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
skad [1K]
3 years ago
11

I really need help ! This is science

Chemistry
2 answers:
lina2011 [118]3 years ago
7 0

Answer:

7. genetics because hereditary is not the study of hereditary.

8. is hereditary because it is the study of how things pass on to next generation what is inherited.

snow_tiger [21]3 years ago
6 0

Answer: Genetics

Explanation:

You might be interested in
A student sees an absorbance a=1.140 for his solution that has a concentration of c=1.50*10-4 m using 0.50 cm cuvette. what is t
777dan777 [17]

The molar extinction coefficient is 15,200 M^{-1} cm^{-1}.

The formula to be used to calculate molar extinction coefficient is -

A = ξcl, where A represents absorption, ξ refers molar extinction coefficient, c refers to concentration and l represents length.

The given values are in required units, hence, there is no need to convert them. Directly keeping the values in formula to find the value of molar extinction coefficient.

Rewriting the formula as per molar extinction coefficient -

ξ = \frac{A}{cl}

ξ = \frac{1.140}{1.5*10^{-4}*0.5 }

Performing multiplication in denominator to find the value of molar extinction coefficient

ξ = \frac{1.140}{0.000075}  

Performing division to find the value of molar extinction coefficient

ξ = 15,200 M^{-1} cm^{-1}

Hence, the molar extinction coefficient is  15,200 M^{-1} cm^{-1}.

Learn more about molar extinction coefficient -

brainly.com/question/14744039

#SPJ4

6 0
1 year ago
What does heat mean in chemistry
Tpy6a [65]

Answer:

Heat is the transfer of energy that results from the difference in temperature between a system and its surroundings. At a molecular level, heat is the transfer of energy that makes use of or stimulates disorderly molecular motion in the surroundings.

Explanation:

8 0
3 years ago
A sample of CaCO3 (molar mass 100. g) was reported as being 30. percent Ca. Assuming no calcium was present in any impurities, c
natka813 [3]

Answer:

Approximately 75%.

Explanation:

Look up the relative atomic mass of Ca on a modern periodic table:

  • Ca: 40.078.

There are one mole of Ca atoms in each mole of CaCO₃ formula unit.

  • The mass of one mole of CaCO₃ is the same as the molar mass of this compound: \rm 100\; g.
  • The mass of one mole of Ca atoms is (numerically) the same as the relative atomic mass of this element: \rm 40.078\; g.

Calculate the mass ratio of Ca in a pure sample of CaCO₃:

\displaystyle \frac{m(\mathrm{Ca})}{m\left(\mathrm{CaCO_3}\right)} = \frac{40.078}{100} \approx \frac{2}{5}.

Let the mass of the sample be 100 g. This sample of CaCO₃ contains 30% Ca by mass. In that 100 grams of this sample, there would be \rm 30 \% \times 100\; g = 30\; g of Ca atoms. Assuming that the impurity does not contain any Ca. In other words, all these Ca atoms belong to CaCO₃. Apply the ratio \displaystyle \frac{m(\mathrm{Ca})}{m\left(\mathrm{CaCO_3}\right)} \approx \frac{2}{5}:

\begin{aligned} m\left(\mathrm{CaCO_3}\right) &= m(\mathrm{Ca})\left/\frac{m(\mathrm{Ca})}{m\left(\mathrm{CaCO_3}\right)}\right. \cr &\approx 30\; \rm g \left/ \frac{2}{5}\right. \cr &= 75\; \rm g \end{aligned}.

In other words, by these assumptions, 100 grams of this sample would contain 75 grams of CaCO₃. The percentage mass of CaCO₃ in this sample would thus be equal to:

\displaystyle 100\%\times \frac{m\left(\mathrm{CaCO_3}\right)}{m(\text{sample})} = \frac{75}{100} = 75\%.

3 0
3 years ago
What happens when a atom losses 2 electrons
Anna [14]
I think it becomes an Ion. If i'm not mistaking.

8 0
3 years ago
How would a solution that is labeled 5.0 M would be read as?
cestrela7 [59]
The M stands for molar, so it would be 5.0 molar. is that what you need?
7 0
3 years ago
Other questions:
  • Objects with higher temperatures:________________.1. emit only shortwave radiation. 2. emit most of their energy in the form of
    9·1 answer
  • What number of moles of O2 will be produced by the decomposition of 4.4 moles of water?
    6·1 answer
  • Why do people remove entire forests ?
    14·1 answer
  • What is the maximum number of electrons that can occupy the d sublevel?
    6·2 answers
  • What three human body systems coordinate cause an arm to move
    10·1 answer
  • Balancea las siguientes ecuaciones por el método de redox. Determina el
    8·1 answer
  • Water has which of the following IMFs present between molecules?
    8·1 answer
  • The Sun is the key driving force of weather and climate. Which of the following is true regarding how weather and climate compar
    12·2 answers
  • Suzy uses an italian salad dressing on her lunch. This ____________ mixture is a suspension of oil and vinegar. Question 19 opti
    8·1 answer
  • A 70.-kg person exposed to ⁹⁰Sr absorbs 6.0X10⁵ β⁻ particles, each with an energy of 8.74X10⁻¹⁴ J.(b) If the RBE is 1.0, how man
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!