper. And, all these atoms of copper will be the same. Hence, it is an element.

This means that all the atoms of copper will have same number of protons, neutrons and electrons.

Thus, we can conclude that the statement they are all exactly the same best describes the copper atoms.

3 0
3 years ago
Read 2 more answers
Help pleaseeeeeeeee just need 4 answers
larisa86 [58]

Answer:

Here, acceleration due to gravity(a) is assumed as 10m/s².We can also take it as 9.8m/s²

Explanation:Brick) Weight=m * a=1 * 10=10N\\Bag of books) Mass=f/a=25/10=2.5kg\\Bag of potatoes) Weight=m * a=10 * 10=100N\\Bag of cement) Mass=f/a=400/10=40kg

8 0
2 years ago
How much heat in j is giving out when 85.0g of lead cools from 200.0 c to 10.0c
photoshop1234 [79]

Answer:

q = - 2067.2 J of Heat is giving out when 85.0g of lead cools from 200.0 c to 10.0 c.

Explanation:

The Specific Heat capacity of Lead is 0.128 \frac{J}{g\ ^{0}C}

This means, increase in temperature of 1 gm of lead by 1 ^{0}\ C will require 0.128 J of heat.

Formula Used :

q = m.c.\Delta T

q = amount of heat added / removed

m = mass of substance in grams = 85.0 g

c = specific heat of the substance = 0.128

q = m.c.\Delta T = Change in temperature

                                          = final temperature - Initial temperature

                                          = 10 - 200

                                          = -190 ^{0}\ C

put value in formula

q = -  85\times 0.128\times 190

On calculation,

q = - 2067.2 J

- sign indicates that the heat is released in the process

5 0
3 years ago
How many moles of helium are needed to fill a balloon to a volume of 5.3 L at 22 ℃ and 632 mmHg?
son4ous [18]

Answer:

0.18 moles

Explanation:

Applying,

PV = nRT................... Equation 1

Where P = pressure, V = volume, n = number of moles, R = molar gas constant, T = temperature.

make n the subject of the equation

n = PV/RT............... Equation 2

Given: V = 5.3 L, T = 22 °C = (22+272) K = 295 K, P = 632 mmHg = (0.00131579×632) = 0.8316 atm,  R = 0.083 L.atm/K.mol

Substitute these values into equation 2

n = (0.8316×5.3)/(0.083×295)

n = 0.18 moles

6 0
3 years ago
When the pH of an aqueous solution is 8, what is the OH- ion concentration in moles per liter?
Lilit [14]

Answer:

D. 12 is 1 × 10-6

Explanation:

8 0
3 years ago
Other questions:
  • How many molecules are in a 189 g sample of carbon tetrabromide, CBr4 ?
    5·1 answer
  • The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its co
    14·1 answer
  • Do all metal produce electromagnetic radiation when they are heated in a flame
    5·1 answer
  • Nylon 6,6 may be formed by means of a condensation polymerization reaction in which hexamethylene diamine [NH2-(CH2)6-NH2] and a
    13·1 answer
  • 1. Using a triple beam balance and a graduated cylinder, a student collected data on a sample of an
    11·1 answer
  • William adds two values, following the rules for using significant figures in computations. He should write the sum of these two
    12·2 answers
  • The Question is attached :(
    10·1 answer
  • The primary structure of a protein determines its secondary and tertiary structures. arrange these steps in the folding of a glo
    15·1 answer
  • In a polar reaction mechanism, the atom that gives away electrons in a neutral nucleophile will end up as a(n):
    7·1 answer
  • How do chemists model the valence electrons of metal atoms
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!