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
umka21 [38]
4 years ago
9

How many neutrons does element X have if it's atomic number is 157

Biology
1 answer:
finlep [7]4 years ago
3 0
101 Neutrons

The number of neutrons in element X may be calculated by subtracting the number of protons ( 56 ) from the mass number ( 157 ).

157 - 56 = 101
You might be interested in
AQUATICS SCIENCE I need help
sveticcg [70]

Answer:

into the cell from the solution causing it to expand

Explanation:

When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell. Diagram of red blood cells in hypertonic solution (shriveled), isotonic solution (normal), and hypotonic solution (puffed up and bursting).

6 0
3 years ago
Jason wanted to find out how he could increase the number of popcorn kernels that pop when cooked. He hypothesized that more ker
Ghella [55]

Answer:

This question is incomplete, it is asking to identify the following variables in the question:

Independent Variable: DIFFERENT AMOUNTS OF OIL

Dependent Variables: NUMBER OF KERNELS THAT POPPED

Controlled Variables: TIME FOR POPPING, SAME BRAND OF KERNEL, SAME COOKING TIME

Explanation:

The independent variable of an experiment refers to the variable that the experimenter intentionally manipulates or changes for the purpose of effecting a measurable response in another variable (dependent variable). In this experiment, the independent variable is DIFFERENT AMOUNTS OF OIL used because this is what Jason changes in the experiment.

Contrarily, the dependent variable is the variable that the experimenter measures in response to the independent variable. In this experiment, Jason measures the NUMBER OF KERNELS THAT POPPED from using different amounts of oil. Hence, the NUMBER OF KERNELS THAT POPPED is the dependent variable.

Controlled variables or constants are those variables that must be kept constant or unchanged throughout the experiment in order not to influence the findings of the experiment. In this case, the following variables were kept constant for all the groups: TIME FOR POPPING , SAME BRAND OF KERNEL (Pop rite), SAME COOKING TIME (4 mins).

7 0
3 years ago
Joanne is a 60-year-old patient with an LDL of 132 and a family history of coronary artery disease. She has already tried diet c
sergeinik [125]

Answer:

The correct answer is option A. "A statin".

Explanation:

Statins a type of drug that are prescribed to treat people that are at high risk of developing a cardiovascular disease. Since Joanne is a person with history of coronary artery disease and her LDL levels remained high after trying diet changes, the next step in her treatment will be to take a statin drug. It has been proved that statin are among the most effective drug at lowering LDL levels, therefore, a treatment with a statin will be effective for Joanne's condition.

7 0
4 years ago
When growing in windy environments, this organism will grow low along the ground, but when growing in sheltered environments, it
Aleks04 [339]
This organism is a coyote brush or the Baccharis pililaris. It is a shrub that is a family of daisy. They are mostly found in California, Washington and Oregon. This plant takes a different shape depending on the environment where it is found. It grows in a chaparral biome where there is little biodiversity and a habitat of only few species.
4 0
3 years ago
Read 2 more answers
What will happen to the food web if all primary consumers became extinct?
kap26 [50]
The producers would grow more food to be eaten but the secondary/tertiary etc consumers would have nothing to eat and so numbers would drop on that side
4 0
4 years ago
Other questions:
  • List at least five examples of a chemical change
    5·2 answers
  • 20. Name a structure that is located toward the dorsal side of the body, lateral and superior to the hamstring but inferior to t
    11·1 answer
  • A DNA double helix has 200 bases and 60 of them are adenine. This double helix will have___ thymine and_____ guanine.
    9·1 answer
  • What species is Cat?
    10·1 answer
  • Upon which does the amount of gravitational pull between two bodies depend? A. the speed by which they travel B. the angle of th
    13·1 answer
  • Genetic codes contain _____. random data nonfunctional chance information complex information detailed instructions accidental c
    9·1 answer
  • What role do bacteria play in the nitrogen cycle?
    14·2 answers
  • What enzyme joins Okazaki fragments?
    6·1 answer
  • What is the main aim of the study of systematics?
    11·1 answer
  • Use the scenario to answer the question. A student has a balloon filled with hydrogen gas. While wearing safety gear, they hold
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!